Chosen Solution
I have a Samsung S27D390H - a 14VDC LED backlit display. They’re similar enough that I think asking here is appropriate. I haven’t done a backlight diagnosis since I haven’t needed to before, so I’d like someone who has more experience narrow it down since they’d likely know right away, as I have very specific symptoms. Power always remains on, LED indicates thisBacklight flicks on for a fraction of a second every few seconds, then turns off, ad infinitumThe HDMI signal I tried from my laptop displays properly in that fraction of a second, and the backlight appears uniformly activated during that fraction of a second, whether on HDMI or VGA. So, signal processing is good, and it doesn’t appear to have actual backlight dead-zones I have a feeling this is a simple single-component failure. Can someone point me to the most likely culprits?
Hi @beefsticks , It maybe quicker to invest in the service manual as they have dis-assembly instructions, schematics and parts lists which make it easier to find out what’s wrong and fix it when you do. There may be a problem with the backlighting power supply, connections etc or it may be on the mainboard turning the backlights on and off for some reason.
