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Old 07-28-2012, 08:48 PM   #6
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Default Re: Need tips in fixing APC 1500VA UPS having buzzing noise

I do not see 20uf rating on that spec sheet. It is a general purpose Metal Polyester film, page 6 is the one you need to look for in other cap spec.
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Basic LCD TV and Monitor troubleshooting guides.

Voltage Regulator (LDO) testing:

Inverter testing using old CFL:

Tear down pictures : Hit the ">" Show Albums and stories" on the left side

TV Factory reset codes listing:
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