Hiesense TV 50k360G Sound and backlight but no picture
I have a tv that suddenly stopped displaying the picture. The backlight lights, but the LCD is not displaying anything.
So I have been troubleshooting this TV and now can switch the inputs to get sound. The backlight lights, but there is no response from the panel. I have ordered and installed a tcon board that came from a 'bad panel' tv on ebay, but it didn't change anything.
I don't understand how to tell if the panel itself is bad or if the tcon boards are both bad (including the one from ebay). The tcon boards both have good fuses, and the processing chip heats up when the TV is on. I have checked the connections from the panel boards (two of them in this case) to the panel itself. And I did not feel that any of the pressure glued ribbons were loose. However, there are a few resistors and such on the panel boards, could these be the problem.
Is there anything else in the panel that would keep it from showing anything at all. I would like to know for sure if I should just give up, or buy another tcon board.
Thanks for the expertise.