"Messing up" a setting/tuning?
Solution 1:
Since you tune into a station, how about detune? So you could say someone fiddled with the dial, detuning the radio and causing loss of reception.
definition of tune in: https://dictionary.cambridge.org/dictionary/english/tune-in -
to watch or listen to a particular television or radio programme or station
definition of detune: https://www.merriam-webster.com/dictionary/detune - to put (a radio receiver) out of tune or resonance (as by varying capacity or inductance)