Electronics Forum / Repair / February 2008

I got a call from someone who has a Dell Dimension Desktop computer that
won't "come on".
They had a "Geek Squad" person look it over - the person said the 250w PS
was shot. There was 5v on one side but not the other. Then - those parts

I have LG Tromm WM2077CW and I am looking for the schematics. It has barely
been used, but is out of warranty. Here is the problem it has had since day
1. If you run a load of laundry it takes almost 2 hours to finish.  It tries
and tries to balance the load until it gets it ...

Just picked up an older pioneer vsx5700s. It sounds fine and seems to
work but from time to time the receiver makes a click and the sound
shuts off. The display on the front of the amp still moves along with
the music but no sound comes out. This happens on all channels. I'm

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My 3-year old Admiral washing machine (made by Maytag)sometimes fails
to drain and spin at the end of the rinse cycle.  It has been doing
this about 10% of the time for the last year.
If I rotate the timer back to the final spin position, it always works

I have found that my spindle motor has gone bad.  However, I am unsure
as to how to remove it.  If anyone can give me step by step directions
or has a service manual available.  It would be greatly appreciated.
thanks

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I have a Sony KV-20FS120 connected to a Samsung SIR-T150 ATSC tuner.
I can get composite video to work between them just fine, but using
component connections (Y/Pr/Pb) gives a picture with no horizontal
sync whatsoever.  I tried swapping out for a Samsung SIR-T351 and got

Model HLN617W. It has sound but no picture. Replaced lamp without
success. TV has a whine when turned on then it shuts off and turns on
by itself. I'm thinking ballast or color wheel. Any tips on how to
determine what's causing this will be appreciated.

I just wondering if some one could help me. I need service manual for
Kenwood RXD-M32V (stereo system).
The power circuit is not working, standby light is not ON, could anybody
help me

I was wondering if anyone can help me either via explanation or by
referring me to a proper site to understand more about this issue :
1. What is the difference between the term frequency response and
bandwidth in term of testing/calibration oscilloscopes?

I bought a box of three halogen kitchen lights. I need to split them
into a two and a one for under the kitchen cabinets. To do this I'll
need another 12v transformer. Do I need to get the same type or could
I use any 12v transformer - even something for a radio or a battery?

I recently purchased a well used Panasonic AG-1970 S-VHS VCR. Thing
works great except for the noise produced while loading and unloading
tapes. Sounds to me like the tape loading portions of the transport
are in need of some grease. Question is, what grease or oil should I

Amp seems to work perfectly well, being repaired for minor problem, no
succeptibility to microphony or tinging distortion.
Testing the 2x EL34, gains are good and matched but after a minute on
heated C/H insulation check, the resistance gradually decreases to 1M for