Electronics Repair

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Marantz ST300 tuner

Hi, a Marantz ST300 arrived in good cosmetic condition and all lights working - but no audio from either AM or FM. Prob...
2 comments posted 10yrs
posted by pallison49
2 comments posted 10yrs posted by pallison49

Sony KSS240A laser assemblies (heads)

I've got an Arcam Alpha 8 CD player with a somewhat tired laser, the player has started to skip on occasion and checkin...
8 comments posted 10yrs
posted by someone
8 comments posted 10yrs posted by someone

video projector, lamp or high power ps problem ?

Hitachi CP X327, 3xLCD & discharge lamp, unusually the full component level sm is out there. As the lamp repeatedly str...
1 comments posted 11yrs
posted by diverse
1 comments posted 11yrs posted by diverse

lost one channel on an old Onkyo amplifier

I have an old and extremely heavy Onkyo stereo amplifier that I use in the basement in my workroom. I bought it years a...
6 comments posted 11yrs
posted by timothy42b
6 comments posted 11yrs posted by timothy42b

Clogged laptop heat pipe and fan

HP Envy m6 laptop (with AMD A10 processor), which arrive with a bad case of overheating. Here's what the radiator grill...
24 comments posted 11yrs
posted by jeffl
24 comments posted 11yrs posted by jeffl

Vero GK60 trivolt PSU repair

Hi, The GK60 trivolt PSU takes a DC input (20V to 70V) and has three outputs (a ll adjustable), rated 5V @ 6A, +12V @ 1...
0 comments posted 11yrs
posted by john_a_s2004
0 comments posted 11yrs posted by john_a_s2004

DIODE confusion

http://ecetutorials.com/wp-content/uploads/2013/10/diode-symbol.jpg I'm reading isolating 12V fields with a diode place...
10 comments posted 11yrs
posted by avagadro7
10 comments posted 11yrs posted by avagadro7

Diode On Small dc Toy Motor: Why ?

Hi Folks, I'm not an EE, so would really appreciate someone educating me a bit on this. Trying to fix kids toy. Very si...
6 comments posted 11yrs
posted by rgsros
6 comments posted 11yrs posted by rgsros

Tropical Fish

Does anyone know how tolerant these are to over-voltage? For example, would one rated at 250V be able to handle 260V - 2...
9 comments posted 11yrs
posted by curd
9 comments posted 11yrs posted by curd

HP 339A Info

One has come in to our realm. We do some high end audio so having something like this desirable. It was bought surplus...
20 comments posted 11yrs
posted by jurb6006
20 comments posted 11yrs posted by jurb6006

Traco TXL 060-0533T PSU repair

Hi, I've just fixed one of these 60W power supplies. This has triple output (+5 V, +15V, -15V). Fault was -15V output g...
0 comments posted 11yrs
posted by john_a_s2004
0 comments posted 11yrs posted by john_a_s2004

Pholips coolshave charger.

Recently my Philips coolshave started not giving many shaves per charge - as luck would have it, I'd just salvaged a pa...
6 comments posted 11yrs
posted by gangprobing.alien
6 comments posted 11yrs posted by gangprobing.alien

Solid State relay kills induction motor fans

I set up a thermostat in my garage that comes on at 80 degrees F. and sends a 6 VDC battery voltage to control a 120 VA...
26 comments posted 11yrs
posted by pyroartist.dw
26 comments posted 11yrs posted by pyroartist.dw

Kodak Carousel 860H Projector

Hello, all. After 20+ years of home storage, I finally fired up the subject slide projector (Kodak's top-of-the-line in...
3 comments posted 11yrs
posted by arl_123234
3 comments posted 11yrs posted by arl_123234