Electronics Forum / Repair / December 2007

I bought, or got the TV for free. Its an older crosley 27" unit. The
problem is when the screen is black (between commercials) or during
some commercials, weird sometimes colored lines appear.
This picture is taken during a commercial:

I have a used Spirit SL 188 Programmable       treadmill which from
time to time runs fine, responds to input from the control panel, and
then stops.  The duration of its operation seems inversely
proportional to the speed at which it is asked to operate.  When it

About 2 years ago I posted here trying to find someone who might have
schematics for a Labtec (now Logitech) LCS-2412 computer speaker
system.
Despite repeated requests from me, Labtec refused to supply them (they

Hi I just looking for Y-PCB for Sony KE-42M1 plasma.Thanks

Help!  I need a fresh pair of eyes to look at a VERY
mysterious problem I am having with a repair.
I am repairing a 582 that has lost the ability
to record/erase tapes.

I am trying to repair an old NAD 7150 Stereo Receiver. The problem is
that there is no sound on the speaker output. Does anyone have a
service manual for this one?
Anyway, I have performed basic troubleshooting and found out the

I have a Sharp VC-A66U VCR with a dead switching power supply. I have
replaced the chopper transistor and the fuse. It's no longer dead, but
it does not
regulate. Can anyone tell me what the output voltages should be? It uses

   I have a Bose Wave Radio model AWR1-1W in my shop.  Customer
installed a new 9V battery (time/memory), but this isn't related to the
problem of no display and no operation ("dead").   I have no SM.
    The fuse is ok and I measured voltages.  "U1" has 20V input and

JVC HV-53pro rear projection TV. a 53" set.
Fault: There is sound but no picture:
ALL other functions are working fine. However, none of the 3 tubes (R
G B) are working as if no high voltage supplied.  Checked the high

I got this monitor used five years ago. Since then it has always had
the overbrightness problem, but I scraped by with brightness set to 0
and contrast to 100. This was annonying, and the local service center
in India refused to service it. About a year back, it started

Does anyone have a parts list for a JVC AV-2779S?
I'm looking for the value of capacitor C421.
Thanks

When I plug in the TV I get a solid red light followed by one blink,
then two quick blinks, then a steady series of blinks (all red).
I called Sharp and they directed me to a service center. I took the TV
in and was told something about the circuit boards that I didn't quite

There is a plastic part inside my DVD player that is broken.  Where
can I get the part?
The DVD player came out of an Xbox 360 and it is a Hitachi GDR-3120L
FK78 drive.  I've opened it up and there are several gears inside.

I have a side by side Admiral refrigerator that makes a humming / high
frequency rattle like sound.  When I move the refrigerator the sound
is significantly reduced to the point of being acceptable.  It
sometimes takes a few pushes to get it to go away.