Samsung UE40C6510UP left/right screen inconsistency

[k-krzych]

Hello,
This is my first TV repaired, i do normally pc and audio repairs. I need some help please.
Tv had a humidity issue on flat cables that connect T-Con with screen.
Contacts were oxidated on left side of the screen. In consequence left side was black with vertical stripes.
Contacts cleaned, and I had to make the flat cable well attached too its contacts stuffing the space under with tiny plastic sponge. All works.

The problem is that now there is a visible difference between right and left side of the screen
.
How can I fix this, please?

 

[Gaber Mohamed Boraey]

Get the schematic diagram of the t-con board and check the voltages there

Also is the back light normal at right and left?

 

[k-krzych]

Get the schematic diagram of the t-con board and check the voltages there

Also is the back light normal at right and left?

Thank you. Both back light are ok, and voltages from psu also. Yes I had some inconsistencies with low voltages and disturbances (oscilloscope check) on T-con. In first place i ran the T-con with ultrasound cleaner, then made sure that all oxidation from contacts onboard and on the flat cables are gone. Cleaned all IC soldering from mb.

Worked as a charm. Picture is perfect now.
Thank you for placing me on the right track.