on sharp model 65dr650 rear proj. t.v is ther a simple test i can perform to tell whether my lamp or color wheel is bad...any way to tell difference between the too by a simple test....or maybe i can get brief description what to look for between the too....
Ballast Lamp provide back light in DLP TV and if its bad / broken TV wont power up. If lamp is weak, dark or less bright picture will come in screen.
Color wheel is responsible for colors in picture and if its broke, TV wont power up and common problem with color wheel is high pitch noise while it spins.
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