Brand: KENWOOD
Category: Other
Document Type: Manual
Language: EN
Available Languages: EN , ES
Manual for PS-40
Uploaded: Nov. 21, 2025, 7:19 p.m.
Warranty Information
Retain bill of sale as proof of purchase for service.
- Before Operation: Read the manual, ensure the PS-40 and transceiver are OFF. Set the Input Voltage Selector Switch to the correct local voltage (115V or 230V) using the rear panel switch; no fuse change is needed. Double-check DC connections and polarity before connecting the AC line cord and powering ON. Remove all packing material. Allow 15 cm (6 inches) of space around the unit and do not expose to direct sunlight or heat.
- Connection: Observe polarity for DC output leads (RED to positive, BLACK to negative). Connect a ground lead between the PS-40 chassis and transceiver. Ensure the AC selector switch is set correctly. Connect the AC plug only after steps 1-3 are completed. The PS-40 will not operate if DC output terminals are shorted or may protect if powered ON with the transceiver in transmit mode.
- Operation: Position the radio and antenna to minimize noise. With the transceiver OFF, turn the PS-40 power switch ON (red LED will illuminate). Turn the transceiver ON.
- Shutdown: Turn OFF the transceiver first, then the PS-40.
Troubleshooting and error codes
| Problem | Possible Cause | Solution |
|---|---|---|
| Supply fails to turn ON | Associated transceiver is ON. | Turn the associated transceiver OFF. The supply may turn on with a moderate load but not with the transceiver in transmit mode. |
| Supply protects (shuts off) | Excessive load or short circuit. | Turn the PS-40 Power Switch OFF, disconnect DC leads, wait one minute, and turn back ON. Correct the cause of protection. |
| Supply turns off due to heat | Vents or fan exhaust blocked. | Turn OFF the PS-40, provide better spacing. After cooling, power up again. Cycle the power switch to unlatch thermal protection. |
| Supply shuts off due to excess transmitter energy | Antenna too close or antenna/feed system not radiating properly. | Check antenna system SWR. Relocate antenna or equipment farther apart. |
| Receiver "hears" the supply (buzzing carrier) | Antenna too close to equipment; loose coaxial connector, broken/missing ground, or no ground between supply and transceiver ground studs. | Position antenna at least 35 feet away. Ensure proper grounding. |