Depending on the extent of the damage repair costs can vary widely. In most cases it is worth getting your Vizio TV backlight repaired. Backlight problems are often relatively easy and inexpensive to fix and they can have a major impact on the quality of your TV’s picture. If you are experiencing backlight issues contact a qualified TV repair Options. 28-06-2020 07:00 PM in. I got a trouble with my Samsung UE55KU6450 Smart TV (4 years old): When I turn on TV, screen works fine in the begining, but vertical shadow stripe appears a few later. I note the same area at the rear of the TV is a little hot, as the bottom front. I've tried auto image testing and trouble remains in all tests. @sigurdur The led strips caused the problem. At the end the tv was fixed by a professional workshop because after I replaced the power supply, T-CON board, checked all the wires and solder joints, it still didn't work. It makes sense since every function worked properly, only stips could have caused it. Just got the TV yesterday and the backlight bleeding is horrendous. It’s pretty much unwatchable. We live in Thailand and the seller has thus far not been helpful. In the US, this would be a no-brainer return, but in Thailand it does not seem to work like that. these photos are with brightness turn Ok, so I plugged in and turned on the TV, put the multi-meter to each pin (they’re not labeled), and got 0.0 volts for each one. Turned the TV off and unplugged it, unplugged the LED output connector, turned the plugged the TV back in and turned it on, then again put the multi-meter to each pin…again 0.0. 1: Locate the power output from the LED driver (s). 2: Measure the voltage (and amperage) on startup vs when the TV is on across those lines. 3: If the on startup voltage/amperage is too high, use ohm's law to figure out what size resistor to add to limit current to the LED strips. 4: Replace the burned out strips, put it all back together, and .

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