screen starts to flash with a white background like a photo negative. Gets so severe then shuts down tv. hdlp50w151yx1 any repair thoughts or has anyone dealt with this. bulb seems fine wheel looks a little dirty but dont know what to clean with was going to use contact cleaner but haven't tried that yet scared it may damage more.
Light engine is bad most likely. Had almost same problem with a RCA HD50LPW175yx1. Mine started at first when it was turned on but would clear up, after awhile it took longer and longer until it never cleared up. Mine had a whitish sometimes grayish distortation in picture, even sometimes only portions of screen would be distorted. However mine never shut down though. Good news, if any, is that a new light engine also consist of a new color wheel. Sad part is that mine started after 1 month from purchase and the replacement light engine lasted 2 months after a 4 month backorder. However, with that said, a bad bulb sometimes will do unusual things, the set shutting down makes me think it could be a failing lamp. A new lamp is the easy and cheapest fix, a light engine could cost around 1000.00 (US) and you might be better to by a new, better model for as much. With my past experience I would buy a lamp if you could return it if it doesn't work and/or buy a new non RCA tv.