Not enough info to say much.

Things to try: Carefully double-check your work.

If you can't see anything wrong, restore to the original configuration. If it doesn't work, then you likely borked something when you powered it up with the connections incorrect.

The crt can be damaged physically. It's highly unlikely to have been damaged by a wiring error. So unless you bumped the neck and cracked it (with an accompanying loud, long hissssss), the crt itself is the last thing to worry about.