Question about APC Back Ups CS 350 (252545) UPS System
Model 350Ei serial # 880441026423 made in Bengal,India
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Posted on Jan 02, 2017
SOURCE: beeping error
on the heatsink thats in front the fans theres six fet irfb23n20d mine had the outer two towards the fan short circuited.replaced them and all is well now.
Posted on Mar 14, 2009
SOURCE: APC ES350 strange noise
My solution was to unplug everything, hit the reset button, and then power the unit back up. The problem I found to be that I had my laser printer connected to the "surge + battery" side, and for some reason no laser printer can be connected to it.
Posted on May 28, 2009
SOURCE: Overload light in APC RS 800 UPS
it seems that the inverter circuit of your UPS is dying. the solution here is you have to open up the UPS and check the inverter circuit. to make easier, check the power mosfet if its leaking.
Posted on Aug 14, 2009
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