There is a really loud whirring noise from behind the set when it comes on, it doesnt always come on the first time, and now the screen goes green randomly.
The Color Wheel in the Optical Engine is what is most likely causing the problem. It is a very expensive part and I would call Toshiba at 1800-631-3811 and see if they could help you with the cost and also referring a Service Repair Facility to you.
I hope this helps,
Skyassoc
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