The Workbench

Re: Beocenter 8000 cd-problem

guidovangool — Sun, 10 May 2009 06:09:12 GMT

If not yet solved, if the disc is spinning counterclockwise at lightspeed check T6314 on PCB 31. -9Volt. This is a SMD transistor on the back of the PCB. Servicemanual page 2-14.

Or get a secondhand Philips CD-Player with simmilar PCB's,

Re: Beocenter 8000 cd-problem

amr — Fri, 27 Feb 2009 17:42:27 GMT

I am working at home, but I have opportunity to do more advanced mesuring and component checks elsewhere. I found that two 10ohms resistors where out of specs, one of them was blown(burned). After reading around on this forum I found that this resistors worked as fuse for a transistorpair. I tested the two transistors and found that one in fact was not working. So I replaced it. But the problems are still the same... This is where I found the tips about changing the transistors: -->

http://forum.beoworld.org/forums/t/9684.aspx?PageIndex=2

PS I dont have any test cds, but I have an extra laser and engine from an old Philps cd player.

Re: Beocenter 8000 cd-problem

Dillen — Fri, 20 Feb 2009 07:36:20 GMT

First, do you have the right instruments, knowledge, skills and test CD's to service B&O CD decks or
are you working on the "kitchen table" ?

Replacing bad components is one thing. Finding out why they went bad is another.
What was wrong with the "out of spec" components and which components were they ?

Did you check laser current, focus control, radial balance and the presence of a clean catseye pattern ?

Martin

Re: Beocenter 8000 cd-problem

Dennis — Fri, 20 Feb 2009 07:23:29 GMT

Hi Amr

Try to clean the laser.

Best Regards

Loudspeaker

Re: Beocenter 8000 cd-problem

amr — Wed, 18 Feb 2009 06:01:57 GMT

Anybody? :)

Re: Beocenter 8000 cd-problem

amr — Tue, 10 Feb 2009 04:17:05 GMT

That is probably the best thing to do, but I like to try doing it myself. This is a hobby of mine. So if anybody has any suggestions about what to check out next, I am very happy for every answer...

Re: Beocenter 8000 cd-problem

Die_Bogener — Mon, 09 Feb 2009 14:26:06 GMT

Hmmmm, send the drive to Ulf ?

I'm sure he can cure the drive....

Beocenter 8000 cd-problem

amr — Mon, 09 Feb 2009 13:54:07 GMT

I hava a beocenter 8000 with a non-working cd-player. After a look around the forum I changed a couple of resistors and a transistor that messured out of range. Now the CD spins up and keeps spining at a speed near light:), after 3-4seconds the lid opens. Before doing any "repairs" the cd did maybe move for 3/4 of a round. Anybody who have a clue?