HP2100 help requested

From: Jay West <west_at_tseinc.com>
Date: Sun Feb 27 10:28:04 2000

One of my 2100's has developed a problem. It was working fine for some time,
but was only powered up occasionally. The problem started when I ran some
burn-in diags over several days. The machine started acting funny, and when
I powered it off and back on, there's no front panel display at all - no
lights. However, all the fans come up, one of the internal boards that has
an on-board led is lit, and I checked all the outputs of the power supply
and they're just peachy. I moved every single card (including the front
panel) from the bad system to another system and it then runs fine so I know
it's not any cards. I suspect the power supply, but as I said all the
outputs appear good. Gawd I hope nothing happened to that wire-wrap
backplane.

Can anyone offer some advice? I'm starting to pour over the schematics on
the power supply - wondering if something is amis with the poweron or
powergood signal perhaps but I don't know much about it.

Any tips most appreciated!

Jay West
Received on Sun Feb 27 2000 - 10:28:04 GMT

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