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Just had a flat screen plasma installed in our office. When it is powered from the outlet the screen rolls. When it is powered from a small UPS it stops rolling. The electrician said that it is not his problem.

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Hes right its not...whoever wired the building is responsible for the wiring, he did his job installing the tv where you plug it in is up to you

Posted on Dec 06, 2008

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It sounds like you have some piece of equipment in your office that is radiating AC interference back into the power line. The UPS would act like a filter to clean it up, but the set's power supply is affected when you power it directly from the line. One option is simply to leave the UPS there for the TV. Another option would be to try to determine where the interference in coming from. Find out what other equipment is on the same circuit as the TV and shut each item off one at a time until you see the TV clear up.

Posted on Dec 06, 2008

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