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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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CD player whine ... how big and costly a fix?
I have a four-year old AIWA JAX-S5 stereo (3-cd changer, 2 cassetes, radio,
about a $150 unit). I have started getting a distinct whine with most every CD I try to play. It seems to be particularly bad with CDs that seem to be a bit lighter in weight than normal (which is a lot of them lately). It is particularly bad, to the point of causing read errors, on the first three or four tracks of a CD. On the later tracks, the whine doesn't appear. I've done some homework online and it appears this is a resonance problem, and there is a particular problem with a particular Sony optical pickup. I'm not sure this is that unit, but being that Sony=AIWA at that point in time, and I'm getting the symptoms that have been common to that pickup, circumstantial evidence tells me it's likely to be that pickup. I know there were Sony service updates put out about this problem detailing the fix of putting a brass washer on the pickup and a felt pad on the bottom of the top clamp assembly. That sounds simple enough to do, except that I'm rather unmechanical and don't have a clue what to do, which means taking it to a tech. I'm not a cheapskate and am willing to pay a tech for good work ... a couple of years ago I spent WAY more than the thing was worth to get a tech to do repairs on my first CD player, a Magnavox boombox that was made in Germany 20 years ago, because it was worth it to me ... and I'm willing to spend a bit to get this fixed if it's not an arm and a leg. The thing is, though, I've disliked this stereo since I got it and unless it's going to be a cheap and quick fix, I'm almost inclined to ditch it and get something else. I'm also concerned about being able to get the Sony parts to fix this, since it seems like it's been a while since that service update was put out and this unit is relatively old. So, what am I looking at here? Thanks in advance for any help. |
#2
Posted to sci.electronics.repair
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CD player whine ... how big and costly a fix?
Greg Bailey wrote in message
. .. I have a four-year old AIWA JAX-S5 stereo (3-cd changer, 2 cassetes, radio, about a $150 unit). I have started getting a distinct whine with most every CD I try to play. It seems to be particularly bad with CDs that seem to be a bit lighter in weight than normal (which is a lot of them lately). It is particularly bad, to the point of causing read errors, on the first three or four tracks of a CD. On the later tracks, the whine doesn't appear. I've done some homework online and it appears this is a resonance problem, and there is a particular problem with a particular Sony optical pickup. I'm not sure this is that unit, but being that Sony=AIWA at that point in time, and I'm getting the symptoms that have been common to that pickup, circumstantial evidence tells me it's likely to be that pickup. I know there were Sony service updates put out about this problem detailing the fix of putting a brass washer on the pickup and a felt pad on the bottom of the top clamp assembly. That sounds simple enough to do, except that I'm rather unmechanical and don't have a clue what to do, which means taking it to a tech. I'm not a cheapskate and am willing to pay a tech for good work ... a couple of years ago I spent WAY more than the thing was worth to get a tech to do repairs on my first CD player, a Magnavox boombox that was made in Germany 20 years ago, because it was worth it to me ... and I'm willing to spend a bit to get this fixed if it's not an arm and a leg. The thing is, though, I've disliked this stereo since I got it and unless it's going to be a cheap and quick fix, I'm almost inclined to ditch it and get something else. I'm also concerned about being able to get the Sony parts to fix this, since it seems like it's been a while since that service update was put out and this unit is relatively old. So, what am I looking at here? Thanks in advance for any help. My guess would be a worn spinner motor bearing. Try adding a weight to the top clamp/closer , initially , to see if it makes a difference to when the squeal occurs -- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on http://home.graffiti.net/diverse:graffiti.net/ |
#3
Posted to sci.electronics.repair
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CD player whine ... how big and costly a fix?
"Greg Bailey" wrote in message . .. I have a four-year old AIWA JAX-S5 stereo (3-cd changer, 2 cassetes, radio, about a $150 unit). I have started getting a distinct whine with most every CD I try to play. It seems to be particularly bad with CDs that seem to be a bit lighter in weight than normal (which is a lot of them lately). It is particularly bad, to the point of causing read errors, on the first three or four tracks of a CD. On the later tracks, the whine doesn't appear. I've done some homework online and it appears this is a resonance problem, and there is a particular problem with a particular Sony optical pickup. I'm not sure this is that unit, but being that Sony=AIWA at that point in time, and I'm getting the symptoms that have been common to that pickup, circumstantial evidence tells me it's likely to be that pickup. I know there were Sony service updates put out about this problem detailing the fix of putting a brass washer on the pickup and a felt pad on the bottom of the top clamp assembly. That sounds simple enough to do, except that I'm rather unmechanical and don't have a clue what to do, which means taking it to a tech. I'm not a cheapskate and am willing to pay a tech for good work ... a couple of years ago I spent WAY more than the thing was worth to get a tech to do repairs on my first CD player, a Magnavox boombox that was made in Germany 20 years ago, because it was worth it to me ... and I'm willing to spend a bit to get this fixed if it's not an arm and a leg. The thing is, though, I've disliked this stereo since I got it and unless it's going to be a cheap and quick fix, I'm almost inclined to ditch it and get something else. I'm also concerned about being able to get the Sony parts to fix this, since it seems like it's been a while since that service update was put out and this unit is relatively old. So, what am I looking at here? Thanks in advance for any help. Before doing anything else at all, clean the laser. These Aiwa 3 disc units have got to be the worst example ever of a laser that gets really really dusty. It is because the CD deck is located right over the power supply and output stages, and the heat convection currents carry the dust up inside, round over the deck, and then deposit it all over the upper surface of the changer. I used to do a lot of work for a chain store here in the UK that sold all variants of these units by the thousand, and over the years, I have lost count of how many I have seen with extremely dusty lasers, causing all manner of problems, including noisy play. Sometimes - 30-50% maybe - you have to replace the laser, as enough dust has got inside the optics to continue to cause trouble. Whilst your problem may not be one of dust, just try giving it a clean first. It might just clear up its troubles ... Arfa |
#4
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CD player whine ... how big and costly a fix?
Have u read on the internet about "urine therapy", 135,000 web-pages
on google. Basically it involves drinking/using your own pee/urine. I have got lots of cures for myself through it and my genetic/ inherited disease "manic-depression" is reversing as my medicines are SLOWLY coming down. Erach On Feb 13, 1:26 am, "Greg Bailey" wrote: I have a four-year old AIWA JAX-S5 stereo (3-cd changer, 2 cassetes, radio, about a $150 unit). I have started getting a distinct whine with most every CD I try to play. It seems to be particularly bad with CDs that seem to be a bit lighter in weight than normal (which is a lot of them lately). It is particularly bad, to the point of causing read errors, on the first three or four tracks of a CD. On the later tracks, the whine doesn't appear. I've done some homework online and it appears this is a resonance problem, and there is a particular problem with a particular Sony optical pickup. I'm not sure this is that unit, but being that Sony=AIWA at that point in time, and I'm getting the symptoms that have been common to that pickup, circumstantial evidence tells me it's likely to be that pickup. I know there were Sony service updates put out about this problem detailing the fix of putting a brass washer on the pickup and a felt pad on the bottom of the top clamp assembly. That sounds simple enough to do, except that I'm rather unmechanical and don't have a clue what to do, which means taking it to a tech. I'm not a cheapskate and am willing to pay a tech for good work ... a couple of years ago I spent WAY more than the thing was worth to get a tech to do repairs on my first CD player, a Magnavox boombox that was made in Germany 20 years ago, because it was worth it to me ... and I'm willing to spend a bit to get this fixed if it's not an arm and a leg. The thing is, though, I've disliked this stereo since I got it and unless it's going to be a cheap and quick fix, I'm almost inclined to ditch it and get something else. I'm also concerned about being able to get the Sony parts to fix this, since it seems like it's been a while since that service update was put out and this unit is relatively old. So, what am I looking at here? Thanks in advance for any help. |
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