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Old 28th January 2011, 08:37 PM   #15511
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Quote:
Originally Posted by poynton View Post
If you have a cupboard full of old lasers, check out the threads on repairing them - worth a try.

Stripdown/Clean of CDM12.4

Seems a lot of working drives have been thrown away when all they require is cleaning on the underside of the lens.

You've got to have good eyesight and a steady hand though !


Andy



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Cheers Andy, I took your advice and although it is not really for an old drunk's shakin hands I was able to get four lasers working. I owe you a drink!
Regards Barry
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Old 3rd February 2011, 11:20 AM   #15512
UV101 is offline UV101  England
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I got a few kicking about too! worth a look me thinks! thanks
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Old 3rd February 2011, 06:11 PM   #15513
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Default Philips CD80 Flacky Problems

After the player is on for a few minutes if I change tracks or use the Random button I get the "ERROR" message. Have changed all of the electrolytics on the servo board and that made things a lot better but it is still a problem. Have also changed the bi-polar .68uf to poly at the same time that I upgraded the electrolytics on the servo boards. I have seen comments regarding grounding problems, but they were not specific as to which board or to specific components. Any recommendations would be appreciated.
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Old 3rd February 2011, 09:40 PM   #15514
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tried the strip and clean no avail fitted a new laser from china worked first time bit of soldering fired up all good
alan
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Old 4th February 2011, 03:14 PM   #15515
Cola is offline Cola  Singapore
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Hi Gurus

Pardon me for my super newbe question.

I have made lots of upgrade to my CD67 like changing the caps, opamp, diodes and clock. Recently after I have bypass the HDAM, output caps and cut off the headphone output as discussed here, my display refuses to light up even though the buttons are working fine. I have checked the voltage output from regulator 79M18 and it measure 0.6v. I have also trace all the way to the transformer and it measures 0.6v as well. I have also tried to replace the display board and still not working. What could be wrong here.

I would also like to know how to measure the output voltage and impedence of the CDP correctly. I have tried to stick in the DMM to the cold and hot output of the RCA and it measures 0.06v and 0.32v for the L & R channel respectively with the CDP playing. The output impedence was measure at close to 50 ohm and 150 ohm for the L & R channel repectively. Why is there such a wide discrepancy on measurement and there is no impact on the centre soundstage?
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Old 4th February 2011, 09:46 PM   #15516
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hi cola,
read earlier on in this post i think one of the other guys had the same problem 99% sure its something that you have removed
cheers alan
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Old 5th February 2011, 12:43 PM   #15517
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Michael, I wonder if you could have a laser tracking problem or grease on the sled. Sometimes they will play ok if left to run, but cause error if you try random or track change. Just a thought!
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Old 5th February 2011, 12:48 PM   #15518
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I notice almost every company are using these stupid gold plated sockets now. What a shame it is only the earth, that has a huge contact area and not the 'live' pin that has a small contact area that is gold plated!
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Old 6th February 2011, 07:31 AM   #15519
poynton is offline poynton  United Kingdom
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Quote:
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I notice almost every company are using these stupid gold plated sockets now. What a shame it is only the earth, that has a huge contact area and not the 'live' pin that has a small contact area that is gold plated!

Marketting !!!!!!!



Andy


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Old 6th February 2011, 10:47 AM   #15520
Cola is offline Cola  Singapore
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Quote:
Originally Posted by bikeral10 View Post
hi cola,
read earlier on in this post i think one of the other guys had the same problem 99% sure its something that you have removed
cheers alan
Hi I am the display light was on after the mod before I put back the casing. The earlier posts posted by the users is not similar to the problem i am having now as all the buttons are working.
Thanks
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