Originally Posted by siberx
Now, closer examination of the boards reveals that in the 2C they're only using half of the output LVDS lanes (running in 2-channel mode) provided by the EP269 compared to the 4-channel mode on the 2B (indicated by the larger number of resistor packs marked 750 on that board).
If that's the case, then maybe the DVI board is the limit and not the t-con board. The 2B t-con board seems to be the hardest to source since it's provided with the panel module, so if we can avoid having to replace the 2C t-con board, that would make things easier. We need someone to directly drive the 2C t-con board with DisplayPort to see what it can do.
I'm not sure reverse engineering the 2B boards will get us anywhere. Even if they are successfully reverse engineered (which requires destroying the original boards), where are we going to get all the parts, especially the LG-branded chip on the 2B t-con board? If a microcontroller is involved, where are we going to get the firmware?
I think we'd be better off getting our own boards made or finding existing boards that can do what we want. If the 2C t-con board can do higher refresh rates, then we only need a DVI board, or maybe just a pass through DisplayPort board with HDCP support.