Advertisements Mediacom in Columbus, GA just switched from Motorola HD cable boxes to Pace TDC 779X HD cable boxes. I have series 2 Tivo connected and all is well except the Tivo cannot change the channel on the Pace box using the IR blaster. I have been through every code on the advanced setup for channel changing without success. The cable box does not have a serial port but does have a IR in 3.5 mm connection. Connecting the IR out from Tivo to IR in on the Pace box will not work I am told through other posts and may damage the IR out on the Tivo. Any help would be appreciated.