By default the comcast remote channel buttons control the cable box tuner as expected. I know there is a procedure to get the remote to control the television tuner instead. anyone know how?
Specifically look into the Harmony 520 or 550
1. On the remote control' Press CABLE once. Then press and hold SETUP until the CABLE key blinks twice, then release Setup. 2. Enter 9 7 3 . Press CH- once. The CABLE key will blink four times. 3. Now, the remote control will provide TV or cable channel control capabilities while in the TV or CABLE mode.