Buying Sony KP-57WS520 57-Inch Hi-Scan 1080i HD-Ready Projection TVPower Supply issues hurt picture qualityBy RuinedIt seems the power supplies on these units fluctuate in quality. While some have reported no problems, myself and some other in the HT forums have found that these sets have power supplies that fluctuate in quality and/or are simply very vulnerable to RFI interference.I took delivery on a 57WS520 and right away I noticed the picture had "snow" in it on dark backgrounds, even when the set was not hooked up to any source and even when the set was hooked up to a double conversion UPS (meaning it was running off a battery to ensure clean power on my end)! ... »» Read more about Sony KP-57WS520 57-Inch Hi-Scan 1080i HD-Ready Projection TV.
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