Electronics Forum / Repair / April 2008

We have been operating in Michigan for about 30 years and have decided
to throw in the towel. Selling our entire inventory of Video, Pinball,
Jukebox; Coin sorting, vending, counting equipment. Many complete
cabinets and lots of parts, manuals, and test equipment. Some working

http://home.graffiti.net/diverse:graffiti.net/sf2.jpg
No markings, a black potted box 7x7x 15mm external dimensions.
If a stepup transformer , why so small?
0.3 ohms between blue and red lead and 144 ohms between blue and brown lead

My 4 or 5 year old Eizo T766 19" CRT began showing an intermittant fault
yesterday. Sometimes the screen contracts a bit and comes back with wrong
colors. An example is that the screen turns very blue, and you can see the
diagonal vertical retrace lines in blue running over the ...

This flatscreen model GWT-P42M303 shorted the 15v and I isolated it to
pn 4921QP1002B. There are two of these driver hybrid thingees and one
is shorted but finding parts seems to be a problem. Any ideas?

Just upgraded from an old analog tv to a Samsung DTV.  The first
problem I noticed is the lip sync audio-to-video time delay on NBC's
national digital programs.  While analog broadcast has some small time
delay, digital has 2x-3x more delay, making it almost impossible to

Buy HP Laserjet Printers- 3050 All-In-One, Xerox Printer Model No: PE
220, Xerox Printer Model No: Workcentre 3119, Xerox Phaser Model No:
6110MFP CPS, Xerox Phaser Model No: 6110MFP CPSF, Xerox Phaser Model
No: 3125 PS, Epson Printer, Scanner & Copier - Model No.CX5900, Epson

I'm wanting to install some solar powered landscape lights but I don't
like the orange colored LEDs or the bluish tint of the so called white
LEDs.
I was thinking of buying some of the solar lights advertised as super

 I just got a used Tektronix TDS 540 o'scope.  I was advised that
these had a huge problem with leaky caps.  Before I had it, it was
explained to me that the panel lights lit up, but the screen didn't
show anything.  In asking the owner of a repair shop what he'd

My son has an E-Machine T3828 that will not power up.  Unfortunately he is
around 100 miles away so I do not have more information. There were no
changes made to the PC that might have caused this.
At first glance it is easy to blame the P/S itself, but a new replacement

I recently installed a DVD drive into my PC. (2 days ago.) Since then,
I get spontaneous power loss periodically - sometimes seconds after
booting, other times after hours of operation. I've tried replacing
the power supply, and I've tried removing all my hardware (other than

I have a 10 year old 32" Magnavox that pincushions intermittently.
If you smack the housing it usually has an effect on the condition so
I suspect a connector or other hardware problem.
Before I actually tackle taking this 200 pound TV apart I thought I'd

Looking for  a schematic of input converter of this MP6 series supply,
MP6-xx-xx.
Would anyone have it?
Ziggie

!I tried one of those online survey sites about 4 months ago that
say all you have to do is spend a couple of minutes filling out
some surveys and you will be making hundreds a day..... YEAH RIGHT, I
didn't make anything.

If any one want help in creating PCBs or electronic circuits or
projects visit www.techknowl.com

I have a Cotter Pre-amp circa 1982 that is in need of repair.  The
interlocking push-button switches are failing.  Does anyone know of
either 1) a place that repairs Cotter amps or 2) a supplier of the
switches used in the cotter pre-amp?