Electronics Forum / Repair / March 2005

   I have a Sony "Walkman" TV (b&w) model FD-270, mfg around 1988, in my shop
for service. Screen lights up, but I can't see a picture ("washed out").   I
tried to buy a SM for it, but the dealer said that the SM is no longer
available.

Alarm activates for no apparent reason engineer replaced battery an
fuse, said fuse had blown and battery was low so replaced them bot
still having same problem red tamper light lights up, can anyon
email installation manual Mac osx use

My Epson PhotoPC 850z digital camera suddenly went blind.  The shutter
seems to operate normally, except every picture is black.  The LCD
works fine, menus and existing pics display normally.
Does anyone have any hints or a link to a .pdf service manual?  Any

I need a schematic that is representataive of this model.  It was
manufactured in 1996.
Currently it will not turn on.  There is 120VAC present and all fuses are
good but I need the schematic to beable to troubleshoot.  This is my TV

The only thing you notice is a slight momentary current draw when
plugging it in that might be the degausing circuit but I'm not sure.
After that there is no power no click etc. I have no schematic for this
set and was wondering if anyone is familiar with any common problems on

I'm working on a Panasonic PV-MS2750 TV/VCR combo from 1990 which has
excessive width and severe pincushion distortion.  The width and pin
controls have almost no effect.  I've been all through the pincushion
circuit and can't find anything wrong.  The set was worked on before

I know that people with broadband internet connections probably don't care
but would there be any interest in my offering a CD-R with the S.E.R FAQ and
Laser FAQ including the Laser Equipment Gallery?  I'd probably have to
charge $25 or so (in the USA), slightly more for overseas, ...

This Sony DCR-TRV330 records and plays back ok. The customer claims that it
might have been dropped. The result is that when the cassette is played, the
protective lid of the cassette is touching the top, metal hub of the drum.
As a result, there is a loud scraping noise whenever ...

Sansui model #, VRDVD-4001, DVD will spin fast for about 20 seconds and shut
down, cleaned laser still won`t run, CD won`t even spin, tries for a second
and shuts down, anyone know the answer?

symptoms : Black screen. Feel static on the screen and hear whisper of
hight voltage. On shuting down, a multicolored circle appears for a
short time (diameter approx. 4 inch). Sound is OK.
TV Model : JVC AV28VM1PF

I am looking for an OEM or comparable replacement speaker for a
Mitsubishi tv model CK-31302. Mitsubishi doesn't carry it anymore and
Radio Shack doesn't have it either.Are there any online dealers or
dealers in the San Gabriel Valley area of Southern California who might

I just got a used NAD 3155 Integrated Amplifier. It has a main in and a pre
out so it can also be used separately as a power amp or a preamp. When I
use it as an intergrated amp, there is no output. If I turn the volume to
max, I can hear the music very faintly. The same occurs when ...

From time to time my Fluke equipment is used in a dirty environment.
Unfortunately it's difficult to clean the yellow plastic.
What do you guys do to clean your yellow fluke equipment?
rgds

I would like to change the manual volume potentiometer of my integrated
amplifier with a motor-driven potentiometer which must be infrared
controlled.
My question is simple...

I have a 5 year old gateway athlon 1100.  PC now has 2 hdd's, the
original western digital 40 gig drive & a 2nd western digital 120 gig
drive which I added about 18 months ago.  PC is dual boot, running win2k
on the newer, larger drive & xp home on the older, smaller drive.  ...