Loud noise coming from back non stop, picture is there but not clear as far colors and stability, noise doesn't stop until I turn off TV and goes away within seconds, and comes on when TV on, noise so loud that I cant hear the show but the picture is not clear anyway. Please any idea that will help me solve this problem.
This sounds like you may have a bad color wheel. If you want to change this yourself you need to be aware that even with the tv unplugged there are still dangerous voltages in the set.
Changing the color wheel is an involved repair the wheel it's self is very fragile to handle, they can be purchased on line from many sources.
The cost from a service center would be a normal service charge plus about $150.00 for a color wheel. If you have a service center come out to your house explain your problem clearly and they will know they need to bring a color wheel, it will prevent the tech from having to make a second visit.
If you could describe the noise a little better, i may be of more assistance- if the noise is coming from back, look in the back through any vent holes or any visual acces you can find, in a darkened room- look for arcing, sometimes very obvious, sometimes not much more than a bluish corona around the high voltage wire or at the connectors.
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