Hermes-Lite 2 IO Board RX Antenna Switching Issue

[سعد saad الفندي alfandi‎]

Hermes-Lite 2 IO Board RX Antenna Switching Issue

Previously, everything worked normally. Now, when I switch to the RX antenna, I can clearly hear the relay clicking, but no signal appears on the spectrum (it goes completely deaf). When I switch back to the main TX/RX antenna, everything works perfectly fine.

I have already verified that the external antenna and all coaxial cables/connections are good, which isolates the issue to the IO board itself—the RX antenna signal simply isn't passing through.

Has anyone encountered this before? Could it be a faulty relay contact despite the clicking sound, or perhaps a blown protection diode/component on the RX path?

Any troubleshooting tips would be greatly appreciated!

Saad 7Z1DV