75pfl5604/f7 Main board replacement RGB issue

[EazyBone]

Hey y'all, got a 75pfl5604/f7 that was DOA and I diagnosed this to be a main board issue. There was no indicator light, etc etc.

Ordered a new one (maybe used) from torres TV parts and installed it. Now the screen cycles the RGB colors only. Hit power and that's only thing that happens. Which is good/bad because it shows the panel/PSU/tcon are running well lol.

Anyone know what the deal is and how to get it out of this loop??

[Diah]

you may have defect LVDS pin contact.. inspect it under good loop

[EazyBone]

you may have defect LVDS pin contact.. inspect it under good loop

What does under good loop mean. But yes I will check and reseat all ribbons.

[EazyBone]

you may have defect LVDS pin contact.. inspect it under good loop

Interestingly enough this was the solution. For some reason I had to jam the thing in there, I took some needlenose and grabbed the ribbon as tight as I could and use a screwdriver to push in the ribbon and voila it was done.

Also I'm just kidding lol, but it was not seated fully and did require a little maneuvering, thanks again diah

[Diah]

Interestingly enough this was the solution. For some reason I had to jam the thing in there, I took some needlenose and grabbed the ribbon as tight as I could and use a screwdriver to push in the ribbon and voila it was done.

Also I'm just kidding lol, but it was not seated fully and did require a little maneuvering, thanks again diah

well let explain this issue to whom read this threat,,
in General the Issue of only RGB Pattern displaying on the screen... are 99% the LVDS between MB & T-CON or LVDS between MB & Panel in case tV had no external T-CON... the reason one or more of the Silver contact pins during Sitting get cut or lost connection... those PINs are for V, Signals P+ P- could be... so in this case the T-CON or Panel ( no t-con set ) will have only 12V .. so it will run in test of T-CON / Panel stand alone mode.
second reason 1% and this less ,issue at the SPI on MB
thanks for following.