Comcast remote codes for Sharp TV

The Comcast website has manuals for their remotes buried in their support section... I've always used 10093 (previously 0093) for Sharp TVs for several years now.

Despite the title of your post, you're not asking for a sharp code, right? You just want to get A/B/C back. As you've guessed, the reset may have wiped out the comcast upgrade. So you have a few options: exchange your remote for another one, post the model of your cable box and someone may be able to give you the codes for just the missing buttons, or buy/build a JP1 cable and load the upgrade back in yourself. Option one is free. Option three will cost $15-$30 and a few hours figuring out what to do and installing some software. Post over at the hifi-remote.com forums to find the cable and file you need, if you go with the third option. The benefit of the third option is that, once you have a cable and understand the software, you can make that remote do just about anything. I'm also assuming your remote has a 6-pin connector in the battery bay. If it doesn't, then option three and probably option two are off the table.