5 Nov
2007
5 Nov
'07
9:25 p.m.
On Sun, 4 Nov 2007, der Mouse wrote:
So I opened it up, and I have been completely unable
to make the disc
drive motor spin, with or without a CD in place. I've pulled it apart
far enough to have the CD transport mechanism out in the open, and it
still won't spin. (In the process, I found the stretched belt that was
responsible for the weak eject; I dug through my rubber band collection
and replaced it, and now the tray eject works fine.)
Now, I'm not Tony; I'm not about to rewind the motor or some such. But
I was wondering if anyone knows how similar the mechanism is likely to
be to a cheap computer CD reader - basically, I'm wondering if I can
raid one of my extra CD drives (of which I have several) for parts to
resurrect the Technics. I can just open things up and have a look, but
if anyone has experience, it could save me some headaches.
Any thoughts?
I've repaired a number of their changers over the years. A common fault
(and not limited to just this brand) has been the leaf contact switches
that detect the open/close positions of the tray and disc positions. If
the changer thinks the tray is open, it's not going to spin up the disc.
Make sure you check those contacts and any others that detect the disc
positions before you get to far along in troubleshooting other things.
Any chance your particular changer uses an indexed contact system to
detect which disc is present at the reader mechanism? With 5 discs, if
something got reinstalled several degrees out of phase that might also
confuse the player.
As for interchangeable parts, I would expect that the changer would not
have the same motor as most cdrom drives. The spindle motors used in most
of the changers I've repaired over the years were larger than those you
typically see in cdrom drives. If you do have a bad motor, replacements
are fairly easy to come by (email me if you have trouble finding one if it
does need replacing).