good day people, I have in LG 60 ", does not turn on the screen, the front power LED flashes 3 times and is OFF, and after a few seconds the LED on the source board (LD701) flashes 5 times every given period of time, I have the main board voltages when I turn on 24Vdc (I measure 25.1), 12Vdc, 3.5Vdc, the POWER-ON goes from 0v to 3.5Vdc with the ignition, the only one that does not correspond to what the plate is the one that I measure in the LEDs of about 62Vdc when on the board it says that it would have to be 83Vdc. there are some test points that with digital tester gives around 0Vdc (I do not now have an oscilloscope if it is necessary to measure signal there ) I reviewed how much welding I saw that it could influence the source plates and the main and next step would be to change the capacitors and check LED display strips. a detail of chance or causality, this fault appeared after a day with strong thunderstorms and power outage due to lightning, but it would be the only artifact of the several that have failed because of this. Any extra ideas? Note1: on source board from J23 = 3.5V with R10K to pin connector (which joins the MAIN) P201 PWR_ON and another R10K to DVR_ON and the LEDs turned on and the LED voltage rose from 62VC to almost 82Vdc. The next thing I did was to isolate the DVR_ON pin from the connector by unmolding it, I left it forced with the R10K pull up and connected to the cable from the MAIN: there the disappointment: I have video, half of the right screen with very thin green green and red yellow stripes and the other half left similar but that changes intensity until it becomes almost white complete. note2: the IC of the T-CON is quite hot and seeing the fault could be? ... anyone knows how to test it

Good afternoon. Here the service manual: https://www.electronica-pt.com/esquema/tv/lg-esquemas-tv/lg-60uf8500-chassis-la53h-33051/ Disconnect the source from the mainboard, try to turn on the source by putting the 3.5V standby on the power-on pin and the same on the power pin on the backlight. If they turn on, it may be the main problem. Greetings and comments.