Cambridge 640C V2 Thumps When Disc Ejected - diyAudio
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Old 21st October 2010, 07:11 PM   #1
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Default Cambridge 640C V2 Thumps When Disc Ejected

Hi all. I have a Cambridge 640C V2 CD player that causes a relatively loud thump through the speakers when ejecting a disc that has been playing for a while. It sounds like DC offset so I'm wondering if this might be a static problem although it occur throughout the summer. I'm thinking static because the disc has to be playing for a while. Any suggestions to solve this problem would be appreciated.

Last edited by Monjul; 21st October 2010 at 07:13 PM.
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Old 24th October 2010, 01:41 PM   #2
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No one?
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Old 24th October 2010, 02:15 PM   #3
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It might be the mute circuit. Does it "thump" in both channels?
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Old 25th October 2010, 11:38 AM   #4
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Yes, it thumps in both channels. Should I pursue having this repaired? If I do, maybe I'll have the player upgraded/modified also. Are mods to this unit recommended?
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Old 25th October 2010, 09:00 PM   #5
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Just adding comment here as a matter of interest.

I bought a 340 a few years back and that had the same problem.

I took it back to Richer Sounds where it was exhanged, so I don't know what was wrong with it..


What I can say is that the fault is most likely on the servo board and not the DAC / Audio board, simply because the servo board is a common component to all three models. Audio output is in fact derived from this servo board on the 340 too.

Hope this is of some help.
Visit the Vintage Technics Website - recently upgraded! The cd player daclist site has been upgraded too. (being unemployed leaves one with plenty of spare time..!)
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