Electronics Forum / Repair / April 2006

Acer 77e 17" digital monitor M # 7377XE no red adjustment. Anything
common?
Dani.

Hello, when we push the power button there is no response; nothing
lights up at all. My neighbor said if he remembered to just push the
button once it would all of a sudden come on by itself after a half
hour or so and everything would be fine.

Dell Sony Battery pack from 8200 Inspiron type 66Whr
System didn't like it, either slot. Won't charge it and flashes LEDs
strangely. Happy with other pack either slot.
-->> System OK

I'm attempting to bring my Bulova model TR250 ultrasonic watchmaster
cleaner back into service.  I have found two rectifier diodes blown,
along with the circuit protection fuse. The wafer transducer is epoxied
to the the tank, and I am not sure how to go about testing for

Hi;
I don't recall the exact model right now, but it's got the digital
convergence. Set came in with serious errors mainly in the red
horizontal channel.

i have a sound king skak20ra guitar practice amp
worked fine for ages, but then i plugged a mic jack plug in wrong hole and
all it does is make a fairly loud buzz now.All fuses are ok.
Does anyone have any idea what it could be and if i could repair it myself,

A friend of mine is trying to repair an active woofer of a speaker set, which
started to blow out the primary fuse suddenly. The problem would appear to be
in the torroidal transformer, because even when nothing is connected, the fuse
blows. We decided to be stupid and put in a 2A ...

I have a  GE microwave  oven that just stopped heating. I have checked
and found the problem to be in the high voltage section.  I found the
high voltage diode shorted and the high voltage capacitor going bad.
I've replaced both of these, but it still does not heat. When I

It's a Samsung TV-686 with a SCT12B board.
Good picture on the bottom half, retrace on the top, bright line in the
centre.
While all I've read suggests the TDA8350 vert o/p chip is the usual culprit

Helo I have an old ProView, Product No: BM-568, LCD monitor. The
monitor is Working well exept that after few minutes the monitor is
like restart it self(he turn it self of and on and the display is not
configurited. to fix the display I re config it from the screen menu

I took a chance on buying a Scout 40 (a frequency counter/recorder
made by Optoelectronics) used on Ebay, knowing full well that it was
inoperative due to the original owner using a reverse polarity power
supply by accident. My thinking was that it would be something simple

I have a couple CRT monitors ViewSonic 15" and Proview 19" both are ne
but have problems...the entire screen on both of them are crooked o
slanted. I took them apart and there is no ajustment for this...wha
can I do? Thanks for any replie

I am looking for a copy of the instruction manual for the Kenwood
FL-180A wow and flutter meter.  Either a good Xerox copy or  an
original is ok.
Thanks,

I've had the RCA D52W20 for over 2 years now. It's served me well, amongst
all the bad ratings it's gotten. Today I found out about the service menu,
so I decided to play with that. 190+points of convergence was a blessing. I
then decided to see what was in geomatry, so I shifted ...

Have an elderly Proscan 32" TV with cable hookup, DVD and video
players. System has worked fine for many months. Now have multicolored
diagonal lines on channels 1-10. 11 and above are fine.