• LG OLED65C9MLB TV green stripe and turns off

It is currently 14 December 2024, 06:36

LG OLED65C9MLB TV green stripe and turns off

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#1 LG OLED65C9MLB TV green stripe and turns off

by Zemog • 7 November 2024, 13:59
Hello, I have a LG OLED65C9MLB SmartTV, and when I press the power button, the standby LED starts to flash, then the green stripe appears, and then the standby LED remains fixed, as if it were off for protection. If I press the power button again, the cycle repeats.
In the attached video, the lines or stripe appear from the top of the panel to the bottom.
The screen has not received any impact.

Can someone tell me if it could initially be due to a fault in the panel itself or in the boards (TCON for example).

It is the first time I have an OLED screen and the dimensions of it limit me a lot.
I have tried to disconnect and connect the flexes, but it remains the same, and visually I do not see any damaged components on the boards



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Re: LG OLED65C9MLB TV green stripe and turns off

by Google Adsense [BOT] • 7 November 2024, 13:59

#2 Re: LG OLED65C9MLB TV green stripe and turns off

by Zemog • 23 November 2024, 14:04
After having performed some tests, when I disconnect the connector (marked in red in the photo) that comes from the MAIN, the TV, although it does not send an image logically, maintains the stable voltages and the standby LED starts to blink as if it were performing the function of turning on and remains on.
As soon as the cable is connected, the TV does not turn on and the voltages rise for a second and the standby LED remains fixed at all times.
I have tried to disconnect the flex cables that go to the panel, keeping the 2 connectors that come from the MAIN connected, but the short or the protection remains and the voltage rises for a second. Only the TV maintains the voltages when I disconnect the cable marked in red.
I have looked for the VGH, VGL and AVV points on the T-CON to measure the values, but they are not present.
The fact that when the cable that comes from the MAIN is connected, the equipment enters protection, could it be indicative that the T-COM is defective?

Image

#3 Re: LG OLED65C9MLB TV green stripe and turns off

by Vogelek23 • 23 November 2024, 20:50
Hello. Please check the connector (at T-CON) and its flex plug first, whether there are any signs of overload or surge, discolouration, bent or broken tips etc. If both the connector and plug are fine, the T-CON board is most likely faulty - disconnect all cables, remove the black heatsink and post the clear photos of both side of T-CON board.

Re: LG OLED65C9MLB TV green stripe and turns off

by Google Adsense [BOT] • 23 November 2024, 20:50
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