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Highly likely that the sound was coming from the bearing in the color wheel assembly. When the bearing fails, the color wheel cannot spin at the correct speed, and because the speed is measured by the control board, the TV will shut down.
If you can handle a screwdriver - entire color wheel assembly can be replaced for about $100 and 30 minutes of your time.
If your car has a mas air flow sensor (usualy located right aroung air filter or in air passage after the air filter) check and clean the sensor. This looks like a small spring on the end of 2 wires. BE CAREFUL not to damage the sensor. I have seen where the sensor gets dirty over time and this can cause a rough idle.
It seems that the "backlight" has gone bad. "Backlight" is the device that allows to see the picture in an LCD TV, when they are about to go bad the symptom that you describe is very usual. It depends on the tv manufacturers and model to expect how long the "backlight" is going to last in a tv.You can shop around for a replacement part and try to do it yourself or take it to an especialized technician. Good luck..
(Probably too late to help you, but I'll post so others can see)
I had the same thing happen to my trust AVR-881 two weeks ago. Even re-initializing the processor was no help.
I took it to the repair shop. They replaced three transistors on the board, and charged about $175 for the job.
sounds like your timimg is off either by a tooth or at least a few degrees, does it make a rattling sound when you come on to the fuel hard? Also check to see if your coolant level is going down if so you could have a bad head gasket.
those tvs will try 3 times before completely shutting down. you can try and take the back off and check CP150 it is a large capactior located near the middle of the board on the left hand side(looking from back) if it looks and feels like the top is vented or puffed out then that could be the problem. if not i suggest having a qualifiedservice tech take a lookbecause there are too many things that could be the root cause.