Need more info:
- Does the LED on the unit blink or is it dark.
- You said you can here the unit power up, do you hear anything else, any type of click or fans running
Most common cause for a Rear Projection TV to stop working is the Horizontal circuit going out. THe cost of these components are in the single digit dollar range, but, the labor is where the cost gets high. To troubleshoot and repair these units could easily take a few hours. Try to find a local servicer that will be willing to do a eval at a fixed price, some will deduct evaluaiton from repair cost.
Here is a link to find a servicer:
click here
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