Electronics Forum / Repair / December 2007

Having problem with Philips projection TV 55PW938317F.
Picture looks greenly and pallid. Convergence looks good -
undisturbed.
All 3 guns - light. What module can cause of this problem?

Works fine, but are there any recommended routine replacements for the
no doubt aging caps in the power supplies??
TIA!
and happy holidays

I have a  Panasonic  TV that is about a decade old that has developed an
intermittent loss of raster. Only once could I get it to respond to a little
judicious percussive maintenance.
It has been along time since I have explored the guts of a TV. I have

I have a "legend super lead 100" guitar amp from
the 1980s. Very  cool looking amp, solid
finger-jointed oak cabinet. It has a 12ax7 preamp
that sounds pretty good. But the "color gain"

Does anyone know of a UK source (other than Sony) for the 10uf SMT
capacitors used in Sony camcorders.
They are 3mm in diameter and 5mm high. I have only been able to obtain some
of 4mm diameter but they are slightly too large to solder without causing

I've got a ~2 year old microwave that has shown no previous signs of
trouble and is to all appearances in good working order.  During
normal operation (melting butter on low power) this morning we heard a
familiar 60Hz buzz, and then sure enough it shot an arc out through

I am hoping somone can help me with a problem that I am having with my
Television.
I have a Hyundai 42" Plasma TV , Model no:- HPT-4240.
Over the last few weeks I have been getting a Black band down the

RCA M # 27F501DV, or Toshiba MW27F11C, similar sets, both TV/DVD/VCR.
Vertical IC blown LA78041, two 30 volt zeners shorted, 100 uf @ 35
volt cap reading low. Replace parts, & the vertical blows up at turn
on. Can't get at the board to get sensible measurements..wires are

I have a Sony STR-AV950 receiver which works fine except that the
display does not light up. It lit up intermittently for a while
(sometimes when receiver was hit). Now it will not come on at all.
Any ideas? TIA

I have a chance to pick up a nice 32" TV for free.  Not sure of the
brand or model yet, but the owner says it only displays 3/4 of the
picture until the set warms up for 5 minutes, then it's fine until
shut down.

Yes, it's me again. Bear with me for a moment: I think I found
the problem.
The EKB is Yamaha PSR-12, about 20 years old. I can leave it powered
for a long time, no problem. Play it for 30-90 seconds and it

My father-in-law asked me to look at a 2 year-old Sony boombox which he
said suddenly "doesn't work". It has a CD player, cassette player, and
AM/FM tuner. After playing with the controls I find that the CD player
reads CD's and displays appropriate stuff on the LCD, and the tuner ...

Raglan Road  (chivlary.com link thangy) Don't hand me your Crap about
google.To HELL! with those google queers!
cuhulin

I got many great replies to my original post,
http://groups.google.com/group/sci.electronics.repair/browse_thread/thread/fec84
9027dfe5878/
With work getting in the way, I have been a bit slow at ordering and
replacing the caps in my AR 91s speakers (25 yrs old). I hope to find

On Dec 18, 1:14 pm, mzen...@eskimo.com (Mark Zenier) wrote: