On Wed, 15 Aug 2001, Chad Fernandez wrote:
> I remember having a hard time bringing the computer up one time. I
> think all I did was push down on the memory chips to get it reliable
> again. Since this much time has passed, it might be a good idea to pull
> the socketed ram chips and clean them. I have heard of some Apple //
> guys using some sort of cleaner on chips.... I think it was something
> like TarnX, or something found at the grocery store. Maybe Tony could
> recommend something, too.
Before even cleaning chips (the sockets in the PC are not quite as bad as
the ones that Apple used), start by removing the Six pack, disk
controller, and everything else from the bus except the video card.
If that doesn't help, then remove the three rows of socketed memory chips,
so that the only memory is the soldered in row. If it is working, then
you will get a beep pattern complaining ab out memory, since the current
quantity doesn't match what the switches are set for. But THAT would be a
definite improvement!
If necessary, you could even remove the BASIC ROMs, leaving only the BIOS
ROM.
How are the voltages from the power supply?
WHICH kind of video card is in it? CGA? MDA? Is the monitor the right
one for the card?
Depending on your level of expertise (sorry if I/we have assumed
incorrectly), try a P.O.S.T. card (or manually with a probe), to see if it
got that far.
--
Grumpy Ol' Fred cisin_at_xenosoft.com
Received on Wed Aug 15 2001 - 11:36:06 BST