Backlight briefly flickers on - which is the most likely component?
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 this- Backlight flicks on for a fraction of a second every few seconds, then turns off, ad infinitum
- The 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?
crwdns2934109:0crwdne2934109:0
crwdns2889612:0crwdne2889612:0
0
11 
367 
1,4crwdns2936485:0crwdne2936485:0 
crwdns2942205:01crwdne2942205:0
While the backlight is off on the TV and a signal is connected, if you shine a flashlight onto the TV screen, do you see a dim image?
crwdns2934271:0crwdnd2934271:0 Andrew S crwdne2934271:0