Remove the mainboard from the case, carefully examine all electrolytic
capacitors for bulging tops or leaking electrolyte. NEVER enable PSU by

jumping the green to ground while it's connected to the mainboard. If
the
mainboard doesn't want to start, it has a good reason. Try the
mainboard on
the desk with only the Monitor, PSU and Keyboard connected. If you
still
have no luck, and even if you see no problem with the caps, I would
still
suspect them anyway. From what you say the CPU and memory are OK, The
PSU is
OK that only leaves the Mainboard.


- thanks for the input. i inspected capacitor, nothing bulging out. i
dont have an esr meter, only ohmeter but it would be difficult to test
capacitor in- circuit... and i think desoldering a suspected caps in
the mainboard would be a difficult tastk.

new progress..

remove the mainboard from the case. connected the memory and cpu, then
connect to the monitor. turned on, yes it powered up but after the
monitor got a display for a few seconds only, maybe 2 sec, it shuts
down. repeat the test and achieve same result. what causes the computer
to shutdown?bad/shorted motherboard?

thanks,

ian