22 Jan
2008
22 Jan
'08
12:55 a.m.
Hello all,
I have an IBM PC, 5150, 16-64KB motherboard, that appears to be dead. Power
on produces no display or disk activity (even after a while), and no beeps
from the speaker (I tried a couple of speakers, so I
don't think it is a
speaker issue.
From what docs I found on the internet, the switches
are set up properly for
the machine's configuration...
I am pretty sure the motherboard is getting power. I checked at a RAM
socket, and all voltages were there, and well within specifications.
The problem is, I'm not sure where to go from here. I have NO schematics,
and haven't ever troubleshot a 5150 before.
I DO have a good meter, and a scope (and I know how to use it!)
What would be the first things to check?
Thanks for any help!!!
Rich B.