I just got this tv today and it appeared to have no backlight on. After taking off the rear cover and checking again in the dark I can see that MAYBE one quadrant is lit.. But still it's quite dim. I was going to check the LEDs with my tester, and I found LED 1 and LED 2 + pins on the wire from the inverter, but I couldn't identify a ground. Nonetheless I tried using a mounting screw on the inverter board and also the chassis as ground but regardless my tester reads 300 which is what it reads when there is no voltage draw.
I don't know how exactly to test the inverter itself. Is it likely that 3 quadrants do in fact have bad leds? Or could the inverter be bad? I see backlights available on both SJ and eBay which is usually a good indicator that they are a common failure.
I don't know how exactly to test the inverter itself. Is it likely that 3 quadrants do in fact have bad leds? Or could the inverter be bad? I see backlights available on both SJ and eBay which is usually a good indicator that they are a common failure.
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