[Info-vax] rx2620 power supplies / VRM voltage low

[Steven Schweda]

> Anyone else had problems with rx2620 power supplies?

   Not I.  rx2600 is my newest, and it's too noisy for more
than occasional use.

> The iLo MP shows a message like "VRM non-recoverable voltage
> low - check all boards at this address".  VRM's - voltage
> regulator modules - are on the motherboard and generate
> regulated voltages from the output of the power supplies.
> 
> Swapping out the power supply resolves this.  Over and over
> again.  We get about a month out of a supply.

   Has anyone considered the possibility that the VRMs "on
the motherboard" are bad, and not every main power supply in
the world?  I know nothing, but I can imagine a case where a
fresh power supply might be just barely able to overcome a
faulty VRM, but not for long.  Swapping main power supplies
may be much easier/cheaper than swapping VRMs, but how many
bad main power supplies do you think are out there?

   How much would a whole spare system cost?