Mode-S Beast:Hardware Failure Diagnosis
Troubleshooting and Failure Diagnosis
With the experience of several devices made by users, this chapter should give a basic error diagnosis.
Enhanced Protection Against Static Electricity from the Antenna
Replace the 4k7 resistor (marked 472) directly at the SMA connector by a small coil, 3 turns on a 2 mm core.
You should check the voltage of around 3.2 V at both points marked here with arrows. At all broken MMICs that I have seeen this was clearly different.