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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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Ever felt stupid ... ?
I had a Hartke combo on the bench today. Owner is a keyboard player, and
reckons that he blows the tweeter fuse regularly, and as a result, the fuseholder was getting slack and intermittent, so could I put a new one in, please. He normally gains access to the crossover board to replace the fuse, by taking out the right hand side handle insert, but the captive nuts were getting to be a poor grip in the wood, so I decided the easiest alternative way to do the job, obtaining good access to the board, was to remove the speaker. The grill is held by ten quite large wood screws, and the speaker by eight large machine screws, into more captive nuts. I didn't unsolder the bass driver. Just left it on the bench at the end of its wires. It didn't take long to fit a new fuseholder, and screw the board back in. I dropped the speaker back into its hole, and then went to have some lunch. When I came back, I started to look for the screws to reassemble the thing, and they were gone .... Now the bench is pretty tidy at the moment, so there's no reason that they shouldn't have been easily visible, but they weren't. I spent the next half hour turning the air blue, and accusing everyone from the missus to next door's cat, of hiding or stealing the screws. I crawled through all the normal detritus and solder splats under every bench, but nothing. Eventually, I decided that I must have had a senior moment, and tidied them into a film pot (I always put screws from items waiting for parts, into film pots), and put it inside the cabinet. And then forgotten that I did, so excited was I at the prospect of my toasted cheese sandwiches for lunch. So I lifted the speaker back out and felt around in the wadding, but no, nothing. Then the phone rang, so I laid the speaker back down on the bench and yes - you've guessed it - 18 bloody great screws stuck to the magnet ... DOH ! d:~\ Arfa |
#2
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Ever felt stupid ... ?
"Arfa Daily" wrote in
: I had a Hartke combo on the bench today. Owner is a keyboard player, and reckons that he blows the tweeter fuse regularly, and as a result, the fuseholder was getting slack and intermittent, so could I put a new one in, please. He normally gains access to the crossover board to replace the fuse, by taking out the right hand side handle insert, but the captive nuts were getting to be a poor grip in the wood, so I decided the easiest alternative way to do the job, obtaining good access to the board, was to remove the speaker. The grill is held by ten quite large wood screws, and the speaker by eight large machine screws, into more captive nuts. I didn't unsolder the bass driver. Just left it on the bench at the end of its wires. It didn't take long to fit a new fuseholder, and screw the board back in. I dropped the speaker back into its hole, and then went to have some lunch. When I came back, I started to look for the screws to reassemble the thing, and they were gone .... Now the bench is pretty tidy at the moment, so there's no reason that they shouldn't have been easily visible, but they weren't. I spent the next half hour turning the air blue, and accusing everyone from the missus to next door's cat, of hiding or stealing the screws. I crawled through all the normal detritus and solder splats under every bench, but nothing. Eventually, I decided that I must have had a senior moment, and tidied them into a film pot (I always put screws from items waiting for parts, into film pots), and put it inside the cabinet. And then forgotten that I did, so excited was I at the prospect of my toasted cheese sandwiches for lunch. So I lifted the speaker back out and felt around in the wadding, but no, nothing. Then the phone rang, so I laid the speaker back down on the bench and yes - you've guessed it - 18 bloody great screws stuck to the magnet ... DOH ! d:~\ Arfa that's not too bad. at least they were not embedded in the speaker cone. -- Jim Yanik jyanik at localnet dot com |
#3
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Ever felt stupid ... ?
On 9/15/2011 8:33 AM, Arfa Daily wrote:
18 bloody great screws stuck to the magnet ... DOH ! d:~\ Thank you for not making ME feel completely stupid. Jeff -- "Everything from Crackers to Coffins" |
#4
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Ever felt stupid ... ?
Arfa Daily wrote in message
... I had a Hartke combo on the bench today. Owner is a keyboard player, and reckons that he blows the tweeter fuse regularly, and as a result, the fuseholder was getting slack and intermittent, so could I put a new one in, please. He normally gains access to the crossover board to replace the fuse, by taking out the right hand side handle insert, but the captive nuts were getting to be a poor grip in the wood, so I decided the easiest alternative way to do the job, obtaining good access to the board, was to remove the speaker. The grill is held by ten quite large wood screws, and the speaker by eight large machine screws, into more captive nuts. I didn't unsolder the bass driver. Just left it on the bench at the end of its wires. It didn't take long to fit a new fuseholder, and screw the board back in. I dropped the speaker back into its hole, and then went to have some lunch. When I came back, I started to look for the screws to reassemble the thing, and they were gone .... Now the bench is pretty tidy at the moment, so there's no reason that they shouldn't have been easily visible, but they weren't. I spent the next half hour turning the air blue, and accusing everyone from the missus to next door's cat, of hiding or stealing the screws. I crawled through all the normal detritus and solder splats under every bench, but nothing. Eventually, I decided that I must have had a senior moment, and tidied them into a film pot (I always put screws from items waiting for parts, into film pots), and put it inside the cabinet. And then forgotten that I did, so excited was I at the prospect of my toasted cheese sandwiches for lunch. So I lifted the speaker back out and felt around in the wadding, but no, nothing. Then the phone rang, so I laid the speaker back down on the bench and yes - you've guessed it - 18 bloody great screws stuck to the magnet ... DOH ! d:~\ Arfa So did you put a lamp in there along with the fuse? |
#5
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Ever felt stupid ... ?
"N_Cook" wrote in message ... Arfa Daily wrote in message ... I had a Hartke combo on the bench today. Owner is a keyboard player, and reckons that he blows the tweeter fuse regularly, and as a result, the fuseholder was getting slack and intermittent, so could I put a new one in, please. He normally gains access to the crossover board to replace the fuse, by taking out the right hand side handle insert, but the captive nuts were getting to be a poor grip in the wood, so I decided the easiest alternative way to do the job, obtaining good access to the board, was to remove the speaker. The grill is held by ten quite large wood screws, and the speaker by eight large machine screws, into more captive nuts. I didn't unsolder the bass driver. Just left it on the bench at the end of its wires. It didn't take long to fit a new fuseholder, and screw the board back in. I dropped the speaker back into its hole, and then went to have some lunch. When I came back, I started to look for the screws to reassemble the thing, and they were gone .... Now the bench is pretty tidy at the moment, so there's no reason that they shouldn't have been easily visible, but they weren't. I spent the next half hour turning the air blue, and accusing everyone from the missus to next door's cat, of hiding or stealing the screws. I crawled through all the normal detritus and solder splats under every bench, but nothing. Eventually, I decided that I must have had a senior moment, and tidied them into a film pot (I always put screws from items waiting for parts, into film pots), and put it inside the cabinet. And then forgotten that I did, so excited was I at the prospect of my toasted cheese sandwiches for lunch. So I lifted the speaker back out and felt around in the wadding, but no, nothing. Then the phone rang, so I laid the speaker back down on the bench and yes - you've guessed it - 18 bloody great screws stuck to the magnet ... DOH ! d:~\ Arfa So did you put a lamp in there along with the fuse? There already is a festoon bulb, as you often find, and it lights up jolly nicely when you give it a good thrashing. There was no indication on the board what value or type the fuse should be. There was a 1.6A fitted. The owner is not a 'dumb' user, so I'm guessing that the first time he replaced it, it was a 1.6A that came out. Seems about the right sort of value to me for a horn. The only thing that I would say, is that the fuse that was fitted, had no fusing characteristic markings, and looked like a 'straight' type - but I accept that it can sometimes be hard to tell just from appearance. It had failed 'cleanly', so may well have been just repeated stress. I have replaced it now with a 'T' rated type of different construction, so I guess we'll see ... Arfa |
#6
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Ever felt stupid ... ?
On Thu, 15 Sep 2011 14:33:57 +0100, "Arfa Daily"
wrote: ...so I laid the speaker back down on the bench and yes - you've guessed it - 18 bloody great screws stuck to the magnet ... DOH ! d:~\ Arfa Chuckle. Now, I don't feel so bad. I use plastic yogurt "tubs" to store screws. If the unit is going to sit around for more than a day, I transfer the contents to plastic zip-loc bags. My favorite idiot error is to knock over the tub, scattering hardware everywhere. Things I learned a few days ago, while refilling laser printer toner cartridges. - Do not try to fill a laser toner cartridge outside in the wind. - Do not overfill the toner cartridge. - Always empty the "waste" toner BEFORE refilling. - Do not drop the toner bottle on the carpet. - Do not vacuum toner with a non-HEPA filter bag. - Do not empty trash can, full of loose toner, into the dumpster, in the wind. - Having a spare change of clothes in the office is very handy. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#7
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Ever felt stupid ... ?
Jeffrey Angus wrote:
On 9/15/2011 8:33 AM, Arfa Daily wrote: 18 bloody great screws stuck to the magnet ... DOH ! d:~\ Thank you for not making ME feel completely stupid. Jeff Why do a partial job Jamie |
#8
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Ever felt stupid ... ?
On 9/15/2011 10:12 AM, Jeff Liebermann wrote:
Things I learned a few days ago, while refilling laser printer toner cartridges. And cold water is your friend, HOT water really just makes it worse. Jeff-1.0 -- "Everything from Crackers to Coffins" |
#9
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Ever felt stupid ... ?
Arfa Daily wrote in message
... There already is a festoon bulb, as you often find, and it lights up jolly nicely when you give it a good thrashing. There was no indication on the board what value or type the fuse should be. There was a 1.6A fitted. The owner is not a 'dumb' user, so I'm guessing that the first time he replaced it, it was a 1.6A that came out. Seems about the right sort of value to me for a horn. The only thing that I would say, is that the fuse that was fitted, had no fusing characteristic markings, and looked like a 'straight' type - but I accept that it can sometimes be hard to tell just from appearance. It had failed 'cleanly', so may well have been just repeated stress. I have replaced it now with a 'T' rated type of different construction, so I guess we'll see ... Arfa Partial shorted turns on the VC ? |
#10
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Ever felt stupid ... ?
Jeff Liebermann wrote:
I use plastic yogurt "tubs" to store screws.[...] My favorite idiot error is to knock over the tub, scattering hardware everywhere. Glue each of those to a base that is broader than the tub. A piece of 1 x 4 would do. |
#11
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Ever felt stupid ... ?
On 9/15/2011 1:11 PM, JeffM wrote:
Jeff Liebermann wrote: I use plastic yogurt "tubs" to store screws.[...] My favorite idiot error is to knock over the tub, scattering hardware everywhere. Glue each of those to a base that is broader than the tub. A piece of 1 x 4 would do. Right, then I can knock them ALL over at the same time. Jeff (The other other one) -- "Everything from Crackers to Coffins" |
#12
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Ever felt stupid ... ?
On Thu, 15 Sep 2011 11:11:54 -0700 (PDT), JeffM
wrote: Jeff Liebermann wrote: I use plastic yogurt "tubs" to store screws.[...] My favorite idiot error is to knock over the tub, scattering hardware everywhere. Glue each of those to a base that is broader than the tub. A piece of 1 x 4 would do. Won't work for me. There's no room on the workbench to put anything that big. http://802.11junk.com/jeffl/pics/home/slides/BL-shop6.html The plastic tubs work well enough when all that's inside are some screws. However, if I put in some brackets or sheet metal hardware, it becomes top heavy and subject to getting knocked over. Maybe cat food cans would work better. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#13
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Ever felt stupid ... ?
Jeff Liebermann wrote:
I use plastic yogurt "tubs" to store screws.[...] My favorite idiot error is to knock over the tub, scattering hardware everywhere. JeffM wrote: Glue each of those to a base that is broader than the tub. A piece of 1 x 4 would do. Jeff Liebermann wrote: There's no room on the workbench to put anything that big. http://802.11junk.com/jeffl/pics/hom.../BL-shop6.html That is pretty cramped. Adding a base to the cup, however shouldn't require _that_ much more real estate. The lip is usually wider than the bottom anyway. (My favorite beverage vessels have the inverse configuration.) if I put in some brackets or sheet metal hardware, it becomes top heavy and subject to getting knocked over. Douglas Fir is usually available, but it's the bare minimum. A chunk of Oak has several times the density. A piece of steel or lead as a base will offset most loads. If there's enough steel *inside* the container, a heavy magnet beneath the platic tub might be the trick. Magnetized hardware might be an issue, however. Maybe cat food cans would work better. Yeah. Low-and-wide tuna cans are hard to upset. Again, brackets and such are the fly in the ointment. No *one* perfect solution, I guess. |
#14
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Ever felt stupid ... ?
On Thu, 15 Sep 2011 12:49:34 -0700 (PDT), JeffM
wrote: There's no room on the workbench to put anything that big. http://802.11junk.com/jeffl/pics/hom.../BL-shop6.html That is pretty cramped. That was the RF bench at home. Here's some of the palatial office workbenches. http://802.11junk.com/jeffl/pics/office/office-mess-02.jpg http://802.11junk.com/jeffl/pics/office/office-mess-03.jpg The other benches and desks are worse. Adding a base to the cup, however shouldn't require _that_ much more real estate. Every square mm is precious. The lip is usually wider than the bottom anyway. (My favorite beverage vessels have the inverse configuration.) That makes them tip over. My problem is that I tend to put the cups and cans on top of the mess. Move anything and over it goes. Putting a base plate on the cup or can isn't going to help much. A bigger cup or can, with a cover, just might work. Maybe if I clean up the mess... never mind, that will never happen. No *one* perfect solution, I guess. Actually, the plastic zip loc bags seem to work well. I haven't dumped those all over the carpet, yet. -- # Jeff Liebermann 150 Felker St #D Santa Cruz CA 95060 # 831-336-2558 # http://802.11junk.com # http://www.LearnByDestroying.com AE6KS |
#15
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Ever felt stupid ... ?
Jeff Liebermann wrote:
On Thu, 15 Sep 2011 12:49:34 -0700 (PDT), JeffM wrote: There's no room on the workbench to put anything that big. http://802.11junk.com/jeffl/pics/hom.../BL-shop6.html Hey I have that service monitor you have sitting there on your main bench, along with 2 8640B's with all the goodies in them. Looks like what you have sitting there in the middle of the pile on the upper deck towards the right.. That is pretty cramped. That was the RF bench at home. Here's some of the palatial office workbenches. http://802.11junk.com/jeffl/pics/office/office-mess-02.jpg http://802.11junk.com/jeffl/pics/office/office-mess-03.jpg Damn, that looks a lot like my place The other benches and desks are worse. I will say how ever, I have a bigger path to my benches! Jamie |
#16
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Ever felt stupid ... ?
On Thu, 15 Sep 2011 14:33:57 +0100, Arfa Daily wrote:
I had a Hartke combo on the bench today. Owner is a keyboard player, and reckons that he blows the tweeter fuse regularly, and as a result, the fuseholder was getting slack and intermittent, so could I put a new one in, please. He normally gains access to the crossover board to replace the fuse, by taking out the right hand side handle insert, but the captive nuts were getting to be a poor grip in the wood, so I decided the easiest alternative way to do the job, obtaining good access to the board, was to remove the speaker. The grill is held by ten quite large wood screws, and the speaker by eight large machine screws, into more captive nuts. I didn't unsolder the bass driver. Just left it on the bench at the end of its wires. It didn't take long to fit a new fuseholder, and screw the board back in. I dropped the speaker back into its hole, and then went to have some lunch. When I came back, I started to look for the screws to reassemble the thing, and they were gone .... Now the bench is pretty tidy at the moment, so there's no reason that they shouldn't have been easily visible, but they weren't. I spent the next half hour turning the air blue, and accusing everyone from the missus to next door's cat, of hiding or stealing the screws. I crawled through all the normal detritus and solder splats under every bench, but nothing. Eventually, I decided that I must have had a senior moment, and tidied them into a film pot (I always put screws from items waiting for parts, into film pots), and put it inside the cabinet. And then forgotten that I did, so excited was I at the prospect of my toasted cheese sandwiches for lunch. So I lifted the speaker back out and felt around in the wadding, but no, nothing. Then the phone rang, so I laid the speaker back down on the bench and yes - you've guessed it - 18 bloody great screws stuck to the magnet ... DOH ! d:~\ Arfa Been there several times. Make it now a priority to check the magnet structure for missing screws. -- Live Fast Die Young, Leave A Pretty Corpse |
#17
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Ever felt stupid ... ?
"N_Cook" wrote in message ... Arfa Daily wrote in message ... There already is a festoon bulb, as you often find, and it lights up jolly nicely when you give it a good thrashing. There was no indication on the board what value or type the fuse should be. There was a 1.6A fitted. The owner is not a 'dumb' user, so I'm guessing that the first time he replaced it, it was a 1.6A that came out. Seems about the right sort of value to me for a horn. The only thing that I would say, is that the fuse that was fitted, had no fusing characteristic markings, and looked like a 'straight' type - but I accept that it can sometimes be hard to tell just from appearance. It had failed 'cleanly', so may well have been just repeated stress. I have replaced it now with a 'T' rated type of different construction, so I guess we'll see ... Arfa Partial shorted turns on the VC ? Hard to say. It measures about 6 ohms DC, and produces a nice click when the Avo is put across it on the /100 range. In my experience, if the Avo can make a speaker click, then the coil is probably good. Not very scientific, I know ... I bunged about 10kHz in from the generator, and with the gain pot no more than half way up, it hurt my head, which would also tend to indicate that the horn is probably working pretty much as it should. Arfa |
#18
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Ever felt stupid ... ?
"Jeff Liebermann" wrote in message ... On Thu, 15 Sep 2011 14:33:57 +0100, "Arfa Daily" wrote: ...so I laid the speaker back down on the bench and yes - you've guessed it - 18 bloody great screws stuck to the magnet ... DOH ! d:~\ Arfa Chuckle. Now, I don't feel so bad. I use plastic yogurt "tubs" to store screws. If the unit is going to sit around for more than a day, I transfer the contents to plastic zip-loc bags. My favorite idiot error is to knock over the tub, scattering hardware everywhere. Things I learned a few days ago, while refilling laser printer toner cartridges. - Do not try to fill a laser toner cartridge outside in the wind. - Do not overfill the toner cartridge. - Always empty the "waste" toner BEFORE refilling. - Do not drop the toner bottle on the carpet. - Do not vacuum toner with a non-HEPA filter bag. - Do not empty trash can, full of loose toner, into the dumpster, in the wind. - Having a spare change of clothes in the office is very handy. -- Jeff Liebermann I have a big bag of 35mm film pots scavenged from a local film developing lab. They have a nice 'click-fit' lid, and are just a nice size to 'jam' nicely into holes between bits of mech. They get endlessly recycled into the bag, then back out again and into some bit of equipment, and then back into the bag. They last for years. I use the white 'polythene' ones, and you can write on these with a Sharpie to remind you where the screws came from. When the pot comes to be recycled back into the bag, the writing is easily wiped off with a drop of alcohol on a cloth. Arfa |
#19
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Ever felt stupid ... ?
"Jeff Liebermann" wrote in message ... On Thu, 15 Sep 2011 12:49:34 -0700 (PDT), JeffM wrote: There's no room on the workbench to put anything that big. http://802.11junk.com/jeffl/pics/hom.../BL-shop6.html That is pretty cramped. That was the RF bench at home. Here's some of the palatial office workbenches. http://802.11junk.com/jeffl/pics/office/office-mess-02.jpg http://802.11junk.com/jeffl/pics/office/office-mess-03.jpg The other benches and desks are worse. Adding a base to the cup, however shouldn't require _that_ much more real estate. Every square mm is precious. The lip is usually wider than the bottom anyway. (My favorite beverage vessels have the inverse configuration.) That makes them tip over. My problem is that I tend to put the cups and cans on top of the mess. Move anything and over it goes. Putting a base plate on the cup or can isn't going to help much. A bigger cup or can, with a cover, just might work. Maybe if I clean up the mess... never mind, that will never happen. No *one* perfect solution, I guess. Actually, the plastic zip loc bags seem to work well. I haven't dumped those all over the carpet, yet. -- # Jeff Liebermann My workshop was beginning to look like that - well maybe not quite that bad, but getting there. My elder daughter kept threatening to clear it up for me, so a couple of weeks back, I let her start going through the 'junk' under the benches, and on top of the one that I mostly work on. It was sorted on three basic criteria. If I didn't even know that the item was there, it was time for it to go. If I did know it was there, then it was up for evaluation. If it hadn't actually been used, or dragged out as a component donor in the last 2 years, then it was time for it to go. Otherwise, if it was potentially useful, or had some nostalgic value, then it was cleaned, catalogued, and tidied back away. The stuff that was deemed 'must go', was put up on FleaBay. So far, I've made nearly 400 quid ($600). It never ceases to amaze me what people will buy, and pay good money for. That said, I just sold an old CB radio. The guy that bought it messed me about with withdrawn and re-placed bids, and finally got it for a very good price. It was shipped out the next day by first class signed-for post. Despite my giving a very accurate description of it, he still found it necessary to continue asking me questions that he was now in a position to answer for himself. Finally, today, he left me feedback. "Received OK". Cheers pal ... Arfa |
#20
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Ever felt stupid ... ?
Jeff Liebermann wrote in
: On Thu, 15 Sep 2011 12:49:34 -0700 (PDT), JeffM wrote: There's no room on the workbench to put anything that big. http://802.11junk.com/jeffl/pics/hom.../BL-shop6.html That is pretty cramped. That was the RF bench at home. Here's some of the palatial office workbenches. http://802.11junk.com/jeffl/pics/office/office-mess-02.jpg http://802.11junk.com/jeffl/pics/office/office-mess-03.jpg The other benches and desks are worse. Adding a base to the cup, however shouldn't require _that_ much more real estate. Every square mm is precious. The lip is usually wider than the bottom anyway. (My favorite beverage vessels have the inverse configuration.) That makes them tip over. My problem is that I tend to put the cups and cans on top of the mess. Move anything and over it goes. Putting a base plate on the cup or can isn't going to help much. A bigger cup or can, with a cover, just might work. Maybe if I clean up the mess... never mind, that will never happen. No *one* perfect solution, I guess. Actually, the plastic zip loc bags seem to work well. I haven't dumped those all over the carpet, yet. you could use an icecube tray,or a muffin/cupcake baking sheet(pan). they make them in several sizes. Or Even an old egg carton. if you want to get fancy,use the cupcake liners in the cupcake pan,so you can lift the hardware out and dump in your ziploc bags. then there's plastic fishing tackle boxes,available at WalMart. some of them,you can customize the compartment sizes. -- Jim Yanik jyanik at localnet dot com |
#21
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Ever felt stupid ... ?
On 9/15/2011 9:02 PM, Jim Yanik wrote:
Jeff wrote in Actually, the plastic zip loc bags seem to work well. I haven't dumped those all over the carpet, yet. you could use an icecube tray,or a muffin/cupcake baking sheet(pan). they make them in several sizes. Or Even an old egg carton. I feel your pain brother. I came up with a novel solution to this. I like asparagus. The can's around 3" diameter and 8" tall. I made a bracket to hold 4 of them under the "over the bench" shelf. As I remove screws, knobs and the occasional long bit of hardware, I drop them in the can. IF the "thing being beat on" has to be set aside, ordered parts etc. then the can gets dumped into a zip lock bag and placed with the thing I was working on. The other problem I *used* to have. My eyesight ain't what it used to be, so I need an eye loupe occasionally to read part numbers or double check soldered bits. This requires taking off my glasses. You know where this is headed. I'd lose them in the "pile 'o cruft" on the bench. I broke down and bought a set of those over the back of your neck "granny leashes" for the glasses. Now I don't have to grope around to find them. Jeff-1.0 -- "Everything from Crackers to Coffins" |
#22
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Ever felt stupid ... ?
On Thu, 15 Sep 2011 14:33:57 +0100, "Arfa Daily"
put finger to keyboard and composed: Eventually, I decided that I must have had a senior moment, and tidied them into a film pot (I always put screws from items waiting for parts, into film pots), ... I use these as well, but mostly for returning faulty parts to the customer. I prefer to replace the screws in their original locations as I'm dismantling the device. That way I don't have to rely on my memory. - Franc Zabkar -- Please remove one 'i' from my address when replying by email. |
#23
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Ever felt stupid ... ?
"Franc Zabkar" I use these as well, but mostly for returning faulty parts to the customer. ** Why do that ?? Almost no customer ever wants to see them and the tiny few that do have very weird reasons. I will not return faulty valves to customers for fear they may try to re-use or sell them. ...... Phil |
#24
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Ever felt stupid ... ?
Franc Zabkar wrote:
[...] returning faulty parts to the customer. Phil Allison wrote: Why do that ?[...] I will not return faulty valves to customers for fear they may try to re-use or sell them. One guy I knew got tired of folks second-guessing him and checking the old tubes on a drugstore tester and finding they were "OK". Military exchange vendor rules said the parts had to be returned so once he had the gear fixed, he took the bad tubes and hooked up each filament to a variac and ran it up until *POP*. Nothing in the rule book on that, apparently. |
#25
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Ever felt stupid ... ?
Jeff Liebermann wrote:
Here's some of the palatial office workbenches. http://802.11junk.com/jeffl/pics/office/office-mess-02.jpg Now, there's a man in need of some shelving. http://802.11junk.com/jeffl/pics/office/office-mess-03.jpg Well, that's a start. (I assume that shot was *after* the temblor.) |
#26
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Ever felt stupid ... ?
"JeffM" Franc Zabkar wrote: [...] returning faulty parts to the customer. Phil Allison wrote: Why do that ?[...] I will not return faulty valves to customers for fear they may try to re-use or sell them. One guy I knew got tired of folks second-guessing him and checking the old tubes on a drugstore tester and finding they were "OK". ** How damned annoying. Military exchange vendor rules said the parts had to be returned so once he had the gear fixed, he took the bad tubes and hooked up each filament to a variac and ran it up until *POP*. Nothing in the rule book on that, apparently. ** I once bent and broke the pins on some octal valves a customer insisted on having back. You should have seen their face .... On another occasion, a vendor sold me 50 each MJ15003/4 power transistors that proved to be fakes ( re-labelled, old stock 2N3055s and MJ2955s). So I took off the numbering with acetone and sent them back with a request for a full refund. Got a hot letter from his lawyer over that one. Got the refund too, eventually. ..... Phil |
#27
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"Jeffrey Angus" wrote in message
... On 9/15/2011 9:02 PM, Jim Yanik wrote: Jeff wrote in snip the "thing being beat on" has to be set aside, snip This term now replaces "unit under test" in my lexicon. :-) Mark Z. |
#28
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Ever felt stupid ... ?
Mark Zacharias wrote: "Jeffrey Angus" wrote in message ... On 9/15/2011 9:02 PM, Jim Yanik wrote: Jeff wrote in snip the "thing being beat on" has to be set aside, snip This term now replaces "unit under test" in my lexicon. You DO NOT want to see his hole punch! ;-) -- You can't have a sense of humor, if you have no sense. |
#29
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On 9/16/2011 7:02 AM, Mark Zacharias wrote:
"Jeffrey Angus" wrote in message ... On 9/15/2011 9:02 PM, Jim Yanik wrote: Jeff wrote in snip the "thing being beat on" has to be set aside, snip This term now replaces "unit under test" in my lexicon. :-) Mark Z. *grins* I'll have my people send your people the proper forms for licensing. Jeff-1.0 -- "Everything from Crackers to Coffins" |
#30
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"Mark Zacharias" wrote in
.com: "Jeffrey Angus" wrote in message ... On 9/15/2011 9:02 PM, Jim Yanik wrote: Jeff wrote in snip the "thing being beat on" has to be set aside, snip This term now replaces "unit under test" in my lexicon. :-) Mark Z. DUT;device under test. easier to pronounce than UUT. Or "TBBO". -- Jim Yanik jyanik at localnet dot com |
#31
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On Sep 15, 11:30*am, Jeff Liebermann wrote:
On Thu, 15 Sep 2011 11:11:54 -0700 (PDT), JeffM wrote: Jeff Liebermann wrote: I use plastic yogurt "tubs" to store screws.[...] My favorite idiot error is to knock over the tub, scattering hardware everywhere. Glue each of those to a base that is broader than the tub. A piece of 1 x 4 would do. Won't work for me. *There's no room on the workbench to put anything that big. * http://802.11junk.com/jeffl/pics/home/slides/BL-shop6.html The plastic tubs work well enough when all that's inside are some screws. *However, if I put in some brackets or sheet metal hardware, it becomes top heavy and subject to getting knocked over. *Maybe cat food cans would work better. -- Jeff Liebermann * * 150 Felker St #D * *http://www.LearnByDestroying.com Santa Cruz CA 95060http://802.11junk.com Skype: JeffLiebermann * * AE6KS * *831-336-2558 wow! you missed a space above your bench for a wall mounted rack. you know, the kind that blocks the light |
#32
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On Thu, 15 Sep 2011 21:41:39 -0700 (PDT), JeffM
wrote: Jeff Liebermann wrote: Here's some of the palatial office workbenches. http://802.11junk.com/jeffl/pics/office/office-mess-02.jpg Now, there's a man in need of some shelving. I have quite a bit of shelving in the office, all of it full of junk. There are also two closets, full of junk, and 3 more rolling shelf units, full of junk, and two desks, piled high with junk. Also, a small table which 3 sewing machines under repair, and another desk, with the cell phone rebuilding division. Diversification is the key to ummm.... well, something. Here's an old 2006 photo. Scroll horizontally: http://802.11junk.com/jeffl/pics/office/slides/office-panorama-2.html I'll post a replacement when I have time to make another panorama. http://802.11junk.com/jeffl/pics/office/office-mess-03.jpg Well, that's a start. (I assume that shot was *after* the temblor.) The two photos were shot yesterday. The quake was in 1989. I was in a different office during the quake but moved into my present palatial offices in 1990. Having all the racks on wheels should help with the next quake if the movement is mostly horizontal. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#33
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On Fri, 16 Sep 2011 08:17:16 -0700 (PDT), Robert Macy
wrote: wow! you missed a space above your bench for a wall mounted rack. you know, the kind that blocks the light There's a 4ft fluorescent lamp under the shelf. Much better than an overhead lamp. There are two more shop lights hanging from the ceiling, but the shelf light works best. I also have a light on the articulated magnifying glass and an LED light that I wear on my head. All the racks are in another room, crammed with equipment, little of which is operational. Most of the racks are used for storing equipment, or in one case, for hanging my various jackets and overalls. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#34
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Ever felt stupid ... ?
On 15/09/2011 11:33 PM, Arfa Daily wrote:
Ever felt stupid? Well, I had this girlfriend once... |
#35
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Jeff Liebermann wrote in
: On Fri, 16 Sep 2011 08:17:16 -0700 (PDT), Robert Macy wrote: wow! you missed a space above your bench for a wall mounted rack. you know, the kind that blocks the light There's a 4ft fluorescent lamp under the shelf. Much better than an overhead lamp. There are two more shop lights hanging from the ceiling, but the shelf light works best. I also have a light on the articulated magnifying glass and an LED light that I wear on my head. All the racks are in another room, crammed with equipment, little of which is operational. Most of the racks are used for storing equipment, or in one case, for hanging my various jackets and overalls. it's best to mount the main light for the bench over and slightly behind you,so it lights your work. I've had to design a couple of TEK field service office layouts,when we moved into new buildings. Having the main light directly over the bench results in shadows on the vertical parts of the DUT. I prefer to not have to wear a headlight. -- Jim Yanik jyanik at localnet dot com |
#36
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I didn't even get done reading your post and the first thing that came
to mind was the speaker magnet. 20/20 hindsight is precious. I think one of the worst things to take apart is a laptop. I used labeled 2" x 3" baggies for everything. The last stupid thing I did was when I was working on a lawn mower I took the flywheel cover off and regapped the coil with an index card (best thing to use) and I pinched the spark plug wire when reassembling. The mower started, ran for a while until I moved it and it stopped. The spark plug wire was pinched pretty bad. I repaired it with high temperature self-fusing electrical tape, about $40/roll, but I always have it handy. |
#37
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Ever felt stupid ... ?
Ron D. wrote:
I didn't even get done reading your post That wasn't *my post, dude. If you're going to post to Usenet (especially if you're going to use Google's Web-based interface), learn how to do that properly. Start by learning how to include some context from the post to which you are responding. |
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