Electronics Forum / Repair / August 2005

How to connect DSR-421 BNM (General Instr.Corp-U.S.A.)
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Thaqalain   Aug 9, 9:12 pm     show options
Newsgroups: alt.satellite.tv

Probably an easy question.  I have a UPS which suffered battery leakage.  The
resulting leakage seems to be "crystallization" underneath the batteries (which
I have not removed yet).  What is the safest way of cleaning this up once the
batteries have been removed?

On my audio amplifier one channel doesn't work. Pair of power TO3 NEC
transistors were damaged (NEC 2SD188A and a NEC 2SB545A).
I can buy these transistors but model 2SD188 is without "A" and 2SB545
is with "A". I try to find some information or data sheet of those

Hello I have a rather annoying problem and I'm stuck between trying to
fix it or just buy a new one. I hae a ROland MC-505 Synthesizer and the
2 line LCD screen slowly started to get more and more dead pixels until
just recently where it has been completely illegible. I took the ...

Electronic carillons are things that play from churches
channing

Hey folks,
Wondering about something in the service manual for my Toshiba CF2638
TV. I'm currently replacing most of the power supply caps to try to fix
a power-on problem. For one of them the service manual lists it as a

Philips TV 17PT1563/05 - working ok, picture starts to jump slightly -
'ping' - smell of burning, dies. Checked plug-top fuse, opened up the
set and checked for any internal fuses - one found checks ok. So I guess
it's a power supply problem. Any clues please? - there's some ...

Monday, August 29, 2005   6:59 PM Pacific   --     I just bought a GE
telephone answering machine.  It picks up after three rings but then
causes the phone to ring continuously and does not record messages. --
  It is called a, -GE Digital Message System--.  The Model No.

I have been trying to fix my TV which has sound, but no picture.
I am not very good at fixing TVs, and was wondering if someone could help
me.
The power supply voltages are ok, and there is no life in the high voltage

Remote for my 6 month old purchased DVD(CyberHome-WallMart)stopped
working since long:when I took out original CR2025 3V,I have seen
leakages(white salty material contamination)around it,I fixed CR not
2025,3V from a dead CPU,shake remote,it start working.

  I need a DTMF tone generator and decoder for a project but dont know
the part
  number. I have seen some part#s like CD22202 but cant get them from
ahy where

dear newsgroup,
pls help me in fault finding my monitor (small monochrome - brand:
NTC). it always blows the chopper transistor and the controller ic
(maybe a pulse width modulated ic). what could be the possible failure?

Does anyone have any ideas as to what might cause the picture issues
seen here:
http://pookey.co.uk/gallery2/v/tv/
Is anyone able to get hold of service manuals for this TV?

Looking for someone to fix my 21" CTX monitor, local shops are useless.
Monitor made a pop and no picture, i looked but cannot find anything
burned or such.
Any suggestions of trustworthy shops?

I've got a Sharp mulitformat VCR (pal, secam, NTSC) that seems to want to only
playback in black & white.  I'm sure I had it playing back in color before, but
as I don't have the manual for the machine I don't know if this is a setting I
can't find yet (hopefully) or something ...