Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

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John Smith
 
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Default TEAC PCD124 CD player jumps

Hi,

My TEAC (model PCD124) radio/cassette/CD player won't play all recent (2
years) and some older (c.a. 10 years) store purchased CDs without skipping
short sections of tracks. It plays well for approximately 5 seconds then
skips a few seconds of track (i.e. silence) then continues to play, and so
on. It plays some older CDs fine (but a lot of my CDs are old so I guess
that this maybe coincidence). Not a mechanical shocking/vibration problem
and I have tried to clean laser lense.

Time to sound uninformed. Is there a solution such as an internal
adjustement on positioning of the laser (I assume stepper motor driven) that
can be made? Could the lense shape or filter material/colour be a factor?
Could the spin axis be off centred (i.e. should I machine another CD
holding/centering insert)?



Kind regards

Dean Biddle.


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Ray L. Volts
 
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Default TEAC PCD124 CD player jumps


"John Smith" wrote in message
u...
Time to sound uninformed. Is there a solution such as an internal
adjustement on positioning of the laser (I assume stepper motor driven)

that
can be made? Could the lense shape or filter material/colour be a factor?
Could the spin axis be off centred (i.e. should I machine another CD
holding/centering insert)?


The last thing you want to do is fiddle with alignment. You'd never get it
adjusted back. The plastic centering wheel isn't a part that commonly
fails.

Dirty lenses, OTOH, cause all sorts of weird probs.
Clean the lens (gently!) with a swab (preferably lintless foam) and rubbing
alcohol (91% is good). Cleaner discs are worthless for all but the thinnest
films of dust.


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Alex
 
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Default TEAC PCD124 CD player jumps

could be a worn spindle motor as well

"John Smith" wrote in message
u...
Hi,

My TEAC (model PCD124) radio/cassette/CD player won't play all recent (2
years) and some older (c.a. 10 years) store purchased CDs without skipping
short sections of tracks. It plays well for approximately 5 seconds then
skips a few seconds of track (i.e. silence) then continues to play, and so
on. It plays some older CDs fine (but a lot of my CDs are old so I guess
that this maybe coincidence). Not a mechanical shocking/vibration problem
and I have tried to clean laser lense.

Time to sound uninformed. Is there a solution such as an internal
adjustement on positioning of the laser (I assume stepper motor driven)

that
can be made? Could the lense shape or filter material/colour be a factor?
Could the spin axis be off centred (i.e. should I machine another CD
holding/centering insert)?



Kind regards

Dean Biddle.




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