Avin Avant3 DSP stops after a few minutes

[e39s62m]

Ok, just want to be sure that the app works fine. 

Well, we would check this via multimeter. 
Another option: read out the dsp via I**A, look at status if a source is set (Tuner) or will be set it you tap on "Tuner" in DSP-Mode of the app.
Also you see there, if it's on or not, etc.

And you may check there, if the DSP act like you change values in the app.

When I tap the "DSP" button on the I-Bus app it say something like "source set to Tuner." I can't read the DSP with IPNA or any other tool while the Avin unit is hooked up.

I have the older style 17 pin connector and I understand that pin 16 "ANT out" should be carrying 12V. I'll try to see if I can confirm that with a multimeter.