Question about Sylvania 6842PF 42 in. EDTV-Ready Plasma Television
Guess what you may have hit the nail on the head. Plasma TV used a balast type power system for the backlighting and that is what you are hearing. I would suggest getting this set looked at to see if the plasma excitor needs to be replaced (it may have another name in this brand of set).
Posted on Sep 21, 2007
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