Electronics Forum / Repair / February 2006

My microwave oven is almost 10 years old. I didn't notice a change in
the way it works, but I am still concerned whether there is a
"radiation leak" after so many years in operation. Any expert advice
will be appreciated.

I like to know how to reset my mitsubishi CT-28BW2C. I got this tv from
my uncle but did not receive a manual guide from him. My screen is
acting strange and I like to know if it is a setting or a problem
(probably the last one). Could someone help me? (I was not planning to

I'm working on an Emerson Research Clock radio with a CD player.  The
CD player is intermittent, seems that it crashes when trying to start
sometimes.  I cannont find service info for this unit so the next bext
thing is a data sheet for CD controller IC.  The CD plater has a

OK, so I search for Yamaha tuner problems (intermittent FM) & find the
threads for LC7210 problems.  I replace the IC for $21.50 & same
problem!  Tuner works for long periods (hours) & suddenly the signal
strength drops to "0" & white noise only, no FM stations.  AM & all

Does anyone have schematics or service information for a Philips CDC-875
6-Disc changer?

Lots of talented people on this forum, if anyone knows how to explai
this problem I'd be very grateful
It's the NV-FJ710B (Tape Library System and very speedy fast forwar
and rewind capabilities flavour of a Panasonic workhorse) - just pas

I am not a big electronics chap so this may be an obvious answer but..
I drive a BMW R1100RS motorcycle and the alternator has hit the dirt,
removing the voltage regulator/brush unit
(http://dazhong.en.alibaba.com/product/50050839/50231991/Voltage_Regulators/Volta
ge_Regulator.html

I've recently repaired an LG Flatron 795FT Plus monitor. I've replaced
a mosfet which was in the horizontal linearity control circuit. This
section is uP controlled, so there is the possibility to change the
speed of the electon beam in discrete steps.

My favorite VCR crapped out and I'm hoping someone can help me.
Here is what happens: when a tape is inserted it goes in, drops and starts
to wrap but not completely the Drum does not turn. It won't go into Play or
Fast Forward but will go into rewind.

My TV stopped working so I thought the power strip might be bad.  I
plugged it into the wall directly and it worked fine for 2 weeks.  Then
it died again.  Unplugging it and plugging it back in helped it work
for another few days.  The last time it only would fire up after being

I have a Sony KV-20TS27 trinitron TV, made in February 1992. It
displays UHF channels and the composite video fine, but doesn't display
VHF channels. Actually, it seems to display them intermittently;
haven't tested it thoroughly, but it seems that the VHF channels work

how to remove from an analog meter?

I am not sure if anyone can help me.  But I thought I'd ask before
buy a new one.  I have a pair of Infinity IL 50 home speakers.  The
are a tower speaker with a powered sub built into it.  When you appl
a signal to these speakers they will kick on by themselves.  What m

Old Mitsi VS-405T rear projection has acquired intermittant vertical
jitter.  Hopefully not the IC as it is obsolete.  Other than replacing
all caps in the vertical section, anyone remember this old circuit?
many thanks

I have a Sharp DV-SL20U DVD player that plays CD's but doesn't recognize
DVD's.  I've cleaned the lens and determined that the laser is working.  Can
anyone help bring this back to life?  Thanks.