IC229H TO ENABLE AIRCRAFT RECEPTION 1. REMOVE TOP AND BOTTOM COVER. 2. REMOVE FOUR SCREWS HOLDING FROUNT PANEL (CAREFULL WITH SMALL WIRES) 3. CUT GLASS DIODE D5 ON THE LOGIC BOARD (BOARD LOCATED BEHIND FROUNT PANEL) 4. D5 IS MIDDLE DIODE. 5. DISPLAY SHOULD SHOW AIR-BAND RECEPTION AFTER PUT BACK TOGETHER AND POWER UP. 6. SOME RIGS HAVE TO HAVE CPU RESET. 7. TO RESET CPU HOLD SET AND MW KEY AND TURN ON.