Distinguishing between faulty tcon or display? LG OLED65C8

[Sharif]

Model - lg oled65c8pua

 

As the titles suggest, is there a good way to distinguish between them?

So far I tried a replacement PSU and mainboard on this TV to no avail.

 

Symptoms:

• Vertical Green line was a little haze (Photo below) .
• TV stays on for max a minute or doing anything on the TV, relay can be heard opening the circuit.
• Block Image

Image:

Spoiler

 

 

Things done or will do:

• Changing power supply board and mainboard made no difference to symptoms above.
• Reconnected all cables and cleaned all ribbon cables.
• I do have a replacement tcon board in the mail (That was the first part I ordered but I received a broken one, the company I ordered it from finally sent a replacement my way but with slowest shipping possible to an island I am at, so it will be a while to get that).

 

[Sharif]

A little update.

 

That board controlling the display was the issue but unfortunately the display itself was also damaged during the cab ride to my place