Electronics Repair

Carlsbro Keyboard 150 , 15 inch combo from 1985

TO220 devices marked 40871 and 40872 and also SM are presumable RCA40871 /2 , anyone happen to know what the TO3 device...

2 comments posted 13yrs

posted by diverse

2 comments posted 13yrs posted by diverse

Ceiling light assistance

Hi and help! I have removed a ceiling light I have previously replaced but this time it's gone wrong! I can 't get it w...

4 comments posted 13yrs

posted by unbeliever1865.b7d0468

4 comments posted 13yrs posted by unbeliever1865.b7d0468

Renovating gang switches

Confronted with a huge Rotel amp from mid 1970s. Function switch, interlinked S/R ganged switch, 5 gang, each of 4 pole...

3 comments posted 13yrs

posted by diverse

3 comments posted 13yrs posted by diverse

Vizio 42" LED TV No backlight, blows fuse

Hi; This is a Vizio M420NV. Backlight was out, I found an open 3A fuse (TF1) on the main board that carries 12.4 vdc. W...

5 comments posted 13yrs

posted by wwspage

5 comments posted 13yrs posted by wwspage

Programmable stepper control help please

I posted the message below in SEB and then though that maybe it should have been posted here too. So here it is, slight...

1 comments posted 13yrs

posted by etpm

1 comments posted 13yrs posted by etpm

Another Attempt, Dell Optiplex SX260 Computer Won't Boot Up

Hi, Regarding that small Dell Optiplex SX260 desktop type computer that uses an external power supply that won't "boot...

0 comments posted 13yrs

posted by jaugustine

0 comments posted 13yrs posted by jaugustine

soldering on a connector, and then getting the top on.

soldering on a connector, and then getting the top on. The tv amp required soldering a 1/8" jack on one set of wires an...

5 comments posted 13yrs

posted by NONONOmisc07

5 comments posted 13yrs posted by NONONOmisc07

TV speaker amplifier

Well, last night, I finished the first draft of the amplifier for my bathroom tv speaker. Thanks for the advice earlier...

10 comments posted 13yrs

posted by NONONOmisc07

10 comments posted 13yrs posted by NONONOmisc07

Workman-like make of valve/tube sockets?

That last more than 5 years before the gap in the socket pin opens up enough to break contact on the grid pin? octal EL...

8 comments posted 13yrs

posted by diverse

8 comments posted 13yrs posted by diverse

8-pin SIL dual op amps

Hi, anyone know of a reasonably easy to obtain 8-pin SIL op-amp? Trying to replace an NJM072BL, but these are difficult/...

8 comments posted 13yrs

posted by sound.service

8 comments posted 13yrs posted by sound.service

LED lightcurtain / christmas tree lights

KAM LED lightcurtain control box dropped and now no function. DC rails are right , not yet checked crystal and 555 sub...

3 comments posted 13yrs

posted by diverse

3 comments posted 13yrs posted by diverse

Lilfe in the slow (repair) lane.

I need a rant... Is hardware becoming more complicated, users becoming more clueless, or both. I get a panic call from...

46 comments posted 13yrs

posted by jeffl

46 comments posted 13yrs posted by jeffl

mold forms on cords, knobs, and tool handles

My shop is in my basement, which has always seemed to be a very dry floor. However, about 4% of my cords, my spare radi...

107 comments posted 13yrs

posted by NONONOmisc07

107 comments posted 13yrs posted by NONONOmisc07

Where can I buy TAIYo makes good USB cables?

I just bought a solid state external hard drive, but the USB cable that came with it is only about 1 foot long. I have...

10 comments posted 13yrs

posted by nestork.b732128

10 comments posted 13yrs posted by nestork.b732128

Programming a Dranetz 626

Acquired a basic 626 power analyzer. After fixing up the thermal printer -- which works fine now -- I want to program t...

9 comments posted 13yrs

posted by invalid

9 comments posted 13yrs posted by invalid