Has sound,no broken or blown compacitors an gray screen.
Having issues with finding out why my picture won't show on my older model lg
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more information about what you have checked etc. would be helpful. LG has issues with bad LED backlight strips. With your TV on and having proper sound from that channel, in a darkened room shine a flashlight at an angle against the screen. If you can make out shapes and silhouettes It is your TV’s backlight that is not working. This could be related to the main board, the power board or the backlight array (most commonly) You will have to remove the back from your TV and post some images of all of your boards with your question. It is good that you do not have any obviously damaged looking components but you will have to do some voltage checks on the board to troubleshoot this further.
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