CB radio repair

You might have an antenna issue, does it receive okay but transmit doesn't get out? If that's the case, you could have a bad antenna coax, check for continuity on center conductor to antenna, and make sure your coax isn't shorted center pin to ground/shield. (sometimes an antenna itself will show as a short so this can be tricky unless the antenna can unscrew from a mounting base/button). If you could get your radio into a watt meter I would expect to see around 4 watts output. Good luck!