> My VaxStation 3100m38's power supply is failing. It will run for about an
> hour or two before turning off. Cycling the power turns it back on. My
> question is does anyone have a spare one of these power supply's that they
> would be willing to sell to me?
> Thanks.

Things to try with power supplies that work, but don't seem to last.

Symptom... power supply dies with time

Cause...   most likely due to heating internally in the power supply
           around critical parts, causing shutdown of the supply.

Fix...     completely disassemble the chassis down to bare metal cases
           and boards and remove the power supply.  Blow/brush out dust
           bunnies and residual dirt.  Reassemble and retry.  TAKE CARE
           TO ASSESS THAT ALL FANS ARE PROPERLY RUNNING.  Replace any
           fans that are slow to start or making any dragging sounds
           or that are not spinning up.

Good LUck

Bob