Electronics Forum / Repair / November 2004

The customer who brought this set in said that for the past month
intermiitently he would see about four inches of black,(whether it was
compressed or just like a blanking problem I don't know) appear on the
top of the picture. This was sometimes accompanied by "popping"

www.techniciansclub.com

Hi I have picked up an InFocus LP420 projector which appears to have a psu
fault. The lamp is new and the unit was working for about 1 hour and then
cutting out. Now the fan starts up and sounds as if the voltage is
increasing and decreasing. I have opened the unit and resoldered ...

have 35"mitsubishi with no color when cold. if you heat up around the ic
201 0r caps along side of it color comes on froze cap c-216 color came on.
changed cap and does same thing with new as old.esr all caps and they pin
the needle. changed ic201, 358 crystal. even had another ...

I've got a couple of IBM 3151 terminals that are getting dim and out
of focus.  I want to open the case to see if there are any internal
brightness/focus pots that can be adjusted. (I am aware that internal
voltages can be hazardous and will take precautions.)  However, I

My Mitsubishi CS-35601 has a bad PIP board. Replacing all the caps is beyond
my level of incompetence, but I think I could handle making a bypass.
Searching newsgroups and the web I found a few different configurations for
the bypass and I would appreciate some help in making ...

all is in the title

Hi y'all
I was searching the web for some information on PAL-N (Argentina) and
PAL-Nc (where?). What I got was this:
PAL (Combination N) [country?]

I have Panasonic KX-TC1175BXB cordless unit. The portable unit shows out-of-range.
How can I repaire this.
Pls help.

Well, it's my own fault for feeling pleased with myself...
I repaired the PSU but the scope wouldn't come up.
Disconnected the acquisition board and it came up, diagnostics
complained about not having an acquisition board (surprise!).

I am interested in buying a handheld capacitor/inductor tester. I'm
looking at a Fluke model VC6243. The specs say it tests caps to
1000uf, and inductors to 20h. Anyone have suggestions or comments
about this meter, or another one I should be looking at. I mostly work

I have a shorted high voltage capacitor in a 10-year-old Sharp
Microwave oven.  Yeah, I know, it would probably be wise to replace
the oven but it's nicely built in, matches everything, and the custom
kitchen cabinets were built around it.  Seriously.  So I'd like to

I've a Zenith VCR/DVD combo. VCR is on, I insert a tape, the machine
refuses to play, and shuts off and gives me an " ERR " message. The
DVD side of the machine works fine.
Am checking " http://repairfaq.ece.drexel.edu/sam/tshoot.htm " but I

Sony 3 disc CD mini stereo model:HCD-RXD3.Both tape decks have
erractic operation meaning no play,rew,ff.Something is wrong in the
mechanics because when ever a function button is pressed you get a
clicking noise for few seconds of each press,the belts are fine.

  As I don't have the schematic for the subject monitor, would
anyone familiar with this type of beast be kind enough to point
me in the right direction as this is not my territory.
  The fault is that the power-on LED doesn't light and the