- If you have backlight but no picture then you need to replace the main board on Samsung smart tv.
Sometimes on your samsung smart tv you may be having a good backlight picture setting but no picture will be displayed on your screen or screen goes blank or black on Samsung tv. In this article we will go over some basic troubleshooting steps for Samsung LED TV that has a blank screen but does have backlights in Samsung LED TV.
There are different boards like t con board, power supply board, LED driver board on samsung smart tv. However this Samsung LED TV has a power supply and main board. LED drivers can sometimes be built onto the power supply board. On this TV the t-con board can also sometimes be built on to the main board or into the TV panel, this TV has the t-con board connection here and then it runs into the panel. If you have a blank screen on your Samsung LED TV then do the below checks.
How to fix Backlight but no picture on Samsung smart tv
Check the t-con Board
First check that you need to perform is verify whether your t con board is working well and and in good condition, check all the components carefully. If the components are damaged then you should replace the board. If there’s no replacement board available you can also try replacing the individual components or purchasing a repair kit.
When looking for damaged components or burn marks you can also look at the bottom side of the board. You would simply just need to disconnect all the cables and then remove the screws that hold the board to the panel. Be sure when disconnecting cables and removing screws that you take a picture of what the board looks like in the original state with all the cables connected and then you’ll have a reference for when you reconnect all the cables if you see any burnt or damaged components it is recommended to replace that board if you do not find any damaged or burnt components then go to second check.
Also Read: 1) How to Turn on a Samsung Smart tv Without Remote
2) Samsung Smart TV Black Screen with Sound
3) Fix Samsung tv Screen Dark on one Side
4) How to Fix Lines on samsung TV Screen
5) How to Fix Samsung Smart TV Black Screen
Check the LVDS Cable
The second thing to do is check the LVDS cable to be sure that it is seated properly and that there is no damage visible on it. If you do see visible damage to the LVDS cable you can search your TV model number on our website to try and find a replacement if the LVDS cable and the other components are working good then the next check to perform is voltage checkup. If you cannot see any defect in voltages then problem might be with the t con board, TV panel or main board. Try finding the problem is to replace the main board and the t-con board individually to see if one of these boards fixes the problem this will require you to purchase both boards and then see which one fixes the problem or purchase them individually and see which one fixes the problem.