My port on the board for the LCD temp sensor is broken. Fans are going nuts. The instant I turn on the iMac. Does anyone know how to get around this? HDD fan control doesn't do anything. iStat says Optical 3317 rpm Hard Drive 1116 rpm CPU Fan 4061 rpm Damn. Noisy as hell. The 'port' is broken not the cable so I guess the whole logic board is toast. Any ideas?