1. Try using the Smart Setup feature:
- Make sure that your Comcast cable box and Coby TV are turned on and connected to the same power outlet.
- Press the 'Xfinity' button on your Comcast remote.
- Select 'Settings'.
- Choose 'TV & Display', and then select 'Pair Remote with TV'.
- Follow the on-screen instructions to complete the Smart Setup process.
2. Try entering the code manually:
- Press the 'Xfinity' button on your Comcast remote.
- Press the 'TV' button.
- Press the 'Menu' button.
- Select 'Settings', then 'Remote Setup', and then 'Add a Remote'.
- Use the number keys to enter the three-digit code (9-9-2) for your Coby TV.
- Press 'OK'.
- Press 'Yes' to confirm.
- Point the remote at your Coby TV and press 'Power'.
3. Try using a universal remote code:
- In addition to the specific codes provided by Comcast, you can also try using universal remote codes that are compatible with your Coby TV.
- Check the user manual that came with your Comcast remote or search online for a list of universal remote codes for your specific model.
If none of these methods work, you may need to contact Comcast customer support for further assistance.