Hi I am having an issue with the LED backlight of this TV. I can see the picture with a flash light, so I determined it was a backlight issue.
Initially, after opening it I found 2 shorted and 1 open LED on 2 strips (total of 4). I removed the LEDs and shorted the pads together to verify if the backlight would work.
Testing it, I found the backlight turned on and I measured 54V when TV was in standby (off), and 100v when TV was turned on. The 4 strips each contain 9 LEDs, so 36 in all minus 3.
Instead of putting it back together I decided to replace the LED strips so I bought 4 replacement strips. I tested them with an LED tester and they tested ok. However, when I installed the strips, 3 LEDs burned when I turned on the TV.
I decided to replace the defective LEDs from my original strips with new LEDs that I purchased. The ones on the strips are 3030 3V 1W, and I purchased 3535 3V 1W. I replaced the 3 defective original LEDs, tested them with the LED tested and multimeter and they tested ok.
I then installed them on the TV, and after turning it on, the LEDs just blinked once. I tested the strips again and found one of the old LEDs had shorted, so I replaced that one. After turning on the TV again, I only get one blink.
Measuring the voltage, on standby its 54v, then jumps to about 90 when I turn it on, and goes back down to 62 V and stays there.
Testing with the LED tester shows no issues, and it shows at 100V
What's going on? The strips with 3 missing LEDs was working fine, but now that I have replaced them it no longer works?
Initially, after opening it I found 2 shorted and 1 open LED on 2 strips (total of 4). I removed the LEDs and shorted the pads together to verify if the backlight would work.
Testing it, I found the backlight turned on and I measured 54V when TV was in standby (off), and 100v when TV was turned on. The 4 strips each contain 9 LEDs, so 36 in all minus 3.
Instead of putting it back together I decided to replace the LED strips so I bought 4 replacement strips. I tested them with an LED tester and they tested ok. However, when I installed the strips, 3 LEDs burned when I turned on the TV.
I decided to replace the defective LEDs from my original strips with new LEDs that I purchased. The ones on the strips are 3030 3V 1W, and I purchased 3535 3V 1W. I replaced the 3 defective original LEDs, tested them with the LED tested and multimeter and they tested ok.
I then installed them on the TV, and after turning it on, the LEDs just blinked once. I tested the strips again and found one of the old LEDs had shorted, so I replaced that one. After turning on the TV again, I only get one blink.
Measuring the voltage, on standby its 54v, then jumps to about 90 when I turn it on, and goes back down to 62 V and stays there.
Testing with the LED tester shows no issues, and it shows at 100V
What's going on? The strips with 3 missing LEDs was working fine, but now that I have replaced them it no longer works?
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