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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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Monitor/mains connection
As per previous post I have now opened up the monitor and checked the
mains connection but cannot see anything wrong with it. (images attached) The mains connection was intermittently cutting out, would make a slight crackling noise, if the cable was wiggled it would reconnect. If I jolted the desk it sits on it would also cut out on ocassion so I am quite sure it is the mains connction but cant see anything.I also tried a substitute mains cable but that made no difference. Anything else I should try while I have it apart (I am not electronic literate) https://imgur.com/a/dKRYP https://imgur.com/a/FxJPr |
#2
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Monitor/mains connection
On Tuesday, 17 October 2017 18:06:57 UTC+1, ss wrote:
As per previous post I have now opened up the monitor and checked the mains connection but cannot see anything wrong with it. (images attached) The mains connection was intermittently cutting out, would make a slight crackling noise, if the cable was wiggled it would reconnect. If I jolted the desk it sits on it would also cut out on ocassion so I am quite sure it is the mains connction but cant see anything.I also tried a substitute mains cable but that made no difference. Anything else I should try while I have it apart (I am not electronic literate) https://imgur.com/a/dKRYP https://imgur.com/a/FxJPr It does look OK although there's a line on the soldering pad of £L1 in the centre of the frame, might be worth resoldering that. Also it could be the pins of that plug not connecting to your new cable socket due to wear or dirt so might be an idea to clean/polish the pins. On a friends monitor the pins were slightly bent too, but that just needed a new cable socket. |
#3
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Monitor/mains connection
On 17/10/2017 18:06, ss wrote:
Anything else I should try while I have it apart (I am not electronic literate) https://imgur.com/a/dKRYP https://imgur.com/a/FxJPr How tight is that fuse in its holder? (the white bodied item to the right of the blue capacitor) -- mailto: news {at} admac {dot] myzen {dot} co {dot} uk |
#4
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Monitor/mains connection
ss wrote:
As per previous post I have now opened up the monitor and checked the mains connection but cannot see anything wrong with it. (images attached) The mains connection was intermittently cutting out, would make a slight crackling noise, if the cable was wiggled it would reconnect. If I jolted the desk it sits on it would also cut out on ocassion so I am quite sure it is the mains connction but cant see anything.I also tried a substitute mains cable but that made no difference. Anything else I should try while I have it apart (I am not electronic literate) https://imgur.com/a/dKRYP https://imgur.com/a/FxJPr Dirty mains connection on the monitor? Try cleaning the plug connection on the monitor using a toothbrush with meths on it. Mrs Pounder had a mobile phone that would not charge, I used the above method on the phone charging insert thing and the phone now charges up with no problems. The insert thing on the phone did not look to be dirty. |
#5
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Monitor/mains connection
On Tue, 17 Oct 2017 18:22:56 +0100, alan_m
wrote: On 17/10/2017 18:06, ss wrote: Anything else I should try while I have it apart (I am not electronic literate) https://imgur.com/a/dKRYP https://imgur.com/a/FxJPr How tight is that fuse in its holder? (the white bodied item to the right of the blue capacitor) Wouldn't the answer be 'very' as they are normally spot welded into the 'holders'? Cheers, T i m |
#6
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Monitor/mains connection
Well no use showing a picture to me mate. However if you can actually here
it then there're probably signs of the connection sparking. The usual culprit is the connections on the pcb if its a pcb mounted mains connector, failing that if the stress on the socket is the problem the connection on the socket itself, often crimped or welded can become loose or corroded or worn. If you can trace the connections through from pin to wire best use a meter and wiggle things and see what gives, literally. The last one of these I met was on a Philips device and it turned out to be dry joints on the pcb where the ends of the mains socket was soldered. Heat them up well and apply leadeed solder but be aware that another problem can be the foil lifting and cracking and then you have to start thinking about bridging cracks with wire. I'd definitely find somebody used to working on pcbs before you experiment on it yourself. I used to be good at it but not with no sight! Brian -- ----- - This newsgroup posting comes to you directly from... The Sofa of Brian Gaff... Blind user, so no pictures please! "ss" wrote in message ... As per previous post I have now opened up the monitor and checked the mains connection but cannot see anything wrong with it. (images attached) The mains connection was intermittently cutting out, would make a slight crackling noise, if the cable was wiggled it would reconnect. If I jolted the desk it sits on it would also cut out on ocassion so I am quite sure it is the mains connction but cant see anything.I also tried a substitute mains cable but that made no difference. Anything else I should try while I have it apart (I am not electronic literate) https://imgur.com/a/dKRYP https://imgur.com/a/FxJPr |
#7
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Monitor/mains connection
I have had fuses that were in themselves intermittent in the past, but worth
a look. Brian -- ----- - This newsgroup posting comes to you directly from... The Sofa of Brian Gaff... Blind user, so no pictures please! "alan_m" wrote in message ... On 17/10/2017 18:06, ss wrote: Anything else I should try while I have it apart (I am not electronic literate) https://imgur.com/a/dKRYP https://imgur.com/a/FxJPr How tight is that fuse in its holder? (the white bodied item to the right of the blue capacitor) -- mailto: news {at} admac {dot] myzen {dot} co {dot} uk |
#8
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Monitor/mains connection
You would be surprised, I can assure you.
Brian -- ----- - This newsgroup posting comes to you directly from... The Sofa of Brian Gaff... Blind user, so no pictures please! "T i m" wrote in message ... On Tue, 17 Oct 2017 18:22:56 +0100, alan_m wrote: On 17/10/2017 18:06, ss wrote: Anything else I should try while I have it apart (I am not electronic literate) https://imgur.com/a/dKRYP https://imgur.com/a/FxJPr How tight is that fuse in its holder? (the white bodied item to the right of the blue capacitor) Wouldn't the answer be 'very' as they are normally spot welded into the 'holders'? Cheers, T i m |
#10
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Monitor/mains connection
On Tue, 17 Oct 2017 19:35:57 +0100, "Brian Gaff"
wrote: You would be surprised, I can assure you. I'm happy to be surprised but I'm not sure that will assure me at all. ;-) What you probably can't see is that I don't believe that it is a 'fuseholder', it's a std glass bodied fuse that has been spot welded into two wired end caps that are then soldered into the board like any other component. That's not to say they missed out on the spot-welding phase of course ... Cheers, T i m |
#11
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Monitor/mains connection
"T i m" wrote in message ... On Tue, 17 Oct 2017 18:22:56 +0100, alan_m wrote: On 17/10/2017 18:06, ss wrote: Anything else I should try while I have it apart (I am not electronic literate) https://imgur.com/a/dKRYP https://imgur.com/a/FxJPr How tight is that fuse in its holder? (the white bodied item to the right of the blue capacitor) Wouldn't the answer be 'very' as they are normally spot welded into the 'holders'? Looks more like a replaceable fuse to me. |
#12
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Monitor/mains connection
On Tuesday, 17 October 2017 18:06:57 UTC+1, ss wrote:
As per previous post I have now opened up the monitor and checked the mains connection but cannot see anything wrong with it. (images attached) The mains connection was intermittently cutting out, would make a slight crackling noise, if the cable was wiggled it would reconnect. If I jolted the desk it sits on it would also cut out on ocassion so I am quite sure it is the mains connction but cant see anything.I also tried a substitute mains cable but that made no difference. Anything else I should try while I have it apart (I am not electronic literate) https://imgur.com/a/dKRYP https://imgur.com/a/FxJPr welcome to uk.d-i-y doing electronics, more noise than signal. |
#13
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Monitor/mains connection
On 18/10/17 01:03, wrote:
On Tuesday, 17 October 2017 18:06:57 UTC+1, ss wrote: As per previous post I have now opened up the monitor and checked the mains connection but cannot see anything wrong with it. (images attached) The mains connection was intermittently cutting out, would make a slight crackling noise, if the cable was wiggled it would reconnect. If I jolted the desk it sits on it would also cut out on ocassion so I am quite sure it is the mains connction but cant see anything.I also tried a substitute mains cable but that made no difference. Anything else I should try while I have it apart (I am not electronic literate) https://imgur.com/a/dKRYP https://imgur.com/a/FxJPr welcome to uk.d-i-y doing electronics, more noise than signal. mostly contributed by you. A can of freeze spray is one way to identify any rocky joints. Resoldering them all is cheaper. I once resoldred every single eyelet on a TV set I had - at least 4 were dodgy, and I never identified which ones they were, but the faults disappered one by one as areas of the board were soldered. -- Any fool can believe in principles - and most of them do! |
#14
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Monitor/mains connection
On Wed, 18 Oct 2017 10:19:54 +1100, "Rod Speed"
wrote: "T i m" wrote in message .. . On Tue, 17 Oct 2017 18:22:56 +0100, alan_m wrote: On 17/10/2017 18:06, ss wrote: Anything else I should try while I have it apart (I am not electronic literate) https://imgur.com/a/dKRYP https://imgur.com/a/FxJPr How tight is that fuse in its holder? (the white bodied item to the right of the blue capacitor) Wouldn't the answer be 'very' as they are normally spot welded into the 'holders'? Looks more like a replaceable fuse to me. It is, as long as you have a soldering iron. It's a ceramic, wire ended or 'pigtail' fuse. http://thumbs2.ebaystatic.com/d/l225...lnHTCMfZ8Q.jpg HTH Cheers, T i m |
#15
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Monitor/mains connection
On Wed, 18 Oct 2017 07:11:47 +0100, The Natural Philosopher
wrote: On 18/10/17 01:03, wrote: On Tuesday, 17 October 2017 18:06:57 UTC+1, ss wrote: As per previous post I have now opened up the monitor and checked the mains connection but cannot see anything wrong with it. (images attached) The mains connection was intermittently cutting out, would make a slight crackling noise, if the cable was wiggled it would reconnect. If I jolted the desk it sits on it would also cut out on ocassion so I am quite sure it is the mains connction but cant see anything.I also tried a substitute mains cable but that made no difference. Anything else I should try while I have it apart (I am not electronic literate) https://imgur.com/a/dKRYP https://imgur.com/a/FxJPr welcome to uk.d-i-y doing electronics, more noise than signal. mostly contributed by you. A can of freeze spray is one way to identify any rocky joints. Resoldering them all is cheaper. I once resoldred every single eyelet on a TV set I had - at least 4 were dodgy, and I never identified which ones they were, but the faults disappered one by one as areas of the board were soldered. I was looking at the ends of the IEC plug pins where they are split to retain them in the uprights that in-turn are soldered into the PCB. I wonder if the OP can move the pins at all as they should be solid (and given there is no other obvious issue)? Cheers, T i m |
#16
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Monitor/mains connection
On 18/10/2017 07:37, T i m wrote:
I was looking at the ends of the IEC plug pins where they are split to retain them in the uprights that in-turn are soldered into the PCB. I wonder if the OP can move the pins at all as they should be solid (and given there is no other obvious issue)? Everything appears to be rock solid including the fuse, I cant see any movement at all. |
#17
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Monitor/mains connection
On Wed, 18 Oct 2017 08:20:23 +0100, ss wrote:
On 18/10/2017 07:37, T i m wrote: I was looking at the ends of the IEC plug pins where they are split to retain them in the uprights that in-turn are soldered into the PCB. I wonder if the OP can move the pins at all as they should be solid (and given there is no other obvious issue)? Everything appears to be rock solid including the fuse, I cant see any movement at all. Ok, so what about where the ends of the pins are split to hold them in the socket itself, do they look 100% and could you clean them up and get a bigish iron in there (and some flux etc) and solder them in as well? If you had a continuity tester (beeper) you could clip one end onto the mains plug (L then N etc) and put the other probe around the back of the socket / PCB as you wiggle the plug etc? Much easier to hear than see on an ohmmeter (especially digital) and safer than trying the same on the mains etc. Cheers, T i m |
#18
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Monitor/mains connection
On 18/10/2017 08:32, T i m wrote:
Ok, so what about where the ends of the pins are split to hold them in the socket itself, do they look 100% and could you clean them up and get a bigish iron in there (and some flux etc) and solder them in as well? If you had a continuity tester (beeper) you could clip one end onto the mains plug (L then N etc) and put the other probe around the back of the socket / PCB as you wiggle the plug etc? Much easier to hear than see on an ohmmeter (especially digital) and safer than trying the same on the mains etc. Yes I have a continuity tester so will have a go with that later today. I will see what I can access with the soldering iron. I am fast approaching the nothing to lose stage :-) |
#19
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Monitor/mains connection
On 18/10/2017 07:33, T i m wrote:
On Wed, 18 Oct 2017 10:19:54 +1100, "Rod Speed" wrote: "T i m" wrote in message ... On Tue, 17 Oct 2017 18:22:56 +0100, alan_m wrote: On 17/10/2017 18:06, ss wrote: Anything else I should try while I have it apart (I am not electronic literate) https://imgur.com/a/dKRYP https://imgur.com/a/FxJPr How tight is that fuse in its holder? (the white bodied item to the right of the blue capacitor) Wouldn't the answer be 'very' as they are normally spot welded into the 'holders'? Looks more like a replaceable fuse to me. It is, as long as you have a soldering iron. It's a ceramic, wire ended or 'pigtail' fuse. http://thumbs2.ebaystatic.com/d/l225...lnHTCMfZ8Q.jpg HTH Cheers, T i m Either way, it might be worth shorting it temporarily and seeing whether the problems persist. If the problem is something else, very difficult to fix, the monitor will need to be thrown out anyway. |
#20
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Monitor/mains connection
On Wed, 18 Oct 2017 08:57:15 +0100, ss wrote:
On 18/10/2017 08:32, T i m wrote: Ok, so what about where the ends of the pins are split to hold them in the socket itself, do they look 100% and could you clean them up and get a bigish iron in there (and some flux etc) and solder them in as well? If you had a continuity tester (beeper) you could clip one end onto the mains plug (L then N etc) and put the other probe around the back of the socket / PCB as you wiggle the plug etc? Much easier to hear than see on an ohmmeter (especially digital) and safer than trying the same on the mains etc. Yes I have a continuity tester so will have a go with that later today. Good for intermittent connections as they normally screech and wail. ;-) I will see what I can access with the soldering iron. If you do try that it will need to be a big iron to 1) Get enough heat in there to get the solder to flow round the pin and plate and 2) get enough heat in there quickly, no as to not overheat / melt the socket. I am fast approaching the nothing to lose stage :-) That's always a good POV for such things. ;-) If it does turn out to be the socket and you can't find a replacement easily, you could always add a flying socket by cutting an IEC extension lead in half and just making sure it's retained properly at the screen end. Or, depending on cable access, just a straight mains lead soldered directly etc? Cheers, T i m |
#21
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Monitor/mains connection
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#22
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Monitor/mains connection
On Wed, 18 Oct 2017 10:05:01 +0100, GB
wrote: snip It is, as long as you have a soldering iron. It's a ceramic, wire ended or 'pigtail' fuse. http://thumbs2.ebaystatic.com/d/l225...lnHTCMfZ8Q.jpg HTH Either way, it might be worth shorting it temporarily and seeing whether the problems persist. As long as you have the correct rated fused in the mains plug, yes. If the problem is something else, very difficult to fix, How do you know that? It sounds like a 'mechanical' fault and so likely just a crack, bad component or dry joint. the monitor will need to be thrown out anyway. Time will tell. ;-) Cheers, T i m |
#23
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Monitor/mains connection
"T i m" wrote in message ... On Wed, 18 Oct 2017 10:19:54 +1100, "Rod Speed" wrote: "T i m" wrote in message . .. On Tue, 17 Oct 2017 18:22:56 +0100, alan_m wrote: On 17/10/2017 18:06, ss wrote: Anything else I should try while I have it apart (I am not electronic literate) https://imgur.com/a/dKRYP https://imgur.com/a/FxJPr How tight is that fuse in its holder? (the white bodied item to the right of the blue capacitor) Wouldn't the answer be 'very' as they are normally spot welded into the 'holders'? Looks more like a replaceable fuse to me. It is, as long as you have a soldering iron. It's a ceramic, wire ended or 'pigtail' fuse. http://thumbs2.ebaystatic.com/d/l225...lnHTCMfZ8Q.jpg That doesn't have the double metal cap on each end and the pic at the top doesn't have any evidence of an axial wire either. HTH It didn't. |
#24
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Monitor/mains connection
On Wednesday, 18 October 2017 10:08:30 UTC+1, GB wrote:
On 18/10/2017 01:03, tabbypurr wrote: welcome to uk.d-i-y doing electronics, more noise than signal. That's a bit unkind, but I much prefer things I can see, and those itty-bitty electrons are so small and quick! Better to caution people asking for advice really. Sci.electronics.repair is a suitable ng. NT |
#25
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Monitor/mains connection
On 18/10/2017 10:12, T i m wrote:
On Wed, 18 Oct 2017 10:05:01 +0100, GB wrote: snip It is, as long as you have a soldering iron. It's a ceramic, wire ended or 'pigtail' fuse. http://thumbs2.ebaystatic.com/d/l225...lnHTCMfZ8Q.jpg HTH Either way, it might be worth shorting it temporarily and seeing whether the problems persist. As long as you have the correct rated fused in the mains plug, yes. If the problem is something else, very difficult to fix, How do you know that? I nearly changed that to read "If the problem is something else, that turns out to be very difficult to fix". |
#26
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Monitor/mains connection
"GB" wrote in message news On 18/10/2017 07:33, T i m wrote: On Wed, 18 Oct 2017 10:19:54 +1100, "Rod Speed" wrote: "T i m" wrote in message ... On Tue, 17 Oct 2017 18:22:56 +0100, alan_m wrote: On 17/10/2017 18:06, ss wrote: Anything else I should try while I have it apart (I am not electronic literate) https://imgur.com/a/dKRYP https://imgur.com/a/FxJPr How tight is that fuse in its holder? (the white bodied item to the right of the blue capacitor) Wouldn't the answer be 'very' as they are normally spot welded into the 'holders'? Looks more like a replaceable fuse to me. It is, as long as you have a soldering iron. It's a ceramic, wire ended or 'pigtail' fuse. http://thumbs2.ebaystatic.com/d/l225...lnHTCMfZ8Q.jpg HTH Either way, it might be worth shorting it temporarily and seeing whether the problems persist. If the problem is something else, very difficult to fix, Nope, easy enough to use a multimeter and see where the cracked trace or dry joint is with a fault like that. the monitor will need to be thrown out anyway. Nope, both are trivially fixed. |
#27
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Monitor/mains connection
On Wed, 18 Oct 2017 10:08:26 +0100, GB wrote:
On 18/10/2017 01:03, wrote: welcome to uk.d-i-y doing electronics, more noise than signal. That's a bit unkind, but I much prefer things I can see, and those itty-bitty electrons are so small and quick! It's so hard to get an angle grinder on them. And WD-40 makes them stick together. -- My posts are my copyright and if @diy_forums or Home Owners' Hub wish to copy them they can pay me £1 a message. Use the BIG mirror service in the UK: http://www.mirrorservice.org *lightning surge protection* - a w_tom conductor |
#28
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Monitor/mains connection
On Wed, 18 Oct 2017 10:22:13 +0100, GB
wrote: On 18/10/2017 10:12, T i m wrote: On Wed, 18 Oct 2017 10:05:01 +0100, GB wrote: snip It is, as long as you have a soldering iron. It's a ceramic, wire ended or 'pigtail' fuse. http://thumbs2.ebaystatic.com/d/l225...lnHTCMfZ8Q.jpg HTH Either way, it might be worth shorting it temporarily and seeing whether the problems persist. As long as you have the correct rated fused in the mains plug, yes. If the problem is something else, very difficult to fix, How do you know that? I nearly changed that to read "If the problem is something else, that turns out to be very difficult to fix". Ah. ;-) The thing is, 'difficulty' can be a function of experience, logic and luck. I fixed someone's 'dead' TV the other day by changing one diode (well, I replaced 4 but only one was faulty). *Very* straightforward and easy repair, once you knew what the fault was. ;-) Luckily, pretty well anything that can go bad and is worth repairing is covered somewhere on the Interwebs these days so you often don't have to do much diagnostic work. ;-) Cheers, T i m |
#29
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Monitor/mains connection
On Wed, 18 Oct 2017 20:13:16 +1100, "Rod Speed"
wrote: "T i m" wrote in message .. . On Wed, 18 Oct 2017 10:19:54 +1100, "Rod Speed" wrote: "T i m" wrote in message ... On Tue, 17 Oct 2017 18:22:56 +0100, alan_m wrote: On 17/10/2017 18:06, ss wrote: Anything else I should try while I have it apart (I am not electronic literate) https://imgur.com/a/dKRYP https://imgur.com/a/FxJPr How tight is that fuse in its holder? (the white bodied item to the right of the blue capacitor) Wouldn't the answer be 'very' as they are normally spot welded into the 'holders'? Looks more like a replaceable fuse to me. It is, as long as you have a soldering iron. It's a ceramic, wire ended or 'pigtail' fuse. http://thumbs2.ebaystatic.com/d/l225...lnHTCMfZ8Q.jpg That doesn't have the double metal cap on each end and the pic at the top doesn't have any evidence of an axial wire either. That's because you are stupid mate. HTH It didn't. It wasn't expected to help you, just people who aren't stupid. HTH. Cheers, T i m |
#30
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Monitor/mains connection
On 18/10/2017 12:36, T i m wrote:
On Wed, 18 Oct 2017 10:22:13 +0100, GB wrote: On 18/10/2017 10:12, T i m wrote: On Wed, 18 Oct 2017 10:05:01 +0100, GB wrote: snip It is, as long as you have a soldering iron. It's a ceramic, wire ended or 'pigtail' fuse. http://thumbs2.ebaystatic.com/d/l225...lnHTCMfZ8Q.jpg HTH Either way, it might be worth shorting it temporarily and seeing whether the problems persist. As long as you have the correct rated fused in the mains plug, yes. If the problem is something else, very difficult to fix, How do you know that? I nearly changed that to read "If the problem is something else, that turns out to be very difficult to fix". Ah. ;-) The thing is, 'difficulty' can be a function of experience, logic and luck. Absolutely. But the OP did say "Anything else I should try while I have it apart (I am not electronic literate)". I am similarly fairly illiterate with electronics. It limits what we can do, particularly as we probably don't have the right tools. I fixed someone's 'dead' TV the other day by changing one diode (well, I replaced 4 but only one was faulty). *Very* straightforward and easy repair, once you knew what the fault was. ;-) I know what a diode is and does, but I'm not sure I'd try replacing one. Perhaps I'm just being wimpish. Luckily, pretty well anything that can go bad and is worth repairing is covered somewhere on the Interwebs these days so you often don't have to do much diagnostic work. ;-) Cheers, T i m |
#31
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Monitor/mains connection
On Wed, 18 Oct 2017 14:10:00 +0100, GB
wrote: snip The thing is, 'difficulty' can be a function of experience, logic and luck. Absolutely. But the OP did say "Anything else I should try while I have it apart (I am not electronic literate)". But he did ask, so (I'd assume) keen to try stuff. I am similarly fairly illiterate with electronics. Ok and no reason why you should be etc (everybody to their own' etc). It limits what we can do, particularly as we probably don't have the right tools. Quite. Luckily the only thing anyone has referenced toolwise the OP seems to have. ;-) I fixed someone's 'dead' TV the other day by changing one diode (well, I replaced 4 but only one was faulty). *Very* straightforward and easy repair, once you knew what the fault was. ;-) I know what a diode is and does, but I'm not sure I'd try replacing one. Well, as long as we are talking 'through hole' components it nearly doesn't matter what they are (with some provisos etc). Perhaps I'm just being wimpish. Cautious maybe and that's not a bad thing sometime (especially when iniquitous looking devices can store lethal voltages or conversely, be damaged just by you touching them). I actually enjoy soldering and especially assembling (good) kits (as you get to do all the soldering and hopefully see it work straight away without all the component chasing). We got our daughter soldering from a very early age (5 I think) and she assembled an LED kitchen timer kit that we still use nearly daily. ;-) Cheers, T i m p.s. I have a few mates who whilst they can solder, they often ask me to do the 'tricky stuff' because they know I like and am reasonably good at it (although the skill is often more in de-soldering (without damage) than soldering per-se). I just repaired my Weller soldering station and realised it's over 40 years old! That's built an entire disco (amps, mixers, light controllers etc), numerous RC models, hundreds of general projects, repaired 100's of things (the last being re-building the wiring loom that feeds the tailgate on our car) and even done quite a bit on the kitcar. ;-) |
#32
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Monitor/mains connection
"GB" wrote in message news On 18/10/2017 12:36, T i m wrote: On Wed, 18 Oct 2017 10:22:13 +0100, GB wrote: On 18/10/2017 10:12, T i m wrote: On Wed, 18 Oct 2017 10:05:01 +0100, GB wrote: snip It is, as long as you have a soldering iron. It's a ceramic, wire ended or 'pigtail' fuse. http://thumbs2.ebaystatic.com/d/l225...lnHTCMfZ8Q.jpg HTH Either way, it might be worth shorting it temporarily and seeing whether the problems persist. As long as you have the correct rated fused in the mains plug, yes. If the problem is something else, very difficult to fix, How do you know that? I nearly changed that to read "If the problem is something else, that turns out to be very difficult to fix". Ah. ;-) The thing is, 'difficulty' can be a function of experience, logic and luck. Absolutely. But the OP did say "Anything else I should try while I have it apart (I am not electronic literate)". I am similarly fairly illiterate with electronics. It limits what we can do, particularly as we probably don't have the right tools. I fixed someone's 'dead' TV the other day by changing one diode (well, I replaced 4 but only one was faulty). *Very* straightforward and easy repair, once you knew what the fault was. ;-) I know what a diode is and does, but I'm not sure I'd try replacing one. Perhaps I'm just being wimpish. Yes you are, its very easy to do. Certainly makes no sense for someone like you to diagnose the failure of a complex ic, let alone try replacing one, but is very easy to replace diodes and bulging caps etc and to resolder dry joints on major components and thats usually where they occur for a reason. Luckily, pretty well anything that can go bad and is worth repairing is covered somewhere on the Interwebs these days so you often don't have to do much diagnostic work. ;-) |
#33
Posted to uk.d-i-y
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Monitor/mains connection
On 18/10/2017 18:55, Rod Speed wrote:
"GB" wrote in message news On 18/10/2017 12:36, T i m wrote: On Wed, 18 Oct 2017 10:22:13 +0100, GB wrote: On 18/10/2017 10:12, T i m wrote: On Wed, 18 Oct 2017 10:05:01 +0100, GB wrote: snip It is, as long as you have a soldering iron. It's a ceramic, wire ended or 'pigtail' fuse. http://thumbs2.ebaystatic.com/d/l225...lnHTCMfZ8Q.jpg HTH Either way, it might be worth shorting it temporarily and seeing whether the problems persist. As long as you have the correct rated fused in the mains plug, yes. If the problem is something else, very difficult to fix, How do you know that? I nearly changed that to read "If the problem is something else, that turns out to be very difficult to fix". Ah. ;-) The thing is, 'difficulty' can be a function of experience, logic and luck. Absolutely. But the OP did say "Anything else I should try while I have it apart (I am not electronic literate)". I am similarly fairly illiterate with electronics. It limits what we can do, particularly as we probably don't have the right tools. I fixed someone's 'dead' TV the other day by changing one diode (well, I replaced 4 but only one was faulty). *Very* straightforward and easy repair, once you knew what the fault was. ;-) I know what a diode is and does, but I'm not sure I'd try replacing one. Perhaps I'm just being wimpish. Yes you are, its very easy to do. I'd have a 50/50 chance of putting it in the right way round. ))) Certainly makes no sense for someone like you to diagnose the failure of a complex ic, let alone try replacing one, but is very easy to replace diodes and bulging caps etc and to resolder dry joints on major components and thats usually where they occur for a reason. I'll try to be less wimpish. Luckily, pretty well anything that can go bad and is worth repairing is covered somewhere on the Interwebs these days so you often don't have to do much diagnostic work. ;-) |
#34
Posted to uk.d-i-y
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Monitor/mains connection
On 18/10/2017 10:54, Bob Eager wrote:
On Wed, 18 Oct 2017 10:08:26 +0100, GB wrote: On 18/10/2017 01:03, wrote: welcome to uk.d-i-y doing electronics, more noise than signal. That's a bit unkind, but I much prefer things I can see, and those itty-bitty electrons are so small and quick! It's so hard to get an angle grinder on them. And WD-40 makes them stick together. ..........." If you had a continuity tester (beeper) you could clip one end onto the mains plug (L then N etc) and put the other probe around the back of the socket / PCB as you wiggle the plug etc? Much easier to hear than see on an ohmmeter (especially digital) and safer than trying the same on the mains etc. Yes I have a continuity tester so will have a go with that later today. Good for intermittent connections as they normally screech and wail."........... Update: Using continuity tester I could not find anything however when I then `plugged` the mains lead in (at the monitor end only) when wiggled as this gave a bit more leverage then the continuity was intermittently broken, this only appears to happen on the live wire connection so hopefully I am getting to the source of the problem. I also tried a second lead and the same result. I still cant see any `movement` but it does point to one of two connections. Hopefully tomorrow I can confirm which one and attempt a fix. |
#35
Posted to uk.d-i-y
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Monitor/mains connection
On Wed, 18 Oct 2017 22:38:32 +0100, ss wrote:
snip Update: Using continuity tester I could not find anything however when I then `plugged` the mains lead in (at the monitor end only) when wiggled as this gave a bit more leverage then the continuity was intermittently broken, Where was the meter connected at this point, the live pin on the mains plug and somewhere on the live connection on the PCB (presumably). this only appears to happen on the live wire connection so hopefully I am getting to the source of the problem. I also tried a second lead and the same result. I still cant see any `movement` but it does point to one of two connections. Hopefully tomorrow I can confirm which one and attempt a fix. I would then,with one end of your meter on the live pin of the plug, first touch the back of the (live) pin where it comes out of the back of the socket and wiggle, and then the metal that carries that live down to the PCB, than the PCB ('in' end of the fuse etc) and wiggle again. Assuming it's not two bad leads, chances are it's where the live pin in the IEC socket is peened over that is the problem. To pin it down further you could do the same exercise but with the lead clipped to some pointed nose pliers whilst you use them to wiggle the pin etc? Cheers, T i m |
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