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Old 09-12-2021, 04:11 AM   #45
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Join Date: Dec 2009
City & State: Prague, 504'52.22"N, 1423'30.45"E
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Default Re: Powerware 9120 Online UPS

Don't bother with the large caps, those rarely fail (unless there's like 80+ C and you use for for decades 24/7).

You can try to replace KME with LE, they have slightly lower ESR but still higher than low-ESR series do, that may work OK.

Doesn't the UPS drive the fan by its own regulator?
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