Electronics Forum / Repair / February 2007

Excuse me!!
Would you stop for a moment?!
O...man...Haven't you thought-one day- about yourself ?
Who has made it?

My Sanyo CP21SA1 TV is showing only a white screen. I can hear the audio fine,
but can't see a picture and can't change the channels using the remote or
manually. What is happening!?
I have seen other people on forums on the Internet with a similar problem and

Got a Sony LCD projector, model VPL-PX30 into the shop.
Customer claims it sometimes goes into TEMP/FAN warning mode. I was
able to verify the problem after about 2 hours of operation. So, any
advice would be most appreciated, since customer wants the unit back

Have this set: 21t44txm,  with Beko 12.7 chassis.
Replaced line transformer as it was smoking. Set now works,  but the
remaining problem now is that the picture (raster) is shifted down
about quarter of an inch or more.Annoyingly just enough to be

Greetings. I bought this unit refurbished and have had great luck with
TV, CD and DVD sound but cannot get the FM to work no matter what I
use for an antenna. It just scrolls around and around without finding
a station. Does anyone know any possible answers (short of the FM

  I have an older Phone Answering Machine , it uses two small tapes , one
for the answer message and one for the incoming message , I really like the
unit and hate to give it up , problem is this , it will record a message
that has been sent via wired phone , for some reason it ...

I'm searching for a replacement balance pot for an old Harman Kardon amp -
a PM645. It's an Alps 50k MN series - these are the type where the first
half of the travel doesn't effect the level but the second half does (in
other words no attenuation to either channel at the central ...

I'm the owner of an old NEC 3D monitor (I bought it around 1988 or so),
and it was working fine till I stopped using it for a few months and
switched it back on yesterday... Suddenly, the image collapsed vertically:
the bottom half is still readible and apparently not too distorted, ...

I need to find at least one MFM HDD/floppy controller card to try to
get into my old system. My billing files and some other programs which
I would like to back up are on on these drives.  I think my controller
failed.  I could really use another of these drives if anyone has one

I have changed the DIMM's in a computer in order
to upgrade.  Since then, all I get when powering
up, is one long beep followed by two short beeps.
I understand this is a memory error.  I have re-

I have a headset electret condenser mic that has a low frequency response.
Other than changing the element is there a means of getting a higher
frequency response?

Got this oddball sub in my shop, it says made in Canada but I cannot
locate the manufacturer anywhere in the continent. It has a blown output
module # S53AM1, and no generic replacement is available. If anyone knows
where I can contact the manufacturer or find this replacement ...

Someone must have seen this common problem! I checked for bad filter
caps in the amps & output..all ok! This occurs when you repair a set
for bad vertical. In the customer menu, there is no option to do
anything with the sound.

I have a really expensive DVM with a VFD display that is getting very
very very dim.
A new one from Noritake is $800, so that's a no-starter.
Any ideas how to pep up a fading VFD display?

After removing the cover to investage lines down my laptop lcd screen i have
found some strips (thin plastic strips looking like FILM out of a camera)
when i move my finger nail along one of these strips the screen checks
perfect, although when i remove my finger from that ...