roger@banzai.UUCP (Roger Florkowski) (03/23/89)
I am having some strange hardware problems with a stock 3b1.
It has a 67meg hard drive and 2meg of ram.
The problem: unexplained crashes.
The symptoms:
Basically, the machine just stops. No error message
what-so-ever. No error messages in "/usr/adm/unix.log".
And there is no pattern to what I was doing at the time.
Usually I'm about to enter a command at the unix-prompt.
It has also frozen during Tape Operations. I'll notice
that the tape has been cycling for a long time, hit
the Resume key or Shift-Del, and sure enough, its
dead. It has frozen when formatting a tape, with
the same symtoms (the tape cycles forever).
BTW: Its not the tape card, as I have taken
it out since then, and the machine still freezes up.
What I have done:
When I power cycle the machine (after one of these
'freezes'), it comes up with a screen full of horizontal
bars, and all 4 leds are lit. The diagnostic disk will
not boot at this point either. Now, here is the fun part.
If I shut it off and 'bump' the machine, (gently hit it),
the machine boots up again. This obviously sounds like
a bad connection somewhere..... I've taken apart the
machine a number of times and checked all of the
cables/connections, removed them and put them back in
place, but the machine still freezes at random times.
Has anyone heard of this before? Any advice on what I should do next?
--
Roger Florkowski {uunet!uvm-gen, attmail}!banzai!roger
The People's Computer Company `Revolutionary Programming'