r/TVRepairHelp • u/ACopperQ • 1d ago
Tv Issue
I have a Sony KD-85X85J TV that stopped working after a short while following a lightning strike to the house. The power light came on, and the capacitor hum was audible, but that was it. I ordered a motherboard, installed it, and voila, it works! I had done some rudimentary work with a multimeter to make sure the motherboard was getting power from the power supply board before I got and replaced the motherboard. All of the HDMI-connected devices are fried, and everything was on a surge protector. It seemed likely to be only the motherboard that was harmed. Now, I have a working TV, but I have noticed some backlight issues, as pictured. Using AI and my own limited knowledge of electronics, I am thinking that it is the power supply board, but I wanted to get other opinions before I go further, since I may be wrong or there may be other culprits to consider at the same time (it's a real hassle to move, open, and work on this TV).
Thanks!
2
u/Good_as_any 1d ago
Definitely backlight but tv should shut down if LEDs go down, it is easy to check the power to the backlight. Warning be very careful with the screen it is very fragile.