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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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Ion it USB turntable
Got this thing in for repair. It has no output from either the RCA
cables on line or phono out or the USB out. The interface board has a great deal of smt circuitry on it and I'm thinking that this is probably a waste of time but I had to ask. Anyone ever worked on one of these? Thanks, Lenny |
#2
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Ion it USB turntable
"klem kedidelhopper" wrote in message ... Got this thing in for repair. It has no output from either the RCA cables on line or phono out or the USB out. The interface board has a great deal of smt circuitry on it and I'm thinking that this is probably a waste of time but I had to ask. Anyone ever worked on one of these? Thanks, Lenny My method would be first to measure the power supplies at the smt op-amp pins to make sure they are there. Second to make sure there is an output from the cartridge to the circuitry - inject a signal into the circuitry to check this, or just your finger to make a buzz. If none of the above you are indeed probably wasting your time. Gareth. |
#3
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Ion it USB turntable
On Nov 16, 5:17*pm, "Gareth Magennis"
wrote: "klem kedidelhopper" wrote in message ... Got this thing in for repair. It has no output from either the RCA cables on line or phono out or the USB out. The interface board has a great deal of smt circuitry on it and I'm thinking that this is probably a waste of time but I had to ask. Anyone ever worked on one of these? Thanks, Lenny My method would be first to measure the power supplies at the smt op-amp pins to make sure they are there. Second to make sure there is an output from the cartridge to the circuitry - inject a signal into the circuitry to check this, or just your finger to make a buzz. If none of the above you are indeed probably wasting your time. Gareth. The power supply appears to be working. I'm not certain its putting out the correct voltages, but I'll look at it again. I have a feeling though that this pos is just another throw away. Thanks, Lenny |
#4
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Ion it USB turntable
"klem kedidelhopper" wrote in message ... On Nov 16, 5:17 pm, "Gareth Magennis" wrote: "klem kedidelhopper" wrote in message ... Got this thing in for repair. It has no output from either the RCA cables on line or phono out or the USB out. The interface board has a great deal of smt circuitry on it and I'm thinking that this is probably a waste of time but I had to ask. Anyone ever worked on one of these? Thanks, Lenny My method would be first to measure the power supplies at the smt op-amp pins to make sure they are there. Second to make sure there is an output from the cartridge to the circuitry - inject a signal into the circuitry to check this, or just your finger to make a buzz. If none of the above you are indeed probably wasting your time. Gareth. The power supply appears to be working. I'm not certain its putting out the correct voltages, but I'll look at it again. I have a feeling though that this pos is just another throw away. Thanks, Lenny Yes, power supply is a likely candidate - find the regulators for the digital stuff, there may be 2 or 3 different voltages required, unlike the old days when everything ran off 5v. Gareth. |
#5
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Ion it USB turntable
On Nov 16, 10:07*pm, klem kedidelhopper
wrote: Got this thing in for repair. It has no output from either the RCA cables on line or phono out or the USB out. The interface board has a great deal of smt circuitry on it and I'm thinking that this is probably a waste of time but I had to ask. Anyone ever worked on one of these? Thanks, Lenny If all else fails, bypass the circuitry and just wire the cartridge up to the RCA output sockets, then you can use the deck like a 'normal 'TT with any amp having a Phono input. -b |
#6
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Ion it USB turntable
On Nov 17, 6:03*pm, b wrote:
On Nov 16, 10:07*pm, klem kedidelhopper wrote: Got this thing in for repair. It has no output from either the RCA cables on line or phono out or the USB out. The interface board has a great deal of smt circuitry on it and I'm thinking that this is probably a waste of time but I had to ask. Anyone ever worked on one of these? Thanks, Lenny If all else fails, bypass the circuitry and just wire the cartridge up to the RCA output sockets, then you can use the deck like a 'normal 'TT with any amp having a Phono input. -b I would do it if it was mine but I don't think the customer has a stereo system. Lenny |
#7
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Ion it USB turntable
If all else fails, bypass the circuitry and just wire the cartridge up
to the RCA output sockets, then you can use the deck like a 'normal 'TT with any amp having a Phono input. This unit probably has a ceramic pickup. If so, that won't work. |
#8
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Ion it USB turntable
On Thu, 17 Nov 2011 15:50:30 -0800 (PST), klem kedidelhopper
wrote: On Nov 17, 6:03*pm, b wrote: On Nov 16, 10:07*pm, klem kedidelhopper wrote: Got this thing in for repair. It has no output from either the RCA cables on line or phono out or the USB out. The interface board has a great deal of smt circuitry on it and I'm thinking that this is probably a waste of time but I had to ask. Anyone ever worked on one of these? Thanks, Lenny If all else fails, bypass the circuitry and just wire the cartridge up to the RCA output sockets, then you can use the deck like a 'normal 'TT with any amp having a Phono input. -b I would do it if it was mine but I don't think the customer has a stereo system. Lenny If they are making MP3s from vinyl they must have a computer to copy the MP3s to a MP3 player. It will have an audio input and sound recorder app. So only need a codec to save the recorded input as an MP3. (which they probably already have) -- Peter Hill Spamtrap reply domain as per NNTP-Posting-Host in header Can of worms - what every fisherman wants. Can of worms - what every PC owner gets! |
#9
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Ion it USB turntable
On Wed, 16 Nov 2011 13:07:05 -0800 (PST), klem kedidelhopper
wrote: Got this thing in for repair. It has no output from either the RCA cables on line or phono out or the USB out. The interface board has a great deal of smt circuitry on it and I'm thinking that this is probably a waste of time but I had to ask. Anyone ever worked on one of these? Thanks, Lenny Not sure it's worth the effort to repair. You can get a USB turntable for $35US plus shipping: http://www.geeks.com/details.asp?InvtId=VS-2002-SPK |
#10
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Ion it USB turntable
On Nov 18, 1:47*pm, wrote:
On Wed, 16 Nov 2011 13:07:05 -0800 (PST), klem kedidelhopper wrote: Got this thing in for repair. It has no output from either the RCA cables on line or phono out or the USB out. The interface board has a great deal of smt circuitry on it and I'm thinking that this is probably a waste of time but I had to ask. Anyone ever worked on one of these? Thanks, Lenny Not sure it's worth the effort to repair. *You can get a USB turntable for $35US plus shipping: http://www.geeks.com/details.asp?InvtId=VS-2002-SPK I copy my albums to cassette. With my hearing I'd never realize any benefit going to the computer. If I was personally interested in copying my LP's to digital though I don't think I'd buy one of these cheapie turntables in the first place. In my opinion you're just asking to have your records ruined. Rather to preserve my records, I would want to use my nice Thorens turntable with a magnetic cartridge that tracks at less than a gram, with with anti skating, etc along with some kind of an analog to digital converter. There must be some type of "black box" converter that will take either an RIAA phono signal direct from the cartridge, or a line level signal perhaps from the tape out of an amp and convert it to digital. Lenny |
#11
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Ion it USB turntable
"klem kedidelhopper"
wrote in message ... I copy my albums to cassette. With my hearing I'd never realize any benefit going to the computer. If I was personally interested in copying my LP's to digital though I don't think I'd buy one of these cheapie turntables in the first place. In my opinion you're just asking to have your records ruined. Rather to preserve my records, I would want to use my nice Thorens turntable with a magnetic cartridge that tracks at less than a gram, with with anti skating, etc along with some kind of an analog to digital converter. There must be some type of "black box" converter that will take either an RIAA phono signal direct from the cartridge, or a line level signal perhaps from the tape out of an amp and convert it to digital. Try this. http://www.parasound.com/ParasoundZ/zphonoUSB.php Disclaimer: Except for my Vendetta head amp, my tuner, controller, and power amps are Parasound. I'm very friendly with the company, and John Curl, who designed my head amp and power amps. I have no hesitation recommending Parasound products. |
#12
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Ion it USB turntable
"William Sommerwerck" wrote in message ... "klem kedidelhopper" wrote in message ... I copy my albums to cassette. With my hearing I'd never realize any benefit going to the computer. If I was personally interested in copying my LP's to digital though I don't think I'd buy one of these cheapie turntables in the first place. In my opinion you're just asking to have your records ruined. Rather to preserve my records, I would want to use my nice Thorens turntable with a magnetic cartridge that tracks at less than a gram, with with anti skating, etc along with some kind of an analog to digital converter. There must be some type of "black box" converter that will take either an RIAA phono signal direct from the cartridge, or a line level signal perhaps from the tape out of an amp and convert it to digital. Try this. http://www.parasound.com/ParasoundZ/zphonoUSB.php Or perhaps this if the Parasound is a little O.T.T. http://www.studiospares.com/audio-in...FUEb4QodOniRpg Gareth. |
#13
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Ion it USB turntable
"Nelson" wrote in message
.com... On Sat, 19 Nov 2011 09:58:54 -0500, klem kedidelhopper wrote (in article ): In my opinion you're just asking to have your records ruined. You know, I see that comment all the time and I wonder what the basis for it is. I know about the tracking pressure, how good the needle is, etc. But you are just playing it _once_ for crikey's sake. And if you are converting them to digital, you probably don't have any more use for the vinyl, anyway. Which is all the more reason for making a really good transfer. Record damage or not, a cheap ceramic pickup is not going to give the sound quality of a decent magnetic pickup. The catch, of course, is that a good 'table, pickup, preamp, ADC, etc, aren't cheap. |
#14
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Ion it USB turntable
On Sat, 19 Nov 2011 16:34:37 -0000, "Gareth Magennis"
wrote: "William Sommerwerck" wrote in message ... "klem kedidelhopper" wrote in message ... I copy my albums to cassette. With my hearing I'd never realize any benefit going to the computer. If I was personally interested in copying my LP's to digital though I don't think I'd buy one of these cheapie turntables in the first place. In my opinion you're just asking to have your records ruined. Rather to preserve my records, I would want to use my nice Thorens turntable with a magnetic cartridge that tracks at less than a gram, with with anti skating, etc along with some kind of an analog to digital converter. There must be some type of "black box" converter that will take either an RIAA phono signal direct from the cartridge, or a line level signal perhaps from the tape out of an amp and convert it to digital. Try this. http://www.parasound.com/ParasoundZ/zphonoUSB.php Or perhaps this if the Parasound is a little O.T.T. http://www.studiospares.com/audio-in...FUEb4QodOniRpg Gareth. That's expensive. OK it's got a pre-amp so you don't have to use line and an output (like what computer with USB doesn't have sound built in?) but I think it's the copy of Audacity vinyl restoration that costs. Video + audio capture £4.60. http://www.amazon.co.uk/gp/product/B...19JPPGH9MN8D3F Anyone know of freeware click remover etc? -- Peter Hill Spamtrap reply domain as per NNTP-Posting-Host in header Can of worms - what every fisherman wants. Can of worms - what every PC owner gets! |
#15
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Ion it USB turntable
"Peter Hill" wrote in message ... On Sat, 19 Nov 2011 16:34:37 -0000, "Gareth Magennis" wrote: "William Sommerwerck" wrote in message ... "klem kedidelhopper" wrote in message ... I copy my albums to cassette. With my hearing I'd never realize any benefit going to the computer. If I was personally interested in copying my LP's to digital though I don't think I'd buy one of these cheapie turntables in the first place. In my opinion you're just asking to have your records ruined. Rather to preserve my records, I would want to use my nice Thorens turntable with a magnetic cartridge that tracks at less than a gram, with with anti skating, etc along with some kind of an analog to digital converter. There must be some type of "black box" converter that will take either an RIAA phono signal direct from the cartridge, or a line level signal perhaps from the tape out of an amp and convert it to digital. Try this. http://www.parasound.com/ParasoundZ/zphonoUSB.php Or perhaps this if the Parasound is a little O.T.T. http://www.studiospares.com/audio-in...FUEb4QodOniRpg Gareth. That's expensive. OK it's got a pre-amp so you don't have to use line and an output (like what computer with USB doesn't have sound built in?) but I think it's the copy of Audacity vinyl restoration that costs. Video + audio capture £4.60. http://www.amazon.co.uk/gp/product/B...19JPPGH9MN8D3F As far as I can tell, that Amazon unit is not a phono pre-amp, it is a line amp, and will not work at all well with a turntable. Gareth. |
#16
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Ion it USB turntable
Peter Hill wrote: Anyone know of freeware click remover etc? Older versions of 'Cool Edit', from before Adobe bought it. -- You can't have a sense of humor, if you have no sense. |
#17
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Ion it USB turntable
On Fri, 18 Nov 2011 08:03:15 +0000, Peter Hill
wrote: On Thu, 17 Nov 2011 15:50:30 -0800 (PST), klem kedidelhopper wrote: On Nov 17, 6:03*pm, b wrote: On Nov 16, 10:07*pm, klem kedidelhopper wrote: Got this thing in for repair. It has no output from either the RCA cables on line or phono out or the USB out. The interface board has a great deal of smt circuitry on it and I'm thinking that this is probably a waste of time but I had to ask. Anyone ever worked on one of these? Thanks, Lenny If all else fails, bypass the circuitry and just wire the cartridge up to the RCA output sockets, then you can use the deck like a 'normal 'TT with any amp having a Phono input. -b I would do it if it was mine but I don't think the customer has a stereo system. Lenny If they are making MP3s from vinyl they must have a computer to copy the MP3s to a MP3 player. It will have an audio input and sound recorder app. So only need a codec to save the recorded input as an MP3. (which they probably already have) It is likely not to be mp3 coming down the USB but wav, raw 16 bit 44.1 kHz sampling, the rest done on the PC. ?-) |
#18
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Ion it USB turntable
On Thu, 17 Nov 2011 18:05:35 -0800, "William Sommerwerck"
wrote: If all else fails, bypass the circuitry and just wire the cartridge up to the RCA output sockets, then you can use the deck like a 'normal 'TT with any amp having a Phono input. This unit probably has a ceramic pickup. If so, that won't work. Really? Has anybody made those in the past 50 years? ?-) |
#19
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Ion it USB turntable
On Sat, 19 Nov 2011 06:58:54 -0800 (PST), klem kedidelhopper
wrote: On Nov 18, 1:47*pm, wrote: On Wed, 16 Nov 2011 13:07:05 -0800 (PST), klem kedidelhopper wrote: Got this thing in for repair. It has no output from either the RCA cables on line or phono out or the USB out. The interface board has a great deal of smt circuitry on it and I'm thinking that this is probably a waste of time but I had to ask. Anyone ever worked on one of these? Thanks, Lenny Not sure it's worth the effort to repair. *You can get a USB turntable for $35US plus shipping: http://www.geeks.com/details.asp?InvtId=VS-2002-SPK I copy my albums to cassette. With my hearing I'd never realize any benefit going to the computer. If I was personally interested in copying my LP's to digital though I don't think I'd buy one of these cheapie turntables in the first place. In my opinion you're just asking to have your records ruined. Rather to preserve my records, I would want to use my nice Thorens turntable with a magnetic cartridge that tracks at less than a gram, with with anti skating, etc along with some kind of an analog to digital converter. There must be some type of "black box" converter that will take either an RIAA phono signal direct from the cartridge, or a line level signal perhaps from the tape out of an amp and convert it to digital. Lenny Both forms are readily available in a wide variety of price and in quality (which do not track). ?-) |
#20
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Ion it USB turntable
On Sat, 19 Nov 2011 14:42:33 -0500, Nelson wrote:
On Sat, 19 Nov 2011 09:58:54 -0500, klem kedidelhopper wrote (in article ): In my opinion you're just asking to have your records ruined. You know, I see that comment all the time and I wonder what the basis for it is. I know about the tracking pressure, how good the needle is, etc. But you are just playing it _once_ for crikey's sake. And, if you are converting them to digital, you probably don't have an more use for the vinyl anyway. Pretty much true, but there is always resale value. Original vinyl in very good condition gets a much better price. And sometimes i have to do a second capture due to a gonk or other problem in the first one. Decent equipment always does the job better than crap. ?-) |
#21
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Ion it USB turntable
josephkk wrote:
Pretty much true, but there is always resale value. Original vinyl in very good condition gets a much better price. And sometimes i have to do a second capture due to a gonk or other problem in the first one. Decent equipment always does the job better than crap. About 10 years ago a gradute student did a project (I assume for a master's thesis) where he developed software to "read" the music from a disk by scanning it using a desktop scanner and processing the raw scanned file. From what I remember researching it a few years ago, it never went any farther. IMHO it would bear revisiting because of the improved scanners we have today (although there are very few ones that can accomodate a 12 inch LP) and the improved computers. There also has been more research in such things, but not this one application. Considering that even with good equipment there is a small amount of wear caused by the stylus reading the disk and an optical scanner causes none, one could scan the disk 10 or even 100 times and combine them to improve accuracy. Geoff. -- Geoffrey S. Mendelson, N3OWJ/4X1GM My high blood pressure medicine reduces my midichlorian count. :-( |
#22
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Ion it USB turntable
"josephkk" wrote in message
... On Thu, 17 Nov 2011 18:05:35 -0800, "William Sommerwerck" wrote: If all else fails, bypass the circuitry and just wire the cartridge up to the RCA output sockets, then you can use the deck like a 'normal 'TT with any amp having a Phono input. This unit probably has a ceramic pickup. If so, that won't work. Really? Has anybody made those in the past 50 years? 99% of all stereo consoles used ceramic pickups. Almost all USB turntables use ceramic pickups. |
#23
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Ion it USB turntable
On Sat, 19 Nov 2011 06:58:54 -0800 (PST), klem kedidelhopper
wrote: On Nov 18, 1:47*pm, wrote: On Wed, 16 Nov 2011 13:07:05 -0800 (PST), klem kedidelhopper wrote: Got this thing in for repair. It has no output from either the RCA cables on line or phono out or the USB out. The interface board has a great deal of smt circuitry on it and I'm thinking that this is probably a waste of time but I had to ask. Anyone ever worked on one of these? Thanks, Lenny Not sure it's worth the effort to repair. *You can get a USB turntable for $35US plus shipping: http://www.geeks.com/details.asp?InvtId=VS-2002-SPK I copy my albums to cassette. With my hearing I'd never realize any benefit going to the computer. If I was personally interested in copying my LP's to digital though I don't think I'd buy one of these cheapie turntables in the first place. In my opinion you're just asking to have your records ruined. Rather to preserve my records, I would want to use my nice Thorens turntable with a magnetic cartridge that tracks at less than a gram, with with anti skating, etc along with some kind of an analog to digital converter. There must be some type of "black box" converter that will take either an RIAA phono signal direct from the cartridge, or a line level signal perhaps from the tape out of an amp and convert it to digital. Lenny It is usually better to track at above 1 gram. I have found that setting tracking to less than a gram damages a record more than using a higher setting. (The stylus has a tendency to lose contact with the record and when the stylus lands it gouges out pieces of vinyl.) Chuck |
#24
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Ion it USB turntable
On Sat, 19 Nov 2011 20:48:48 +0000, Peter Hill
wrote: On Sat, 19 Nov 2011 16:34:37 -0000, "Gareth Magennis" wrote: "William Sommerwerck" wrote in message ... "klem kedidelhopper" wrote in message ... I copy my albums to cassette. With my hearing I'd never realize any benefit going to the computer. If I was personally interested in copying my LP's to digital though I don't think I'd buy one of these cheapie turntables in the first place. In my opinion you're just asking to have your records ruined. Rather to preserve my records, I would want to use my nice Thorens turntable with a magnetic cartridge that tracks at less than a gram, with with anti skating, etc along with some kind of an analog to digital converter. There must be some type of "black box" converter that will take either an RIAA phono signal direct from the cartridge, or a line level signal perhaps from the tape out of an amp and convert it to digital. Try this. http://www.parasound.com/ParasoundZ/zphonoUSB.php Or perhaps this if the Parasound is a little O.T.T. http://www.studiospares.com/audio-in...FUEb4QodOniRpg Gareth. That's expensive. OK it's got a pre-amp so you don't have to use line and an output (like what computer with USB doesn't have sound built in?) but I think it's the copy of Audacity vinyl restoration that costs. Audacity as i know it, comes free with Linux. Which one are you talking about? Video + audio capture £4.60. http://www.amazon.co.uk/gp/product/B...19JPPGH9MN8D3F Anyone know of freeware click remover etc? |
#25
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Ion it USB turntable
"William Sommerwerck" wrote in message
... "josephkk" wrote in message ... On Thu, 17 Nov 2011 18:05:35 -0800, "William Sommerwerck" wrote: If all else fails, bypass the circuitry and just wire the cartridge up to the RCA output sockets, then you can use the deck like a 'normal 'TT with any amp having a Phono input. This unit probably has a ceramic pickup. If so, that won't work. Really? Has anybody made those in the past 50 years? 99% of all stereo consoles used ceramic pickups. Almost all USB turntables use ceramic pickups. There is no need for a preamp if it's ceramic, even if the cartridge output goes into a built-in DAC. If there's a switch for a built-in phono preamp, it's a magnetic cartridge. I've seen a lot of Audio Technica (or clone) cheapies used for this, but I've not seen the Ion. Problem is, the newer plastic tables are utter crap, even to the point of resonating audibly as the record plays. My recomendation is to refurbish an older (REAL) turntable and run it through a USB preamp, but I realize that these days, many people are simply wanting a simple, "Plug-n-Play" solution. Mark Z. |
#26
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Ion it USB turntable
On Nov 21, 7:19*pm, chuck wrote:
* It is usually better to track at above 1 gram. ....or even better, track at the cartridge manufacturer's recommended weight! The specs for most carts are available online. Most magnetic carts track somewhere between 1-5 - 3.5g. The damage caused by tracking weight set too low comes from the tip rattling about in the upper part of the 'groove' and bouncing off the groove walls, instead of following a proper path in good contact with each side. -B |
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