Electronics Repair

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Sharp 28LW92H

Hi Everyone, Does anybody have the power supply diagram for the above television or know what value the R152 resistor sh...
1 comments posted 18yrs
posted by no
1 comments posted 18yrs posted by no

Possible to modify a WalMart audio/video selector?

I'd like to modify one of these A/V selectors like you find at WalMart - has 4 in & 1 out plus a 1/8" stereo headphone...
5 comments posted 18yrs
posted by docsavage20
5 comments posted 18yrs posted by docsavage20

ROHS Myths

http://www.edn.com/article/ca6477864.html?nid=2431&rid=1854043180 Bob
5 comments posted 18yrs
posted by sound
5 comments posted 18yrs posted by sound

Sony KP53HS10

Help, I am getting a red image of what is playing on the screen and then a green image of what is playing on the screen...
2 comments posted 18yrs
posted by NicholasPaulBailey
2 comments posted 18yrs posted by NicholasPaulBailey

Heat Furnace thermostat schematic?

A 5 year old RiteTemp 8030 thermostat started mis-behaving the other day. It would go into a heat cycle and keep on goi...
4 comments posted 18yrs
posted by cmdrdata
4 comments posted 18yrs posted by cmdrdata

Home made valves

Interesting bit of footage here of a guy making his own vacuum tubes http://dailymotion.alice.it/video/x3wrzo_fabricatio...
15 comments posted 18yrs
posted by ron
15 comments posted 18yrs posted by ron

Bent trace on a Tek 465 scope

I have a very old Tek 465 scope that I picked up many years ago in a surplus sale. It works just fine, but it's always...
1 comments posted 18yrs
posted by graftonfot
1 comments posted 18yrs posted by graftonfot

peavey valeking amp

Hi, My new peavey valveking 212 amp sounds muddy. I want more presence and clarity. I have looked at changing the tubes...
1 comments posted 18yrs
posted by drake_m1
1 comments posted 18yrs posted by drake_m1

infared amplifier/splitter

I just built an entertainment center that has solid doors. We don't want to see our equipment, not that its so hard to...
11 comments posted 18yrs
posted by captainvideo462002
11 comments posted 18yrs posted by captainvideo462002

Panasonic Dot Matrix Printer

Model KX-P1124. The rubber strip [3/8 X 15 inches] which backs up the paper under the print head has finally deteriorat...
6 comments posted 18yrs
posted by john.keiser2
6 comments posted 18yrs posted by john.keiser2

"tp clean" message from cassette player = ???

Hi, Every time I put a cassette into the tape player in my truck, I get a message on the led saying "TP CLEAN". 'What d...
10 comments posted 18yrs
posted by user132384
10 comments posted 18yrs posted by user132384

How much does speaker polarity matter?

Hello all... I recently installed a radio and stereo speakers in my car. The speakers were a trashpicking find and they...
92 comments posted 18yrs
posted by wm_walsh
92 comments posted 18yrs posted by wm_walsh

Datum Efratom LPRO Rubidium Lamp removal

Hi all, does anybody out there have any experience in replacing the lamp on an LPRO rubidium oscillator? I have two of...
3 comments posted 18yrs
posted by antonio.iovane
3 comments posted 18yrs posted by antonio.iovane