SAMSUNG UN60JU7100 - Order of LED light diffuser sheets when re-assembling TV


I recently replaced an LED strip in my SAMSUNG UN60JU7100 TV. I managed to do that with little difficulty.

My problem is that I did not mark the order of the 3 diffuser sheets that go between the LED lights and the screen.

There a 3 sheets

1 thick white opaque plastic (about 1mm) with a smooth side and a rough side

2 silvery translucent ones about the thickness of card stock
A. One that is the same on both sides
B....

My Samsung LNT4671FX/XXA TV goes to a white screen after a while, comes back to picture, then white screen. It almost seems like the pixels all turn off and I see the backlighting. Sound still works. I am trying to decide whether it is the T-con board, FRC, or the main board. I have heard that this is a common issue with this model. The general consensus is the T-Con board.

Any ideas before I buy the parts? Suggestion on sources for the parts?

If I buy all three, can I return the ones that did not fix the problem or should I try them one at a time?

Re: New Members - please post your introductions here

New here. I am a retired systems engineer trying to learn to repair newer TVs