Need help with Grid 386

From: Joe <rigdonj_at_intellistar.net>
Date: Wed Feb 7 13:45:37 2001

Hi,

    I just picked up a Grid 386 laptop (model 1530) and it has a strange
problem. It powers up but dies after a few minutes. It just starts acting
flaky and locks up. If you turn it off and back on, the screen stays blank
and it beeps but that's all. I have to let it sit for 1/2 hour or so before
it works again. It passes all diagnostics before it crashes. I've opened it
up and reseated all the removeable ICs. I also checked for overheating but
nothing is even getting warm. Does anyone have a copy of the errors that go
with the beep code? It has 2 Mb of RAM (8 SIPPs) in it. Which ones are in
bank 0 and which ones are in bank 1?

   This laptop came out of Martin Marietta and has some really cool
software on it. It was used to test the gimbal system used for the IR night
vision and laser targetting system on the Apache helicopter. The laptop was
connected to the gimbal and would read out all the steering commands and
the actual positions from the synchro resolvers. This device was a lot more
usefull than you would first imagine since cables and connectors that were
routed through the gimbal were very prone to intermitant failures and this
could be used to pinpoint at exactly what angles the problem occurred.

   Joe
Received on Wed Feb 07 2001 - 13:45:37 GMT

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