TCL Roku 65" Black screen, no back light, audio and picture ok.
I have a TCL Roku TV that has a black screen. The back light will sometimes flicker and show the screen but there is no back light. Since all the LEDs light up whey it does flicker, i decided to throw a new LED driver in thinking that may be the problem.
The LED driver did not fix the problem. The only other board i can find even attached to the LED driver is the power supply board. I'm reluctant to buy one however because the power supply seems to be functioning perfectly despite the LED driver now illuminating the picture. Could the main board be bad? Finding a schematic online is next to impossible, has anyone else had this issue?
crwdns2934109:0crwdne2934109:0
crwdns2942205:01crwdne2942205:0
@oldturkey03 I replaced the LED driver board. The way it looks like it is wired, has two ribbon cables coming off the Power Supply board. One goes to the main board, the other to the LED driver board. I can't tell how the Main Board talks to the LED driver board since the main board does not appear to be directly connected. I'm just not sure how to proceed here without a schematic diagram or principles of operation how everything is supposed to work. [image|2446631]
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crwdns2934271:0crwdnd2934271:0 Dan Foster crwdne2934271:0