Having the same problem, although I haven't tried programming this radio with a cable (don't even own one) so the issue can't be related to CHIRP or firmware, best I can tell.
I don't receive a signal on Ham frequencies unless I press MONI or also Menu. Each will give me a few seconds of output, and then go back to not receiving anything.
Interestingly, it receives fine on the AWOS and the FM channels, but not on the local ham stations.
Factory resets, trying the squelch on different settings, turning BEEP on and off, switching FM stations in case it was being confused by interference, nothing seems to work.
Had the radio since February and haven't gotten to use it that much, shame if I had to send it back.
Any thoughts or guidance? Thanks in advance.