Electronics Forum / Repair / April 2008

It seems this 19" LCD won't start up when it is cold. If you leave it
for a bit then it will eventually start up. The customer reported that
it had a swimming effect, but I did not see that happening. I did notice
that the backlight seemed to dim and brighten on it's own once in ...

After repairing a microwave oven should I plug it in and test it to make sure
everythings in working order before I reassemble it?

Ok folks, heres one for you!  I have a General Electric undercounter
(over my stove) microwave (#JVM1430WA01).  It has worked great for the
last 4 years... or should I say until the cooktop lights went out
(light inside microwave still works).  I thought at first it was the

I bought a new microwave oven, so it's time to dispose of the old one.
It's a 2yr old Sanyo Super Showerwave.  It has a bad magnetron and
burned waveguide cover.  The magnetron is still under warranty, but I
didn't think it was worth the cost of labor to get the magnetron

I read in comments about one RF-converter that it only converts audio
if there is video present.
Is this true of all RF-converters?
I guess I need to buy an RF modulator to take the audio and video from

Now that we have a high speed cable connection we do not need dial up.
But it might be nice to have back up. I can add a dial up but will there
be conflicts? The cable modem is always on. Now I put ELNK on the new pc
and maybe I have a problem. I figure we'd only use the dial up if ...

I just bought a Hickok model 265 CRT tester/rejuvinator and it has no
docs with it. If anyone has any docs or info
about how to use this beast I would be most appreciative.
I found a guy in Ohio (Ray Nowak) who had one for sale on his webpage,

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I am having a problem identifying a couple diodes. They are marked
D514  & D516 (zener). The zener has an 01 or C1 on it. I have this
unit pretty much debbuged but could use some help identifying parts.
Also is the line fuse a 10amp slo-blo or fast acting ?  Thanks in

I have got a problem with an AKURA AP2821S TV. The problem is that it
seems to have lost its focus. This does not appear to be a problem
with signal reception as the picture from a VCR connected by SCART is
also blurry as are the setup menus.

I have a 15 year old RCA F27120WN that has just developed what I think is
called "pincushion" distortion. The entire picture is filled in, but
vertical lines near the sides are bowed inward. (Horizontal lines are fine.)
Any particular circuit or component I can check? Other than ...

Is there an FAQ showing how to check belts etc on this please?  Or is a cog
not tight enough or engaging properly?
I have a DV-CP702 which is about ten months old and has played about 4  or 5
discs in total!  Looking at the transport I can see the DVD being picked up,

A couple of months back, you were kind enough to scan and e-mail me a
section of schematic for an old Technics SU-V8. It has now come back with
another problem which, needless to say, is not covered by that section of
schematic. If it's not too much trouble, I wonder if I might ...