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Old 4th November 2005, 09:06 PM   #1
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Default crackling sound CDM 4

I have a problem with my CD player. It is a CDM4/31 type mounted in B&O Beocenter 8000.

It plays perfectly for apporx. 30 minutes. After that the sound distorts and crackling sound occurs.

Does anyboy have an idea wht the problem can be?


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Old 4th November 2005, 09:26 PM   #2
karma is offline karma  Canada
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run the cd player with the lid off and run it to see if it runs longer.
rule out a ic overheating or failing when it warms up.

voltage regulator?
bad caps?

its a start

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Old 5th November 2005, 11:22 AM   #3
hacknet is offline hacknet  Singapore
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i had problems like that with my cdm4 when the lens got dirty. try cleaning it with ipa or something like that...
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Old 8th November 2005, 06:27 AM   #4
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I have alreay cleaned the lens. It does not make any difference.

Karma: Are there any particular caps and IC's which go bad more often. I'm not an expert on these players, so your help is more then welcome.

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Old 8th November 2005, 07:06 AM   #5
Shaun is offline Shaun  South Africa
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Default Perhaps it needs replacing

If the crackling you hear can alternatively be described as distortion, then the likely case is that you need the laser replaced. My Rotel RCD-(something) did something similar. Replacing the laser assembly fixed it.
Shaun Onverwacht
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