Re: Yamaha cd player spindle problem??

"Mark D. Zacharias" <spammenot@xxxxxxxxxxxx> wrote in
news:IQcHh.5628$P47.5038@xxxxxxxxxxxxxxxxxxxxxxxxxx:

TJB wrote:
"N Cook" <diverse8@xxxxxxxxx> wrote in
news:esjet1$dgr$1@xxxxxxxxxxxxxxx:

TJB <2lazyToGet@one> wrote in message
news:Xns98EBC7D89C9A9IDWhatID@xxxxxxxxxxxxxxxxx
Need some help please, please, on a Yamaha CD Player model cdc-60.

Just replaced the laser unit and it detects the CD and the spindle
motor starts up ok. Hit the play button and the unit plays okay for
about 15 minutes then starts to slow down, speed generally wanders
around and eventually stops and indicates there is no CD present.

Is this likely to be a motor problem? If not any hints? This unit
is not the best to try and work on as you can't get to anything
while the it is playing

Thanks for any help
TJB

Try electrically disconnecting the motor (cut trace maybe) and
running it, the motor in isolation, from a bench power supply to
see if its a bearing problem.
Only low voltage, 1 to 2volts at most usually


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/





I did try running the motor from a low voltage and it ran okay but
maybe I should let it run for 30min or so and see what happens???

TJB

They had problems with shorted brushes on those motors...

Mark Z.




Is the problem I described above a symptom of shorted brushes. I
originally though it may be an overheating problem. Are there any other
faults which could manifest themselves as described?

Is it possible to clean/repair these motors or do you simply just go and
buy another one?

Thanks for the help so far
TJB
.

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