I just got my Catleap Q270 last night; SE2C variant, and it won't hit refresh rates above 65Hz or so without wigging out. Otherwise it's a fantastic monitor
Looking closely at the (very nice shots, thank you jbuschdev) pics posted so far of the 2C variant compared to the couple photos ScribbyDaGreat posted of the wiring at the back, it would appear we have a total of 3 components to worry about here.
1. The actual panel itself, including a couple thin PCBs that directly drive the TFT. I suspect this is the same in all cases.
2. A driver board located immediately below the two thin PCBs. This is clearly visible on the 2C shots and not shown on Scribby's 2B shots because he didn't remove the metal shield covering it (although you can see the cables that attach to it). This is connected to the two thin PCBs with a couple flat ribbon cables (at least on the 2C). I suspect this board is connected to the two thin PCBs the same way on all units.
3. A DVI converter board, which takes the incoming power and DVI and feeds the drivers/backlights, etc. This is obviously a different board on both units, as the wiring is different.
My current suspicion is that both the DVI converter board and the driver board are different between the two variants; they have different cabling that runs between them, so this stands to reason. It should be possible to replace both the dvi converter board and driver board from a 2B onto a 2C's panel and get high refresh rate out of it.
ScribbyDaGreat: When you're doing a teardown could you remove the metal shield covering the driver board (the one clearly visible in the 6th shot of jbuschdev's pics) and examine the connection between the driver board and the panel (two flat ribbons in his case)? If your connections there are the same, there's no reason you shouldn't be able to replace the driver board and DVI converter on your 2C monitor with your 2B's hardware and get high refresh rate out of it. This would be extremely invaluable, and would tell us exactly what's the difference between the two units.
EDIT: Just saw your shots Scribby, thank you; is it possible to swap the board attached to the back of the panel marked "LG Display" on the main chip? you should be able to flip the tabs up on the two ribbons and remove it, and put that part (and its associated DVI board) from the 2B into the 2C.Edited by siberx - 3/13/12 at 9:22am