I have a Sharp 80" TV that started giving me an error code, 1 short, 1 long blink.
I read that is a "Lamp / Inverter" error and am trying to figure out if there is a problem with one of the boards or with the LEDs.
I noticed that there was some light coming from the backlight section for a brief period after plugging the TV in while holding "Input" and "Vol -" at the same time. That only stayed on for a few seconds then shut off. It was enough time to put a meter on the leads from the power board (RUNTKB096WJQZ) L1 pin 1, 3 and 5 tested to chasse ground ~130 VDC. Each LED strip is 30 LEDs long and there are 15 strips on the backlight section.
I saw several videos and blogs where stacking up a bunch of 9V batteries would work to test the LED strips. So I separated the backlight section from the LCD panel to test the LED backlights. I tried 10 batteries = 90 VDC first but got nothing, then bumped up to 12 batteries 108 VDC (the batteries are brand new so it tests with a meter at 132 VDC).
Anyway, according to what I've seen and read, this should be enough voltage to power one complete LED strip, but am getting nothing, no light at all.
I am sure that the voltage is actually making it onto the strip because I tied the battery stack leads to the connector pins and tested across the little copper tabs on the strip.
Before jumping to the conclusion that strip is bad, I tried another strip, same result, nada. So I am guessing that I'm doing something wrong.
Any help would be appreciated, thanks, best regards,
Tom
I read that is a "Lamp / Inverter" error and am trying to figure out if there is a problem with one of the boards or with the LEDs.
I noticed that there was some light coming from the backlight section for a brief period after plugging the TV in while holding "Input" and "Vol -" at the same time. That only stayed on for a few seconds then shut off. It was enough time to put a meter on the leads from the power board (RUNTKB096WJQZ) L1 pin 1, 3 and 5 tested to chasse ground ~130 VDC. Each LED strip is 30 LEDs long and there are 15 strips on the backlight section.
I saw several videos and blogs where stacking up a bunch of 9V batteries would work to test the LED strips. So I separated the backlight section from the LCD panel to test the LED backlights. I tried 10 batteries = 90 VDC first but got nothing, then bumped up to 12 batteries 108 VDC (the batteries are brand new so it tests with a meter at 132 VDC).
Anyway, according to what I've seen and read, this should be enough voltage to power one complete LED strip, but am getting nothing, no light at all.
I am sure that the voltage is actually making it onto the strip because I tied the battery stack leads to the connector pins and tested across the little copper tabs on the strip.
Before jumping to the conclusion that strip is bad, I tried another strip, same result, nada. So I am guessing that I'm doing something wrong.
Any help would be appreciated, thanks, best regards,
Tom
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