Electronics Forum / Repair / November 2004

Is there a way to more finely tune the convergence? Like fore example
by corners? If so how? Been in the serviceman mode could not find a
convergence solution. Any help would be nice. Thanx

Dose anyone know why an acer 1768i monitor would be shutting itself
down. If i turn it of and leave it for a bit then it will start up OK
Its not power managment, it is a fault.
It is like some sort of protection is kicking in but i dont know why.

I have a Finlux 72R100MC 16:9 100Hz TV with a small alignment error in
it's green.
Does any know how to access the service menu of this type of TV.
There are many other models with the same software like 72R3xx,

I have a Toshiba 32" TV about 6 years old.
The problem is that when I switch it on, I hear the normal "coming on"
sound but it does not come on. No picture, no sound. It's the same with
remote or button on the set itself. I looked and no light from the

Just got a Viewsonic G790 with the horizontal squished into a band about 2"
wide from top to bottom. Obviously the H-deflection transistor is ok,
anybody seen this before I dig in?

This Mitsubishi CK-3526R has a greenish red tint. The customer said the problem
happened after a power surge. With the color control set to minimum, the gray
scale is also tinted. I grounded the blue cathode through a 4k resistor and the
screen turned a nice deep blue so I know the ...

I'm looking for the meter movement from this 3" analog panel meter.  It's
50 uA full scale (not sure if the 1921 specifies that) and that would be
preferred, but if you have something mechanically identical but up to 1 mA
full scale or so, that would probably be acceptable.  For ...

I have Panasonic TV, typ:CT..... There is no colour on CH07, CH08,
CH09 and CH10. Others canals have a colour. What is bad?

I have an acient HP6236A triple output supply.  It doesnt work right.
The 6 volt range seems to go to about 10 volts.  When I go to 20 or
-20 it goes full voltage.....the I tried to measure the output
transistors they seemed ok ie no dead shorts.  I have no

Hi all...
I'm looking for the TDA3571(Q) datasheet.
It seems to be to old, and It's very hard to find
info about this chip. It's a sync separator/generator.

Is this a shorted diode problem, anyone know?

Hi all...
I'm looking for a Philips K35 chassis schematic. The only
one that I found is a somelike low-end chassis without
scart, and I'm interested in the scart section (mainly in the

I have a problem with audio hum in a satellite TV system that I have
installed at my parent's house.  It sounds like 60 cycle hum to me.
Recently I had similar troubles at my own house when I tried to
transfer some cartoons from my laptop to a DVD burner.  I managed to

I got mine a while back and have had good luck with it except on a CTC187 a
couple days ago. It had a corrupted eprom, (set had HV, no raster or sound,
could not be turned off). Reinitializing eprom resulted in a dead set, (no HV).
Eprom check said no errors eprom good. Uploading a ...

Looking for a replacement part number 219269 for RCA VCR VR676HF.
Thanks.