Electronics Forum / Repair / February 2008

I have a tek 2430 with a non- op trigger. It appears the main micro
processors address lines cross talking. No regular supplier has any.
The distributor search folks want two arms and three legs for one.
Anyone got any ideas?

I have this piece of.... on my bench for a few days now, its problem
is the sound is not loud enough, you have to put it to max to hear
something. My co worker is convinced its not the output ic because the
sound is not distorted, i re-did solders everywhere, still with the

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We have a XD460u front projector that will play all day as long as it
is right side up.  When it is flipped over, shutdown occurs
immediately.  I've subbed  tach pulses for each fan but the shut down
still occurs.  Has anyone seen this fault?  Thanks.  Chuck

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being reduced.  My right toe is paining and refusing to take up my
weight say once in 10 days.  I have installed an operating system

I have a four-year old AIWA JAX-S5 stereo (3-cd changer, 2 cassetes, radio,
about a $150 unit). I have started getting a distinct whine with most every
CD I try to play. It seems to be particularly bad with CDs that seem to be a
bit lighter in weight than normal (which is a lot ...

My Whirlpool electric tumble dryer AWZ241 has failed. Last Friday, the
house's circuit breaker tripped when it was turned on.  After
resetting the circuit breaker and trying the dryer, it did not trip
again.  The dyer runs but does not get hot.  I guess that the heater

I bought Panasonic PV-GS39 camcorder about 1.5 years ago. I recently
noticed that transfer of my movies to a PC with firewire does not work
and took it to the camera shop for repairs. The repair man said that
he cannot fix it since the connection to the circuit board is cracked

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My Sega CD, which uses the KSS-240a laser assembly, makes a spine
chilling sound when it gets warm..  I believe it to be a cogwheel is
expanding when it warms up..
http://www.youtube.com/watch?v=U55FF7NLgn4

We have a TDS 220, S/N B070664, with a very dim backlight.  It seems
stable, just very dim.  The inverter measures 201VAC w/ the backlight
connected, 205V without.  Is it safe to assume the tube is bad?
Tektronix charges $73.00 for the part now, as they no longer sell only

2 temp sensing things , one vaguely touching , the other bent away from the
heatsink.
Perhaps every roadie should be put in a flight case and dropped down some
stairs as a lesson.

I am working on a JVC RX-8010V Receiver. The set powers up for about five
seconds and then I hear a relay click and it shuts down. I have changed a
few electrolytics here and there with high ESR but the problem persists. I
am also working at the moment without a schematic. ...

Because another poster has problems with bad corner purity in a Sony TV,
this might be a good time to bring up my related problem.
I have a 36" 400-series flat-CRT WEGA. I had no problems with it until a day
when a discussion on rec.antiques.radio+phono prompted me to magnetize the

I have posted about my 32 inch Toshiba TV over the last month or so and I
have it torn apart and the circuit board unscrewed. The consensus is that I
have bad caps in the vertical section or the IC is bad. I need to get the
board all the way out to remove it from the plastic ...