Persistent Backlight Problem with Philips 65PUS6554 12 TV
model : Philips 65PUS6554 / 12
Hello everyone,
I have a problem with my Philips 65PUS6554 /12 TV.
When the TV starts up, there is a flash and then a black screen. The sound still works.
It seems to be a backlight problem: I ordered an LED tester to check the LEDs, but all the LEDs are working properly.
After reassembling the TV, it worked for half a day before experiencing the same problem.
I first suspected a malfunction on the power supply board, so I ordered a new one. Once again, after replacing it, the TV worked for half a day before becoming faulty again.
I then ordered a new main board and a new T-con board, but once again the TV worked for half a day before becoming faulty again.
I've attached all the photos for reference, as well as a video of the flash phenomenon.
I also have a multimeter at my disposal, in case it can help.
I have to admit that I'm very desperate and don't know what else to do to solve the problem.
Thanks in advance for your help :)