Bonanza BENDIX RADAR WEATHER does not work

[Lathonite]

I just bought the Steam Gauge Overhaul - Analog Bonanza.
the bendix RDR 1150 XL color Weather radar does not work.
i have no weather radar image and especially i do not have access to the Systems Screen.
The BENDIX screen indicates:

WARNING NO RADAR TRANSMITTER
RECEIVER DETECTED
SELF TEST IN PROGRESS

i rotate the mode knob on the weather radar, but for each position, i always have the same screen: WARNING....

What is the cause of this problem?

MSFS is up to date

thanks for helping me
Thks

[Black Square]

This is indicative of some other piece of avionics on your system interfering with the others. We commonly see this issue with out-of-date or no longer required GPS packages in the community folder. Start by emptying your community folder of everything except the Bonanza, and see if it works as expected. The Just Flight support team has gotten exceptionally good at finding these interfering packages, so please send them a message for expert help. Otherwise, I am always here to help you troubleshoot more, if you would prefer that too.