Telefunken tv repair

[kosi636]

Hi,
I have a problem with my Telefunken television.
If I connect to power turning on and only changing colors.
Tv modell: Telefunken d48f282n4cw
Source of the problem probably the current fluctuation.
Can you help me how can I resolve this problem?

I have bought a main board and it does same thing.
Is it firmware related?

Thank you