If CH is not working, ask:
How do you change channels, with the TV branded remote, or with the cable / STB branded remote?
Steps to resolve:
(1) Reset: press and hold ADD till solid, then 954, light blinks out.
(2) Set TV: press VOL. If working, go to STB. If not, then: press and hold TV til the light turns solid, then enter the 4 digit code (test on/off and VOL)
(3) Set STB* (STB=cable / satellite box): press CH. If working, you are done. If not, then: press and hold STB til the light turns solid, then enter the 4 digit code (test on/off and CH);
* If you do not have a STB / Cable box, then: press and hold TV till solid, enter 970.
Troubleshooting:
If the red light does not work as expected, then reset as follows:
(1) Press and hold ADD till solid, then enter 956, light blinks out; Repeat with STB and TV buttons;
(2) Reset: press and hold ADD till solid, then enter 954, light blinks out. The sync, above.