Electronics Repair

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ISO oddball cooler (or repair thereto)

Hi, I've got a SunPCi II (coprocessor board) that has a noisey cooler. So far, I've not been able to find a direct repl...
4 comments posted 17yrs
posted by not.going.to.be
4 comments posted 17yrs posted by not.going.to.be

Sumsung monitor intermittent startup

Hi, Samsung 931B LCD Monitor Monitor and computer are switched off overnight. In the morning I switch on the monitor an...
8 comments posted 17yrs
posted by nospam
8 comments posted 17yrs posted by nospam

Euphonic Adio iamp 350,2001

Just curious in passing, anyone know why there is a 555 in there, on the pa/ps? delay-on or delay-off timer perhaps? --...
6 comments posted 17yrs
posted by diverse
6 comments posted 17yrs posted by diverse

wireless doorbells

I'm wondering if anyone has any experience with wireless doorbells. The last couple of days mine has been ringing a cou...
31 comments posted 17yrs
posted by dennism3
31 comments posted 17yrs posted by dennism3

LED display (MAN6730) problem

Hello, I am just repairing a fairly old instrument (manufactured in 1989) which employs two LED displays (driven by ICL...
10 comments posted 17yrs
posted by optophone
10 comments posted 17yrs posted by optophone

Sherwood tuner died.

Hi All, I have a fairly old but lightly used Sherwood R 125 RDS ss FM receiver but note the FM tuner has died. Well, it...
20 comments posted 17yrs
posted by news
20 comments posted 17yrs posted by news

Crate GT-80 amplifier..

I have determine that the power supply transformer in a Crate GT-80 needs replacing. This becomes obvious when you remo...
1 comments posted 17yrs
posted by jamie_ka1lpa_not_valid_after_k
1 comments posted 17yrs posted by jamie_ka1lpa_not_valid_after_k

Split HEX files..

Hi guys! Please i need support! I have an hex file and i need to split it in low bytes and high bytes. My eprom program...
19 comments posted 17yrs
posted by formula1vhs
19 comments posted 17yrs posted by formula1vhs

Cannot touch bottom left of 4-wire touch screen

Symptom: When moving up and down the left side of touchscreen, it inputs an arch running from the top left to the middl...
8 comments posted 17yrs
posted by adam
8 comments posted 17yrs posted by adam

Good Will GPS1810OH Power supply problem

I have an old GPS1810OH Power supply and I wanted to know if any of you might have one on your bench... Mine has a semi...
19 comments posted 17yrs
posted by samantha
19 comments posted 17yrs posted by samantha

Acer 5520 won't power up?

An Acer 5520 notebook. Press power, the notebook powers on for a couple of seconds then powers off by itself. Then (wit...
7 comments posted 17yrs
posted by peter2
7 comments posted 17yrs posted by peter2

ABI CMOS/TTL etc tester / Coutant RL 150/100 SMPS

Went to use it this week , first time for ages and not a dickybird, no magic smoke/ ominous noises. Just single cycle s...
3 comments posted 17yrs
posted by diverse
3 comments posted 17yrs posted by diverse

How long does a resistor last?

When run at its rated power? I'm referring to 1/4 - 10 watt resistors in TVs and PC power supplies, probably in 30-50 C...
26 comments posted 17yrs
posted by larrymoencurly
26 comments posted 17yrs posted by larrymoencurly

identifying transistor

Hello all, I need to replace a transistor which only markings are the motorola logo and "9570". It's TO-92 case and NPN...
9 comments posted 17yrs
posted by frank
9 comments posted 17yrs posted by frank