Electronics Forum / Repair / September 2006

Sharp model 25A-S100
Vertical output chip  NTE7039
In the past TV had intermitant vertical problems, resoldered pins 13,
12 and 11 on NTE7039, good for two years.  Now have just horizontal

Our Sharp built in microwave, model no. R-420DK, hasn't had a LCD
display that was easily visible (especially at night) since we bought
the house 3 months ago. The light for the display came on yesterday
and today while we were using the touch pad. The light stayed on for 5

I try to find a replacement for part L5A3 : 321Z005A20 (made by "kd") that
seem to be faulty in IIYAMA monitor
(primary shows 0.3 ohms, must be 1.5 to 2.5 with my evaluation of internal
resistance)

I live in a old house but I get the three power lines coming into
breaker box (110x2, ground).  I don,t know if he is pulling my leg, but
I was told in a note that something is wrong with my electrical, and
they had measured 70 volts between the box and the ground.   My

Got this DN2000f dual cd player made by denon for repair. One of the
decks attempts to read a cd, spins slightly a couple of times and then
quits. I've already confirmed it's not a lense related issue. Any one
have the diagram or service manual to trade or give?

I have a ViewSonic monitor that I purchased 2 yeasr ago. It was
"refurbished" one with a 90 day warrenty. Over the last year it ha
started to (& progressivly gotten worse) loose its color. Some days i
is fine. Other days it will have no color, off colors, and many tome

General Electric 27" television
Service #: 27GT610FE1
Model #: 27GT610
Chassis #: CTC167R

Surface mount diode out of a V, Inc Vizio P4 plasma tv.
has  V6 33    I can't find anything on this. V, Inc has good support for 1
year, then nothing.
Thanks much, Scott

My trusted Mitsubishi cs-2710ra died, it displays thin horizontal bar
on the middle of the screen. I can see picture elements in the bar .
I'm debating if it makes sense to fix it or just trash it.  I'll attemt
to  fix it first by myself but I need help to troubleshoot it. Please

Here's one for posterity.
I have a portable DVD player (10" Mintek MDP-1060) has gotten into a
situation where it will spin up but then not detect disc.  I've heard
suggestions of shot laser, clean the lens, laser re-alignment, and I'm

We have a Tektronix SD-24 sampling head (used for TDR and eye diagrams),
which used to work fine, but now fails (plugged into a CSA mainframe)
with a power on self-test failure. Seems to be a hard failure.
The messages say "error index m1661", and say the problem lies in the

Hi...
  My wife's been after me about a couple of old appliances that should
either be fixed or tossed.  One is a 4-yr-old waring blender that just
quit one day, no burnt smell or anything.  Just stopped.  I've hung onto

1. Does anyone have comments on this model or similar, LG 42" plasma
TV's, have you notice this on your TV sets?
2. Does the EZ SoundRite option real work?
I have a LG HDTV plasma model DU-42PX12X (Purchased from FUTURESHOP

   Mystery problem with Compaq Presario 1060 Laptop.
   Note: I service TVs, etc.,  rarely service a computer.
   PROBLEM (Hard Disk Drive is fine):
   On the same day (no storm and it wasn't dropped) this laptop

Yes, protect trip.  (P.D. trip), I can't believe I get X-Ray P.D. trip
and H. Def. P.D. trip too.  This one that have to reset by replugging
the wall plug.
Projector was working unit when we sent it back out after resoldering