Re: Need tips in fixing APC 1500VA UPS having buzzing noise
So, you have changed the caps and you have changed the batteries, and it still remains, correct?
Just a wild tip, are all the power connections (cables, joints etc. from batteries to board/transformers) OK? Because dying batteries increase their internal resistance, and if there is some transitional resistance somewhere, maybe it has the same results.
So, you have changed the caps and you have changed the batteries, and it still remains, correct?
Just a wild tip, are all the power connections (cables, joints etc. from batteries to board/transformers) OK? Because dying batteries increase their internal resistance, and if there is some transitional resistance somewhere, maybe it has the same results.
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