Re: Yamaha cd player spindle problem??

Sam Goldwasser <sam@xxxxxxxxxxxxxxxxxxx> wrote in
news:6wvehd5ele.fsf@xxxxxxxxxxxxxxxxxxx:

TJB <2lazyToGet@one> writes:

"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?

See: http://www.repairfaq.org/sam/cdfaq.htm#cdmot

--- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/
Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
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| Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html

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Great repair faq!

Thanks
TJB
.

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