When you turn this tv on the screen comes on and then about 5 sec later the backlight turns off. I have used a flashlight to look at the screen and the image is there just the backlight goes out. any thoughts?
First, check the power supply for the backlight. It's usually a 24 volt supply. Look for swollen caps. If that is ok, go to the inverter board and inspect for damage, ohm out the inverter transformers. Last is to test out the lamps seperately with an external inverter. If a lamp goes out this way, it is bad and causing the whole backlight to go out.
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