Electronics Repair

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Lenovo FRU 13n2950 or 2951 fan spec

I need to replace a fan on the 13n2950 cpu cooler but I have no source of the fan specs as to a replacement. It does use...
4 comments posted 10yrs
posted by Mr.E
4 comments posted 10yrs posted by Mr.E

Pioneer SX-980 mode switch problem

Hi Folks, I bought a refurnished Pioneer SX-980 in pretty sweet condition BUT I have an issue with getting my left chan...
4 comments posted 10yrs
posted by 08springerwrm
4 comments posted 10yrs posted by 08springerwrm

SG3525 over warming

Hi there I'm repairing a variable smps based on SG3525 IC. the IC gets too hot and finally it burns away. what's the pro...
1 comments posted 10yrs
posted by alonerasool
1 comments posted 10yrs posted by alonerasool

Router sulks, then works.

On one of these groups, I posted about 6 months ago about the adapter for my router failing after a power outage. Appar...
18 comments posted 10yrs
posted by NONONObobbyburns1111
18 comments posted 10yrs posted by NONONObobbyburns1111

EVGA430 ARX PSU - ripple.

Does anyone know how much ripple/spike amplitude is acceptable on the outputs? Thanks for any help.
2 comments posted 10yrs
posted by gangprobing.alien
2 comments posted 10yrs posted by gangprobing.alien

HORN

Hella horn for an intermittent alarm. which pin is ground ? how tell ? is either pin grnd-pwr ? https://photos.google.co...
5 comments posted 10yrs
posted by avagadro7
5 comments posted 10yrs posted by avagadro7

What's wrong with computer speaker?

I have a pair of computer speakers and the left? one, the one not directly connected to the computer, makes no sound. T...
10 comments posted 10yrs
posted by NONONObobbyburns1111
10 comments posted 10yrs posted by NONONObobbyburns1111

60's-vintage motor overload heaters

http://imgur.com/yIx0dC6 Original on the left, purchased replacement on the right. Questioning whether these are equiva...
4 comments posted 10yrs
posted by not
4 comments posted 10yrs posted by not

Want to build resistor..

This resistor is very simple. It will have stereo RCA in and out, and 1/8" mini in and out. All it will do is attenuate...
9 comments posted 10yrs
posted by thekmanrocks
9 comments posted 10yrs posted by thekmanrocks

Subarrier FM radio

Are such radios sold in the USA via the internet? Is the station really "fixed"? Someone gave my uncle a radio which is...
21 comments posted 10yrs
posted by vjp2.at
21 comments posted 10yrs posted by vjp2.at

TImer switch sicks

I think the reason my (spring wound) bath fan timer switch sticks is when I reset it, ie, change it form say 20 min to...
2 comments posted 10yrs
posted by vjp2.at
2 comments posted 10yrs posted by vjp2.at

Scopes, Horizontal Deflection

Now dammit, I know how a ramp generator works and I know how a relaxation o scillator works, which is what the ramp gen...
4 comments posted 10yrs
posted by jurb6006
4 comments posted 10yrs posted by jurb6006