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The Sony KDL-50W800C TV is a model with a screen diagonal of 127 cm, a screen resolution of 1920 x 1080 pixels, an aspect ratio of 16:9, 4 HDMI ports. 2 USB ports to connect an external hard drive. Ethernet port to connect to the internet via cable, internet connection via Wi-Fi, the Android operating system. Release date: 2015-07-02.

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Should I change the TCON board?

Have this issue with my TV where the screen would work for 5-10 seconds when switched on and then goes black. I can still hear sounds and the backlight is working.

I also note that if I leave the TV unplugged for a few hours, then turn it back on. The screen will now work fine for a few minutes before showing double image,l. This is again follow by a black screen after a few minutes.

I have tried unplugging both left and right tapes connected to the TCON board (while the screen is working) and note that half of the screen would flicker briefly before the whole screen goes blank. This happens regardless of the side that is disconnected.

Would replacing the TCON board likely fix the problem? Or could the problem be elsewhere.

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Is there any blinking power LED?

Have you inspected the PSU capacitors?

Usually, if a TCON board is bad, it won't be on for 5-10sec or minutes, but anything is possible.

An IR camera would be useful here as it seems like a heat issue. The bad component or circuit is heating up.

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