Samsung trouble shooting

You have at least one bad LED in the panel and its shutting down the power supply...for future reference a bad Tcon will not cause loss of sound only affects picture

It is a common problem for a Samsung LED TV, the problem is defective LED back lights strips.

If you wish to get some details; visit the site linked here. Pull up older posts. http://electro-medical.blogspot.com/

Hi!

Check the backlight circuit, but first, check the power supply of the blacklight circuit, does it feed the backlight circuit or not. If not, it's the power supply circuit, if yes, check the backlight circuit itself, and if it works, check the backlight themselves, the led. Good luck,


Serge.

Here is what to check when your TV is turned on, power light is ON, but no picture is seen or sound is heard:

1 - Be sure the component you are using (Xbox, Cable, SAT, ROKU) is turned ON.
2 - Check to be sure all cable and cords are securely connected to the TV inputs and component outputs.
3 - Make sure you are on the correct input as some TV's will show a black screen if there is nothing connected to that input.
4 - Unplug the input you are trying to use from the TV (such as an HDMI Cable) and plug it back in.
5 - Check for signs of damage on all cords and cables from the TV to all components.
6 - Make sure the TV is not in ENERGY SAVE MODE, press the button on the remote control to go back to normal mode.
7 - Unplug the TV for 10 minutes to see if there was a temporary one time issue with the TV.
8 - Disconnect the TV from power for 2 minutes, then when plugging it back in PRESS AND HOLD THE POWER BUTTON ON THE TV FOR 10 to 20 SECONDS to try and force the TV to reset.
9 - If after checking all these different issues, you may have a Faulty Power Supply Board, A Bad Capacitor on the Power Supply Board, Loose Wire Harness, or Loose Ribbon Connector in the TV itself.
10 - Most likely when a TV has the power light ON but NO PICTURE and NO SOUND, it is the Power Supply Board that has failed.

BTW, here are solutions for you to play iTunes movies on Samsung smart TV

Hello. Repairing your own TV isn't something I recommend. You risk injury, and could cause more damage. If you still want to proceed, remove the back of the TV. Unplug the cable between the Main board (the one the inputs connect to) and the Power board (the one the AC cord plugs into). Then plug in the AC cord. If the backlights come on, you probably have a bad Main. If they don't, it's likely the panel, which is expensive.

Start here:
http://www.manualslib.com/manual/267856/Samsung-Un40eh6000f.html?page=13

Then try here:

http://www.badcaps.net/forum/showthread.php?t=38349

it's the inverter. you can get one here. tvtechparts com