Not to revive a dead topic, but if you still have that digitizer board I just did a bunch of work on DTK Digitizers and could help diagnose the issue, or I'd be happy to buy the spare board as a back up part. I do a lot of cintiq repair.
Hi,
I finally obtained the internals of another Cintiq so I removed the not working screen and replaced it with the working one keeping the case and the manual controls boards (power button, expresskeys and image control). The new screen came with the three back boards included so I have them for spares now.
The old screen had four or five stress marks in the LCD after the accident that appeared as faint dark spots of the size of a fingerprint so I guess it is of no use for you. Also, it is heavy and would risen postage costs a lot. So I could send you the working CCFL Driver board, the working Display Controller Board and the defective Cintiq mainboard.
Apart from that it is all screws, white plastic covers of the boards, cables connecting the boards, the metal frame shielding the LCD, the digitizer sheet behind the LCD, the CCFL tubes and all the light diffusion layers between the LCD and the digitizer sheet. Oh, and also the LCD motherboard that is composed of two pieces but I can't remember now if it is soldered to the LCD flat ribbon cables or uses connectors.
If you want anything of this, please send me a message. I live in Canary Islands, Spain, so I have to post from here.