said by esn :
I tried those, but not sure if I'm doing it right. I pressed cable once, then held down setup until cable blinked twice. Then pressed the code. From the instructions, it sounds like cable should blink again twice, but it doesn't.
If your Comcast remote is of recent vintage, it is probably looking for a five-digit code, and not a four-digit one.
You're not pressing the fifth digit.
Try the values suggested above by the poster, but with a 0 in front.
Use, e.g., 00476 instead of 0476.