KD-55XE9005 4 red light and TV restarts after some time.

Hello everyone,

I have a similar and yet a bit different issue with 4 blinking red lights.

We were out of home for a few days and after we came back and switched on our TV, it went out with 4 red lights blinking on it. The weird part is we can still switch it on and it even worked for 40 minutes after I did a hard reset.

I've tried a hard reset 5 more times but the issue is still there. It doesn't switch off right away but rather after 10 or 20 minutes and those 4 blinking red lights are coming back.

I even managed to update it to the latest software from the menu so the TV is working, but something is triggering that internal error.

I've noticed that once just before it went off, the backlight was briefly blinking in the upper right corner of the screen.

I came across a suggestion that I should try to run it with the backlight switched to the minimum and see how it goes. So far, after almost one hour of testing, the TV works just fine.

So I'm assuming that the issue could be related to LED backlight strips or something that's delivering power to them?

Is there something else I could test or which parts I should replace?

What makes it even more bitter is that my mother recently bought a brand new SONY OLED TV with a 55-inch screen for 2.5k euro and apart from deeper blacks and better colors, you'll be hard-pressed to find much difference in image quality.

So I really don't want to invest in a new TV just for deeper blacks and brighter reds sort of speaking...