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screens goes very dim but can still see

Same problem here unplugged did hard and factory reset.turns on shows time and lg logo front red light goes dark screens goes very dim but can still see and use nav menu and tv plays sound.please help im thinking led strip or power board hope its something easier than these options

Update (10/23/2022)

Sorryy its an LG 55LM5850-UF 3d. Tv. Also with. Cover off ppowerboard blinks 4 yellow/orange over and over. Pictures too come

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picture of my board

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Y so difficult to upload pictures here?

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@petercw it's not really that difficult. Just edit click on Edit for your QUESTION and add the images according to this guide Agregar imágenes a una pregunta existente You can only add images to your QUESTION or to answer

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@petercw we would need to know the exact model of your TV. It is an LG and they do have trouble with the backlight array (subpar quality strips being used). Of course, you do want to check the voltages from your power supply to the backlight LED's. For that you would have to remove the back cover and test the DC voltages. If you take some good pictures of your boards and post those with your question, we could most certainly point you to where to test and what to expect. Agregar imágenes a una pregunta existente

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Please help with. Diagnoses

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@petercw give us a close up of the brown board. that is your power board and one of the larger green board, that is your main board.

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well i found a broken muh460 diode and alot of people haD THE SAME ISSUE so i replaced it and getting propper volts going out but now tv wont power up at all so i now have a different problem.lol checked co

and replaced replaced cord both r fine that i have then check board its getting power then i checked plug and cable to tcom its getting power. any ideas next?

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