Rec'd this mobo as known dead.
Was formerly used with a Bestec ATX-250-12E Rev F1
Have tried to start with known good PSU which does not have an on/off switch
Symptom - PS-ON will not go low.
The mobo front panel header for Power on will not start mobo.
Took reading with mmeter across the two pins, only drops to 4.88V
Shorted pins 13,14 on ATX (2 x10) connector - can get the PSU,
in turn, mobo to start but the southbridge is getting very hot. Albeit I shut
the system down from the wall outlet before the s/bridge gets
totally fried, the mobo did appear to POST.
Next, using freezer spray, cooled down the s/bridge for sufficient
time to observe mobo behaviour. Only had diskette drive attached
with Memtest86 v3.3 utility - this all goes smoothly and will load
the utility from diskette into memory and starts testing memory.
I have tested the mobo to the extent, tested ATX (2x10) connector
for ground fault on pins 3,5,7,13,15,16 and 17 all ok
The Intel part FW82801EB SL73Z - is it known to have a thermal problem?
Is the board exhibiting problem consistent with over voltage problem per
Bestec failires?
Any insight, help, advice and guidance appreaciated
Was formerly used with a Bestec ATX-250-12E Rev F1
Have tried to start with known good PSU which does not have an on/off switch
Symptom - PS-ON will not go low.
The mobo front panel header for Power on will not start mobo.
Took reading with mmeter across the two pins, only drops to 4.88V
Shorted pins 13,14 on ATX (2 x10) connector - can get the PSU,
in turn, mobo to start but the southbridge is getting very hot. Albeit I shut
the system down from the wall outlet before the s/bridge gets
totally fried, the mobo did appear to POST.
Next, using freezer spray, cooled down the s/bridge for sufficient
time to observe mobo behaviour. Only had diskette drive attached
with Memtest86 v3.3 utility - this all goes smoothly and will load
the utility from diskette into memory and starts testing memory.
I have tested the mobo to the extent, tested ATX (2x10) connector
for ground fault on pins 3,5,7,13,15,16 and 17 all ok
The Intel part FW82801EB SL73Z - is it known to have a thermal problem?
Is the board exhibiting problem consistent with over voltage problem per
Bestec failires?
Any insight, help, advice and guidance appreaciated
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