============================================================================== K E N W O O D >>> A M A T E U R R A D I O S E R V I C E B U L L E T I N <<< ============================================================================== Kenwood Service Centers Kenwood Service Corporation Kenwood Service Center, East 2201 East Dominguez Street 829 Lynnhaven Parkway, Suite 130 Long Beach, California 90801 Virginia Beach, Virginia 23452 Telephone 1-310-639-5300 Telephone 1-804-340-1702 ============================================================================== BULLETIN # 1027 MODEL: TM-732A SUBJECT: Protection of Q201 in 430 MHz Unit Symptom: Q201 the first RF Amplifier in the 430 MHz unit fails at random. Corrective Action: Addition of diode D218 in parallel with diode D214 in the RA line provides increased surge protection for Q201. This diode is added on the 430 Mhz TX-RX Unit (X57-4000-11) near Q201. Parts Required: Qty Description Kenwood Part No. 1 Diode HSK277 D218 Caution: This modification requires soldering equipment rated for CMOS type circuits. It also requires familiarity with surface mount soldering techniques. If you do not have the proper equipment or knowledge do not attempt this modification yourself. Seek qualified assistance. Time required for this modification is 30 minutes or less. Service code A:18 B:X57-4000-B4 C:D218 D:91