Electronics Forum / Repair / December 2007

When watching some DVDs (maybe all; I haven't noticed it on some, but
it may not be as obvious on lower-contrast viewing?) the picture gets
slightly brighter, then slightly darker, then slightly brighter, then
slightly dimmer, etc.  Not a flashing change, but gradual over maybe

If you remember, I was having slow warm-up, focus, and black-level problems
with this set.
Over the past two months, the picture gradually stabilized, with these
problems fading away (for no obvious reason). Nevertheless, I thought it

While scraping together enough parts to satisfy the DigiKey $25 order
threshold (sans $5 service charge), I decided to open up my 2465B and
see which electrolytic caps were in the PS section (which appears to
be soft, as I previously posted).  I was able to track down

I have got a Tek 2465B which displays this error on startup:
 TEST 04 FAIL 11
 PUSH A/B TTRIG TO EXIT
From the Service Manual, it seems a calibration data error. Does it

6 years ago,on a whim,I fished a 12" Quasar TV out of a dumpster,took it
home,replaced a bad power switch and put some screws in the case to hold
the top when the plastic tabs that normally do that broke.
It ran fine for 6 years,had a nice picture,then 2 weeks ago,there was a

The LED on the set responds to the remote and there is a relay that
clicks when the power button is pressed but the set does not power on.
Inside there is what appears to be a module that looks like a power
supply. A red and black feed it and it has 7 wires off the other end.

Symptom: after coming out of storage of only a few months--totally dead.
 No lights, no sounds, absolutely no indication that a charger, a
docking bay or a battery (all known good) are connected at all...a
brick.  This particular (peculiar?) dinosaur has two batteries attached

Was I wasting my time , rather than throwing out some ECC83, a 6V6 and some
EL34 and EL84.?  All various degrees of C/H leakage causing
vibration/tinging sensitivity so useless despite useful gain.
All measured 5 to 20 M ohm on C/H insulation test on valve tester.

I have an 32" RCA TV (F3267SB CTC187CL3) .  It's one of the ones that
had the tuner problem but that's not the issue now.   Last night while
watching it seemed to turn itself off, then back on instantly.  There
may have been an audible pop but it happened so fast that I can't be

MI5 Persecution: BBC Newscasters Lie & Deny. They're Watching Me
Central to the persecution campaign waged against. me for some nine years
now by the. Security Service is their use of the media, and in particular
the broadcast media, to make clear to me. that I am under surveillance ...

i read an article(link below) on adding an external aerial to a PC
mouse to improve its transmitting ability using a twist tie to its
front
http://lactose.blogspot.com/2007/06/give-your-mouse-tail-to-improve-its.html

Hi. I need a small signal board for a Mitsubishi WT-46809. The one I have
produces no video, no menu, just retrace lines. Does have sound, so tuner is
fine. Regulator outputs are where they should be -- 9 volts 3.3 volts. Board
is dry, no tube oil leaking on it. I cannot find ...

Hi. Mitsubishi VS-8078 set. Need a red crt as this one is shorted, cannot
bring raster down to a reasonable level.. Does show video. Tried crt board
on different but problem did not follow board.
This is the bigger version tube, not the little one.

http://www.manufacturingcenter.com/dfx/news/stories/feature-7.asp
Bob

We got the following message.  It looks legit to me so I thought that
I would post here:
Hello AnaTek,
We are a manufacturer of portable DVD players. We have dozens of