Can not turn on samsung ua-46f5000

I will try a new main board first. The EEP ROM is damaged, the TV could not fully boot.

https://www.lg.com/us/support-product/lg-50PS80-UA

The led driver AND the T-con board are bad. If you could see a picture with the flashlight then the T-con board would be good. It is not. The led driver can be on the main board or the power supply board. You can get these parts from here: TV Parts Universal TV Stands DLP Chips ShopJimmy

There is explained fix

https://youtu.be/wEWzYLaKdgU
https://youtu.be/02Re-UmG9Gc

Suspect power supply board.
Look for some poped capacitors or other components like fuse/power transistors

Repair No Power Power Supply Common Symptoms Solutions How to...

and

Fixing the Blown Capacitor in Samsung TV Yourself LCD TV

Tcon board of the TV is faulty .
If you wish to get some details; check the site linked here. Pull up older posts.
http://electro-medical.blogspot.com/

Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electro-medical.blogspot.com/
http://electronicshelponline.blogspot.com/
In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/

Hi, It also could be the inverter board(s) that have gone bad. Check them out. If the inverter board goes it will also turn the TV off.
These boards are on the left and right sides of the TV pannel.
Good Luck with your repairs.

I have a UA40EH5000M samsung led tv. Suddenly the screen went blank. only sound is there, no display. Which part may have the problem..please suggest..