( The display is still tuning OK though. )
1: Check RL1 on the filter board. Watch RL1 as you power on/off. The relay has a clear case.
This is a Tx / Rx relay for switching the antenna from the RX input to the PA output.
If Q1 driver transistor is short, the relay is held ON, so the receiver is almost stone-deaf.
The antenna is connected to the PA all the time.