Samsung HLN467WX/XAA Picture Freezes

I have a Samsung HLN467WX/XAA that the picture freezes to black and white
snow after about 15 minutes of being on. When it freezes the power,
channel, menu, and volume buttons do not function. The sound continues to
work, and it will eventually turn off the lamp and allow the fans to cool it
down. I have also had it just shut down within 2-3 minutes of being on, and
the timer & lamp lights were flashing green, and the temp light was flashing
red. All fans are working, the color wheel was replaced about 6 months ago,
and the bulb was just replaced a couple weeks ago. Any thought on what it
can be? I have read that the light engine is the problem, but what in the
light engine causes this? Is it a repairable part? Thanks


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