Question about Music Hall Audio Players & Recorders
Even after changing discs, wiping clean, lables facing up etc. Worked fine when purchased new from Audio Advisor then progressively got worse, stating "NO DISC" on display window.
Posted by Anonymous on
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Posted on Jan 02, 2017
If your CD player has been working for many hours and cleaning the lens didn't help, then the next thing to do is changing the spindle motor (the one that spins the disc), since the brushes and the commutator get dirty/oxydized with many hours of performance.
The motor can also be cleaned, but it's kinda complicated and delicate to do it, so you might want to change it instead.
The same holds for the slide motor (the motor that changes the position of the laser pickup).
To clean the motor you need to desolder/remove it and open it up (you need to bend out the clamped parts on the motor housing to release the cover - also, mark the position of the cover so you can put it back in place in the same position as it was prior to opening it - some motors have an indentation so that the cover fits in place in only one position).
Then you need to remove the cover (this is a delicate procedure as you can easily damage the brushes).
You can clean the brushes and the commutator using a long pointed scalpel - gently scrub away the brownish/black residues on both the brushes and the commutator.
Now you need to put the motor back together, taking care not to damage the brushes when you put the cover back in place (kinda tricky but it can be done).
After closing it, see if it runs smoothly, you may want to try and run it on some 3 volts - it must run quite silently, with no more than a gentle humming sound.
If it runs ok, you should use a tiny flat screwdriver and a small hammer to bend the housing edge back onto the cover to fix it in place (basically, you need to rehammer back in the clamps that held the cover in place, this is also a bit tricky and delicate thing to do).
Now reinstall/resolder the motor back in place (motors on some brands/models can be worked without removing them).
Well, i've just told you how i repaired quite some CD drives which were virtually dead, i'm actually still using a yamaha which is more than 15 years old (i myself have been using it for at least 10 years now), i got it as a scrap piece, it returned to life after the above described procedure and it actually works perfectly up to date.
Anyway, i guess the easy way is to simply replace the motors (they need to have the same axis dimensions and mount holes as the original ones, also they need to run on the same voltage - things to keep in mind when you are looking for new motors).
Hope you can get it working...
Posted on Jul 24, 2009
Sounds like that may be the case. You can buy one of those cd cleaning discs and try using that. or if you want to spend the time dis-assembling the recorder and use some rubbing alchohol and a q-tip to clean the laser lens. Otherwise not worth the cost to repair.
Posted on Oct 15, 2009
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