Unlike the IC-7300, the IC-705’s final amplifier is on the main board. It sits on a separate small PCB (PA-UNIT) attached to the chassis heatsink. The manual lists the RD15HVF1 MOSFET as the final device—good for 5W CW/SSB, 2.5W AM carrier. Common failure : Drain-source shorts due to high SWR (no internal ATU).
Deducting 2 points for the missing mainboard schematics and lack of troubleshooting flowcharts. However, for what it covers (RF board, PLL, filters, PA, power management), it is accurate, thorough, and a model example of a modern SDR-based service manual. If you own an IC-705 and plan to keep it for a decade, —even if you never open the case, it will help you diagnose whether a fault is user-resettable or requires a bench technician. icom ic705 service manual
The storm over the Cascades wasn’t just heavy; it was a wall of static. In his cramped mountain shack, Elias looked down at his . The sleek black transceiver was his only link to the valley, but the screen was dark. A stray surge from a nearby lightning strike had bypassed his arrestor, and now the radio was dead. Unlike the IC-7300, the IC-705’s final amplifier is