Radio Inoperative

1. For checking a speaker, use a "C" or "D" cell battery and momentarily connect and disconnect it across the circuits to that speaker while listening for a slight popping sound or watching for the Conn of the speaker to move in and out. If either happens, the speaker and circuitry are usually OK.
2. Check for a short to ground through CKT 1733.
3. Check RDO Fuse. If open, check for a short to ground through CKT 43.
4. Make sure ground G303 is clean and tight.