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Bizarre transport noise problem - only some CDs and only on the first track

67.175.5.50

Toshiba 9200. I know the 9200 has had a history of transport noise problems and that there's a damper add-on as a workaround, but I wonder if I have the exact same issue since it's only a problem on half of my CDs (and on those half that generate noise, it's only on the first and sometimes second/third track. Does this mean the laser pickup is physically vibrating against something only when it's reading the inner pits of a CD? But then why only some CDs? All CDs are clean and in good condition.

Any ideas?

Follow Ups:

RE: I have one of those - Jon L5 08:11:58 07/03/09 (1)
It has the same problem you describe. It would make noise sometimes and only with certain disks. The way I eventually solved it was to open up the box and loosen the screws in the top of the metal plate that covers the cd. I put the cover back on but left all the screws out of it. This loosens the chassis up a little and you can change the noise by putting something under one of the feet. I used to put short stacks of 10-15 notecards under one of the front feet and this would stop the noise. It took some experimenting but I got it to the point where it worked without noise. Every once in a while it would start up again and I'd shift something a little and it would be ok again.

It's a quirky player for sure but is really well built and sounds good. Mine saw heavy use for 7-8 years until it finally croaked on me last winter. I think it just needs a new motor because the discs don't start spinning unless you take the top off and give them a push.
- great suggestions, thanks! i'll give them a try. (nt) - givemevinyl 09:55:53 07/03/09 (0)
RE: Bizarre transport noise problem - only some CDs and only on the first track - Charles Hansen 22:01:38 07/02/09 (1)
CD's operate at a constant linear velocity, so they will spin faster at the beginning (inside) tracks.

The reason for the variation from disc to disc is how well the center hole is centered. If it isn't perfectly centered, everything will vibrate as the disc spins. By the third track it has slowed enough that the vibration doesn't cause a problem.
- Thanks, Charles. That makes sense. (nt) - givemevinyl 09:55:07 07/03/09 (0)

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