"GAGI-9A6AAG" wrote in message
...
hi

i am interesting where i can find some sort of "most common" electronic
circuit diagram of typical PC motherboard, no matter if it is S478 or S462
type...

i am interesting in troubleshooting motherboards by electronic way...like;
checking usual malfunctioning resistors, transistors(fets) or regulators
and DC2DC convertors and regulators...

about measuring and replacing capacitors i already know (been there-done
that)...i want to get a bit deeper into repairing motherboards...

also could be some help if you point me to some sort of block diagram
wich shows usual and most common way of power supply circuits on mobo's
and other circuits wich are usualy goes down, get burned,
malfunctioning...etc...

i got mostly all necessary equipment for measuring (multimeters digital
and analog, ESR meter, LFC meter, R/C meter..etc..), also tools like
Weller iron solder Magnastat inc. hot air soldering station...except
scope wich is very old (1969.) and got only 8MHz (Hameg HM207)..so its not
so usefull, but it works fine for svereal basic tests...

just for info; i am hobbist in electronics (beside HAM radio operating)

thanks a lot in advance for any kind of help and tips&tricks...

Gagi , 9A6AAG fm Croatia



One of the places I worked, we had schematics for the standard PC
motherboard we were modifying for our prototypes, but it was a proprietary
document protected under a NDA. Your best bet is to look up datasheets for
the parts in question, they usually contain example circuits which will be
very close to what you find.