Thank you so much kind Redditors! :) Backlight issues are 99% the backlights themselves, especially if the TV has been running at the maximum backlight level which will burn them out faster. Your model may have 3 strips. 2 angled and the straight one with 12 or 13 LEDs. Not too diificult repair on a 40 in tv though you still have to be careful Five blinks per second. If the blink code on your Samsung TV is the red light blinking for up to five times a second, the suspect is usually issues with the main board or other parts and cables that connect to the main board. Other times, it can result from a faulty backlight, loose connection, or overheating. I have a Samsung TV that had issues with the top half of the image going dim then eventually completely going out, checked the panel, still has an image you just need a torch to see anything. I work with computers and laptops and this usually means the backlight has gone/inverter board has gone. This means there is an issue with the original outlet, or the surge protector if you use one. If the TV still doesn't turn on even though the red standby light is now on, continue troubleshooting in the section for the red standby light is on or if the TV still won't turn on and the red standby light is still blinking , this is a sign that Here’s how: Navigate to the home screen of your Samsung TV. Click “Settings”. (scroll left until you see the gear icon.) To access support, click “Support”. Select the Picture Test under Self Diagnosis. Lastly, Make sure you follow the instructions on screen. That’s it, check if there are white dots on your TV screen. All Samsung led Tvs have an issue with the screen . Either it will have backlight bleed, clouding or black lines vertical or horizontal across the screen. Usually noticed when panning out or on all blue screen . Sky screen for example. I know this for a fact as I bought a Samsung led model ue46es5500 last sep . When I try to turn the power on, the red light will flash once, then stay solid again. The TV will do nothing, I hear no sound like the TV is even trying to power on, nothing. My friend took the TV to a local repair shop, and the guy figures the issue is with the LED strips and quoted a insane price to repair the TV. This TV is just two years old! Screen started going dark on me about a 2-3 weeks ago. Out of Warranty and was Quoted $275 to fix it from Samsung. So I did some research. Ordered the Led B No Video : If the problem is No Video but BLU is on and Indication LED is blinking repeatedly and faster than normal booting, replace the T-Con board. “Disconnected the power board from the mainboard, backlight did not come on” sounds like a power board issue. Check pin 14 on CNM803 on the power board and see if you have 5V on that. Backlight issues. When the backlight is broken, it can cause a dark shadow on your TV screen. If this happens, then you need to replace your TV’s backlight bulb. This is one of the many reasons why you can experience this problem. In certain situations. Most modern TVs have up to 50 backlight LEDs and if a few of these are broken, they can Xr1hGY.