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ARCHIVED FORUM -- March 2012 to February 2022
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This is the second Archived Forum which was active between 1st March 2012 and 23rd February 2022

 

Philips CD-chassis doesn't start

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This post has 3 Replies | 1 Follower

ProGram
Top 200 Contributor
59269 Beckum, Germany
Posts 383
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ProGram Posted: Sun, Aug 9 2015 6:56 PM

Hallo,

finally, I found the solution, why the CD-player in my Beogram CD6500 starts only few times, but most of the time not. This is so weird!

In nearly every post, it's said to change C2103. If it solves the problem - ok. But if you come to the conclusion that the Laser might be not ok, check the movability of the lens. It should move easily up and down like a speaker coil. I discovered on my deck, that the lens stuck right where it was moved using a pick. I thought of a misalignment of the coil and I decided to unscrew the bearing of the lens. Desoldered the flex-cable and loosened the one screw. Very easy! Inside I found metal dust or swarf around the gap. I could remove that using modeling clay. reassembled and soldered again, and: tada! WORKING!

The swarf came from the magnet itself, which decomposed at the edges. I tried to take pictures before and after cleaning.

Chris

Lee
Top 150 Contributor
Newcastle upon Tyne UK
Posts 734
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Lee replied on Sun, Aug 9 2015 7:34 PM
Great work. Wonder why the magnet is breaking down though...
ProGram
Top 200 Contributor
59269 Beckum, Germany
Posts 383
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ProGram replied on Mon, Aug 10 2015 5:47 PM

I think, these are neodym magnets. They can "corrode" very fast. 

Jeff
Top 25 Contributor
USA
Posts 3,793
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Jeff replied on Mon, Aug 10 2015 6:24 PM

I wonder if painting some clear lacquer or nail polish on the magnet would help seal it from further deterioration? 

Jeff

I'm afraid I'm recovering from the BeoVirus. Sad

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