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ARCHIVED FORUM -- March 2012 to February 2022

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


BeoGramCD 6500 with focus issue ??

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This post has 3 Replies | 2 Followers

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ALF Posted: Wed, Feb 23 2022 6:15 AM

Hi all,

i have been working on that CD player fir a while:

what started out as a possible Datalink issue seems to be a different issue.

the player plays a couple of CDs perfectly fine and suddenly won’t read another disc - starts to spin, 

and stops without reading the TOC.

i have been through the service mode procedure x times, set the focus offset as per manual, checked the

laser current - all fine…..well, for a couple of discs that is.

it looks like the focus offset is breaking down after having played some CDs in a row.

All elco caps on the servo board have been replaced - the famous blue axial philips cap has been replaced with its Vishay replacement.

the laser supply voltage is present.

suspicious solder joints have been reflown - the two big golden Roederstein caps from the power supply on board 5 have also been replaced.

i wonder if one of the ICs on the servo board have a problem ??

the laser is not dead but my main suspect is the focus offset setting - something seem to break down ?!

at the end as usual: any inputs, suggestions or solutions are desperately needed here.

thank you 


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59269 Beckum, Germany
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ProGram replied on Wed, Feb 23 2022 8:15 AM
I’ve had a strange focus issue, too. Take a very close look at the laser lens. The neodymium magnets may have developed some needles which fills the magnetic gap.

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ALF replied on Wed, Feb 23 2022 9:59 AM

Thank you for your input,

however that doesn’t seem to be my issue - after closest examination of the lens I could not detect any of those deposits ☹️

i did a run and checked all voltages again - present 👍 

pushing in the unloaded tray gets the laser in and I can see up/down movement, indicating it tries to focus…..but

exactly that up/down movement is not always present……….which could tell me there is a focus issue or do I interpret that wrongly ?

The two ICs involved with focus are IC6101 and IC6104 - the latter powering the focus motor, unless I read that wrong ?!

I still believe the problem has to be found on the servo board and not on the laser.

Remember, on a good stretch I can play 4 or 5 CDs without an issue.

still positive we can fix that 👍 with a little help from some friends


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Keith replied on Wed, Feb 23 2022 3:36 PM

I would order a caps kit from Martin, it has the proper cap for C2103. Any other won’t work.

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