Hi,
I have a Sharp TV/DVD combo, model no. lc-19dv22u.

I lost the Sharp remote but have a few extra Comcast remotes.

I punched in the Sharp code (0093) after pressing "TV" and then "setup". The code worked. The TV turns on and off with the Comcast remote. The volume also works. However, when I change a channel, the "cable" button at the top of the remote lights up but the TV does not change channels.

What am I doing wrong?

Can anyone offer any help or suggestions?

Thanks!

Your remote is working as it is designed to do: with a set top box, you want the cable channels to change rather than the TV's, even when in TV mode. This feature is called Channel Control Lock, and it can be enabled or disabled, using the following directions copied from the Comcast remote instruction sheet.

De-activating Channel Control lock
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.

Re-activating Channel Control lock
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 twice.
3. Now, regardless if you select the tv or Cable mode, only the channel control capability of your cable box will be accessible.