crwdns2893792:0crwdne2893792:0 Kris Op de Beeck ,
thanks for the info. I’ve also used the M.NT68676.2 LCD driver board with the original power supply of the imac. Initially I had also the BL_ON and P_DIM connected wrongly. Switching both of them fixed the issue. I’ve re-used the cable that was going to the motherboard. For the moment just plugged in the cables in the connector and fixated using tape. Still need to find a clean solution for attaching the control buttons of the driver board.