Electronics Forum / Repair / May 2004

Hello, I have two m1823 20" monitors, very sturdily built that I have
been using past few years.  One has had minor display problems with
inward arced lines on the sides and dimness and these improved when I
smacked it on the side.  Thinking it was a poor connection problem I

i have a rca model f38310.problem: unit is dead i talked with rca customer
svc and in order for me to get some help they want $12.00 for every 3 min
thats not fair. this is my second hdtv unit in the shop it has a built in
satellite recevier also..chassis # dtv306gcb i have cheched ...

 Anyone know where I might find schematic and general repair info ( like
SAMS) for a broksonic CTSG-9369CTT TV/VCR combo?
Ron H.

Hello, I'm in need of some hints here..
I have a regular four channel kenwood amplifier/radio unit that one day
started to make crackling and bussing sounds at all outputs..
Inside I found a blown electrolytic capacitor (the insides had been

I'm reversing the circuit of a 8-button pc joypad. I read on the web that
the native joystick interface on audiocards supports 4 buttons and 4
potentiometers directly connected to the port. Now.. does anyone know how it
is possible to implement 8 buttons? On my actual circuit there ...

This unit will play all day fine. next day unit led flashes will no start up
unless unplug unit plug back in. Any one run across this beast. I would like
to find out how to disable protect circut Unit will
play fine. Any help would be appreciated.

I would like to know if i can take the mainboard out of the set and repair
it to get the output voltages from the T1 tranformer without all the other
modules being connected. Or do I have to leave it all connected to repair
the set. The problem is no output voltages , won't turn ...

I'm sentimentally attached to my Sony cassette recorder TCM27.   I put it
away for about 1 year and when I retrieved it it was faulty. It will play
but will not rewind or FastForward.  - definately NOT battery or PSU.
Local repair shop says drive clutch release is worn and Sony ...

Thomson set-top box for UK freeview reception. Model DTI 1000.
This unit (not mine) keeps blowing its internal fuse. From what I've been
told, this only happens on power-up. The fuse that I've removed is a
standard 1A 20mm type. Does anyone know of the cause (is it typical for this

My Sony SLV-E470EG VCR is now operating in a weird manner after
rewinding or fast-forwarding the tape.  All functions behave OK, until
stop or play is pressed during a fast-forward or rewind operation.
At that point a noise of a motor running without effect is heard for

       I bought a junker VCR.  It seems to work fine, but has a squealing
switching powers supply.  I know the supply isn't worth replacing, but I'll
bet I have, or have access to, most of its parts.
       I remember old rules-of-thumb like, if you hear a 60 cycle hum on an

Does anyone have a suggestion or lead to where I can buy one can style screw
terminal 100K uf 25 volt capacitor for my power supply? It's dimensions are
2"D x 4"L. I can find all the spec's on what I need except a supplier.
Thanks, George

In my home, I have switched some of my incandescent light bulbs to
Fluorescent E-lamps like GE FLE26HT3/2/SW. They apparently work use a
"high frequency or RF magnetic field to create a time varying electric
field which in turn drives a discharge which is very similar to the

   IC "401" (8 pins) in the phono preamp circuit is defective in this
Technics SA-222 Stereo.  "4559DS" is a number on the IC.  Can you tell me the
Technics part number for this IC?   Also, where is a good source for
hard to find ICs?

    Thanks to everyone for your suggestions.  I found the part number
for this IC,  # SVINJM4559DD.  NTE 778A is a replacement, which I
did not have, but I used a LM1458 and this fixed the problem.
                              Brad