Chosen Solution
Hello everyone. I have an LG oled55b6p-u that a friend was nice enough to donate to me after he started to have issues with it. When plugging it in and turning it on, you get one click and no screen or sound. I plugged in an hdmi device to try my luck and nothing. Tearing into the boards and testing I found that: p202 sends no 24v signal to the tcon board. When checking p201, I have no 3v signal when the TV is on going to the DRV-ON terminal. If I jump the terminal with the TV-ON terminal I get my 24 volts at p202 but still no screen. Any idea what can be wrong guys? Thanks in advance! UPDATE: So looking at things it looks like the main board is the issue. Im not sure what may have failed on it but if anyone has any experience fixing one I would happily take advice on it. Thanks!
Hi @bypass21 If you haven’t already got it, here’s the service manual for the TV that may help. The no video/no audio troubleshooting guide on p.63 (of 95 pdf numbering) doesn’t show much except to check all the voltages on the power board and then replace either the mainboard or the power board depending on results. Go to p.89 (of 95 pdf numbering) to view what voltages are on what connector and what pin
