Why is my TV not displaying? Three LED blinks.
Hello Community,
I have an LG from a year ago and today, it randomly turned off and the screened stayed black with the back-lights on. After diagnosing and researching online, it was either a bad inverter or capacitor, which are both located in the power supply board so I just decided to replace the t-con board, the main board, and the power supply board to be safe. It doesn’t cost as much as a whole new tv. They were purchased off tvpartstoday and the condition was new. After installing all three brand new boards, the LED still blinked three times and the screen was not displaying the LG logo.
TV with new boards displays:
standby: 1.9V
Operating voltage: 13.1V
When I unplug the back-lights the voltage measurements do not change.
When measuring the 4 pins on the LED pins I get:
LED2 - : 3.6
LED2 +: 132V
LED1-: 5V
LED1 +: 198V
The TV’s back-light are mainly shinning on the left and right side of the tv, the middle is pretty much dark. I’m not sure if that can help solve the issue, could it be s trip is bad?
Cette question est-elle utile ?