Electronics Forum / Repair / July 2004

I pull out some wires in RM-MC34LT remote control from Minidisc
MZ-NF520D. It's been between remote control center and minidisc
(Bridge PWB). Does somebody know where to find scheme to repair it.
It's not a big problem, but colors of wires on input are not the same

According to Laser Sams FAQ at:
http://www.repairfaq.org/sam/laserdps.htm#dpslpnr
Some laser diodes are designed to be operated with a curent limiting
resistor as a driver. Sam points out that he tested some diodes that

Have a Kohler K161 -RT 7 HP, Horizontal shaft with no spark. The
condenser seams OK to a volt meter test, but not sure about the HV
capability, and looks fairly new. The points look like new, and act
like a switch to a DVM. They are also clean, and not pitted.

Hello, all.
I was just wondering if it's usually the case that the laminations of the
transformer in a microwave cooker are welded together. I'd like to re-use a
core or two if possible (by discarding the EHT secondary and winding a new,

Many, including Jerry, Andy, and others, have given me some pointers on
a new 20 inch analog TV purchase.  I'm used to a circa 1986 Sony KV-
20XBR which I consider an excellent TV overall.  It doesn't have any of
the bells and whistles that the newer TV's do have, but its build

I have a Toshiba CF32C50 with a sound problem that from what I can determine
seems to be a problem with the Sony SBX1637 module.  I have been trying to
find the part on line, but the only source I have found has a $25 minimum
and this is only a $7 part.  Does anyone have another ...

I have an IBM G70 monitor that has gone dark.  It still has high voltage and
the CRT lights.  So I think the trouble is in the logic circuitry or the
power supply.
When I switch it on I hear the degaussing surge.  But when I press the

I have two radios, one that was in my boat, and one that came in my car,
they both seemed to just stop working.  The "tuner" for the radio I mean.
All I would get was fuzz, even with the antenna fully plugged in. I don't
understand why it does this.. I did nothing to either piece ...

There is a display on top of the picture that says:
SONY VIDEOSCOPE
Welcome to a world of advanced technologies.
How can i get rid of that? i've tried every remote i have.

This set squeals when plugged in. The HOT is shorted. Is this the case
of where the small coil near the heat sink needs to be removed scraped
and reinstalled with the new HOT? Is there anything else that I should
look for before powering the set up? Also the area of the board right

I opened my TV set to make a repair , and a tribble got in there and shorted
the HOT .
Can I fix it by throwing some dilithium crystals in there after removing the
tribble ? , or is it time to put phasers on kill to the TV set , and just

Hello all...
I trashpicked this unit in hopes of a simple repair but such is not the
case. The motor appears to have died and only runs very sluggishly or not at
all despite having been thoroughly disassembled and cleaned. I can find

Is there a way to adjust how much gain this TV's video input jacks have?
When the television is running on either of the two video inputs (fed by a
satellite receiver and by a VCR) the display will act like televisions used
to do years ago when I serviced them and the AGC allowed ...

Sony TV   mod.  KV27TS20
I've searched the net and tried all suggestions but cant get into service
mode.  I also couldnt find a service manual for this model.  So I tried
method for other KV27TS models.  does this mod not have one?

I aquired a Sencore PS163 scope for services rendered on a car audio amp
repair. I have a Tektronix 465B that I'm very happy with, and was looking
for information on this Sencore. I did a quick Google search this afternoon
and didn't get to much. It powers up and crt appears good. ...