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Yamaha CDX-1030 Skips

Raccoon1400

Raccoon1400

Super Member
I'm working on a yamaha CDX-1030. It skips. It does it more toward the end of the record. I cleaned and lubed the rails with sewing machine oil and that might have helped a bit. Sometimes it would skip backwards, sometimes now it skips forwards. And sometimes it stops before the end of the disc. (Also I had to replace the drawer belt to get it to play at all)

What do you guys clean laser lenses with? dr*audio said to use ethanol but I can't find pure ethanol around here. I haven't done any damage with rubbing alcohol yet I don't think.

I read dr*audio's post in DIY on CD players, and this link:
http://lampizator.eu/LAMPIZATOR/TRANSPORT/laser/Laserology.html

I'm not sure what to try next. I'm an experienced tech (at least with receivers and turntables) but I haven't gotten far with CD players with disc reading issues.
 
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I always used a cleaning CD to clean the lens. It has a brush that cleans off the Lens they work quiet well.

Here is am an example.
2154D0F6-1A0D-4DC9-B02A-FB8E2E4528B9.png
 
transmaster said:
I always used a cleaning CD to clean the lens. It has a brush that cleans off the Lens they work quiet well.

Here is am an example.
Click to expand...
I have one of those. On this player I tried blowing the dust off with a squeeze ball that is for cleaning camera lenses.
 
Vodka works fine. Or you can use Kodak Lens Cleaner. Did you oil the disc motor top bearing?
 
dr*audio said:
Yep. It's for cleaning photographic lenses, it's safe to use. Photographic lenses have coatings on them and anything that is meant to clean them without damaging the coating is safe to use on any lens.
You don't have to get it from Amazon, go to a camera store and ask for lens cleaner.
Click to expand...
I found some cleaner but it doesn't seem to be helping. What else should I check?
 
Lubricate the top bearing on the disc motor with light machine oil. Also look at the rf test point on a scope. If the rf waveform gets lower as it plays, the laser is kaput.
 
Had the same issue with my CDX1030 - look at the solder points connectiing the 'heat sinked' transistors to the mainboard, these had ring cracks on my machine, reflowing the solders was the fix.
 
Raccoon1400 said:
dr*audio said to use ethanol but I can't find pure ethanol around here.
Click to expand...
220px-EverclearHiRes.jpg
 
timblade68 said:
Had the same issue with my CDX1030 - look at the solder points connectiing the 'heat sinked' transistors to the mainboard, these had ring cracks on my machine, reflowing the solders was the fix.
Click to expand...
I'll check that.
dr*audio said:
See the service manual.
Click to expand...
Is it the one labeled EFM? Screenshot below. It comes out of the RF amp.
avionic said:
Everclear
Click to expand...
Can't buy that in Ontario but I think I can get something that strong across the bridge in Quebec.
https://www.saq.com/page/en/saqcom/alcohol/global-94-/90076
They must make it for cleaning CD lenses, I can't imagine drinking it. I have bad enough memories from vodka.
 

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dr*audio said:
See the service manual.
Click to expand...
I tried putting the scope at the EFM test point I mentioned in the previous message. I'm not sure if it is the right point, but the waveform is stable as it plays
timblade68 said:
Had the same issue with my CDX1030 - look at the solder points connectiing the 'heat sinked' transistors to the mainboard, these had ring cracks on my machine, reflowing the solders was the fix.
Click to expand...
I just did some touchup but it still skips.
. Here's a picture.
 

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