Aug 17, 2023, 11:45 PM
Post #1 of 3
I bought a new Sony KD-65A8G OLED in Singapore in 2020, brought it back the the US in 2022. It’s 110-220V rated, so worked fine for a year. Then one day it wouldn’t power on at all, maybe surge damage, it wasn’t using protection.
SONY OLED TV no picture
Sony doesn’t service the Carolinas! Weird, but whatever. Even Geek Squad couldn’t help and there are literally no independent TV repair companies here either (Charlotte, a good sized city).
So now I’m DIY’ing. I replaced the power board, still no power. Then replaced the main board, and now have power and sound (demo mode music), but no picture. I then replaced the T-con board, but still no picture. The panel looks fine, no physical damage.
Here’s the nuance — the KD65-A8G was marketed in Asia/Australia from what I can tell, but is identical to the U.S. model XBR-65A8G, except for the main board. The KD uses Sony main board P/N A-2229-184-A, which I can find nowhere. The XBR uses Sony P/N A-2229-191-A, which are plentiful on eBay, and that’s what I used to replaced my dead main board. They use the same base circuit board (identical model numbers) but populated differently (more I/O’s), however all cable connector pin-outs to the power board and display are identical. The other boards are identical between the KD and XBR.
So, what could be causing the no display problem? Do OLED panels die? Could there be some firmware mismatch between the main board and the display (the T-con boards are identical). Could the power or ribbon cables be damaged?
I hope someone can share some insight because this was a $4,000 TV new and what a waste to have it crap out in just 3 years.