Sanyo 32" LED TV thin horizontal lines

[jorpec]

Hi

I have a SANYO LCE32LM08(those cheap tvs with vestel boards) LED TV that's got thin equidistant horizontal black lines covering the full screen. The picture underneath the lines at some images looks ok but on anothers has some strange colors(looks like the old CRT when they have a weak cathode). I'm thinking faulty T-Con board. Any thoughts ?

I already heated the main board and t-con with an hair-drier but no effect

Here the boards a panel refs:

LCD Panel - LC320EXN
T-CON - 6870C-0370A
MAINBOARD - 17MB65


Thanks in advance