Bharat Ale <[log in to unmask]> wrote:
> PCBUILD Digest - 6 Jun 2001 to 7 Jun 2001 (#2001-159)Hi,
>
> The computer is Celeron 333. Whenever the main voltage fluctuates and UPS
> kicks in, the keyboard doesn't work any more. Either the keyboard has to be
> disconnected and reconnected again or the computer has to be restarted. Any
> suggestion as to what may be the problem ?

Sounds like 1 of two possibilities.

1.) Either the UPS monitoring software is messing something up when it signals
the PC that a power interruption has occurred. (Assuming you are using this
feature, is the UPS connected to a serial or USB port on the computer?) You can
probably test this by disconnecting the interface.

2.) The AC switchover is not clean, if this is the case, then about all you can
do is get a better UPS, one that doesn't glitch the output.


--
Russ Poffenberger               Engineering Specialist
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