Electronics Forum / Repair / July 2009

Hello Willam
Saw your message about looking for the manual for this cash regester
and was wodering if you ever got a copy? I just had one given to me
and need a copy to reprogram the machine.

I picked up an OIP Model 165 gas laser, part no. 763-065 from the
physics lab trash today. Try as I might, I couldn't find the PSU to go
with it. It has a (custom?) three-pin inline power connector with a
metal clip on one side.

We have a Fluke  5220A Transconductance Amplifier with a problem
that's been getting progressively worse over the years.  It's supposed
to put out at least 20 amps, ac or dc, with light inductive loads.
The overcompliance circuit is tripping the unit out at around 19A DC,

I have a Greenlee CM-750 DC current clamp meter.
The power-on DC reading is 7.5A.
Yes, the zero button fixes it, but I'd rather have
it power on close to zero.  The 7.5A has been VERY

This unit is about 4 years old, it has been having convegence problems
from time to time.
It was like looking a 3-D picture with out the glasses, but as quick
as it would happen it would snap back into focus.

OK, so I have this AC motor that I would like to use in a project. It
has a partial label that shows the connections. It has 3 wires, black,
red and blue. The diagram shows a cap between the red and blue. One
connects the 120 VAC to the black wire and either the red OR blue to

I would appreciate suggestions and success stories from anyone who
has printed (or otherwise made) some standard video test charts for
camera setup; I need to make at least the following charts:
1. Full height color bars, 75% and 100% saturation;

Japan passed the Electric Appliance Recycling Law, April 2001, does that set
the earliest date possible ?
eg
http://www.japanfs.org/en/pages/011541.html

was intermittently failing to power up , now no power up.
mohmeter reads 0.13 ohm +/- 0.01, loading the 5V rail to ground on the main
board, HD etc disconnected. Not any of the 10 electrolytics or a power 3
lead SM device. What to try next , monitoring the 0.13 ohm while flexing the

I have a Mitsubishi ck-31302 television.  The menus, volume scroller
bar, channel numbers all display, but I get no video.  Audio also
works.  Any thoughts on how to repair this?  Could it be a leaky cap
on the PIP board?  I am hoping somebody else has also encountered this

I bought this camera new in '03; has worked flawlessly up till now. I
hasn't been dropped, gotten wet, etc. I use it alot. Now, suddenly, it
won't turn on. Swapped batteries, tried the charger
connection-nothing. Any thoughts, known faults, etc before I tear it

Have had 6 years of great service from http://www.pricescan.com/ItemImages/ImagesL/517615.jpg
.
Until yesterday, it played VHS tapes fine. Today, it decided to play
only sound from the VHS side. VHS heads have been cleaned monthly.

My Sony wireless headphones usually work fine for a variety of
purposes.
Video tutorials, played on the computer cause the headphones to be
used a little differently, in that I'll often pause the video to make

Wondering if anyone is familiar with this series. I was
testing it out and the bias circuitry is not
functioning. There is shown on the schematic a bias transistor
along with one diode and pot.

Hey everyone!
Just joined and wanted to let everyone know.  I'm looking forward to
hearing different ways to fix electronics.  Have had some bad luck
lately-with the xbox 360, my p2 and some cell phones!!