Electronics Forum / Repair / June 2007

TWO monitors, same problem.
The first one: Sony multiscan E400, 19" chassis F99. This chassis is common
with those other CRT computer display:
IBM 6551 models

I have built a software controlled receiver based on
the RF section from a Grundig YB400 (YB 400, Yacht Boy
400) radio; I have the schematics from the Grundig
service manual (kindly posted to a web forum) but

I have a circuit board with a surface mounted s-video connector.
The solder connections all look good, so perhaps the insides of the
connector are damaged.
Anyway, I'd like to get another surface mounted s-video connector and I'm

I need to know how to get to the menu to adjust the vertical hight and
lenerity on the RCA chassis ITC008F AM.
                              Thank you
                                       Vince

We have an old Mirtone intercom at the apartment. What might be the reason
for the crackling  in the speaker when some one buzzs a tenant? It is worse
in some and not that great in all the suites.
Patt.

can someone tell me where a school in Los Angeles or around the los
angeles  that tech in depth training on professional installation of
surveillance system for home and business  i live in Lancaster calif

I fried a diode used for protection in a Bearcat scanner. It was fried
by connecting the wrong power cord (reverse polarity) into it.
The AC adapter puts out 13.8VDC and 700ma. I tried replacing it with a
IN4001 and it powered up the display and started scanning.  However

I have an old Gateway EV700 monitor which shuts down after a few minutes of
use. It sometimes sort of flashes the screen as if maybe it's trying to start
back up, but is never able to on its own. It will come back on for a few
seconds if power cycled, but will then shut down ...

Can anyone help me with the value of a resistor on an Onwa tv set
Model KA 120, the resistor location is R424 and located from pin 7
of the HT coil, is a 1/8w, The one I have is burnt beyond
recognition and I havn,t got a schematic to find it and hope not to

I want to change a linear 50k pot to an audio taper 50k pot in my
Fender Blues Junior guitar amp.
Do you know where I can find such a potentiometer ?
I have try to find it in Farnell catalog, with no success ...

It's a JVC AV-27920 television, circa 1995 or so.
I understand that manufacturers deliberately build in overscan so
that any shrinkage resulting from CRT aging won't produce visible
black borders.  But I would like see all the picture.

I opened the deck today and figured out that a gear on a motor had slipped
outward. I pressed it back and the deck functions. However, it seemed a bit
strange that both side of the deck had the same problem. After a closer
look, I noticed a crack on the gear. Any hints on where ...

I salvaged a motor from a mates tumble dryer (made by servis I think)
Not 100% sure on how to wire it up.
Mounted to the motor is a socket which has 3 wires leading to the motor, 1
red, 1 white and 1 blue labeled,

Ok, I need a lot of help!
A long time ago, I could get all my new messages that I got for my
gmail account also sent to my yahoo email, how am I supposed to do
that now?  I forgot how I did it and I REALLY need to do this.  Can

What would be normal and what acceptable for a solid state or valve/tube
stage amp. ?
Well you would not want the gain/ output audio to go up over an hour of use
with a constant input.