Model: IC-765 Bulletin: B4003 Subject: Prevent Antenna Switch Unit Failure 1. REMOVE TOP COVER 2. LOCATE ANT SW UNIT AT RIGHT REAR OF RADIO (AT ANTENNA JACK). 3. SOLDER A .0047 UF, 500V CERAMIC CAPACITOR TO BACK SIDE OF PC BOARD AS SHOWN. (BOARD REMOVAL IS NOT NECESSARY). 4. REINSTALL TOP COVER AND CHECK FOR PROPER TRANSMITTER OPERATION. THIS MODIFICATION PREVENTS FAILURE OF R1, R2, D1 AND L1. -------------------------------------- TOP EDGE OF BOARD /0\ / \ REAR PANEL OF RADIO----> I----0 / \ __I__ / \ .0047UF /0_______________0\ --I-- 0 /0/ I ________________________ / / I------0________________________0 / / / / /0/ VIEW: BACK ANT SW UNIT PCB. y