Chosen Solution
My LG 32LB530 has audio but black screen
Hi @emma93, With the TV turned on and audio heard, try shining a torch at an angle close to the screen to check if you can see any images at all. They will be very faint if they are there so trying this in a darkened room may help to see them if they are there. If there are images then there is a backlight problem, either with the backlight power supply or the backlights themselves. Here’s an image of the no video/normal audio troubleshooting flowchart, taken from the service manual that shows how to check whether the backlight power is OK or not. If the backlights are faulty there are videos online that show how to replace the backlights in a LG 32 series TV.
(click on image to enlarge)