Hello, again Juan,
I suggest starting with the operations manual available on the QRP-Labs QMX webpage:
You should upgrade the firmware as instructed in the operations manual.? The upgrade process is described on page 56 of the current operating manual.
Verify operation, and if there is an issue, then try a Factory Reset as described in the Operations manual.
Since you purchased a QRP-Labs built QMx, I would contact QRP-Labs support and request information on how to send them the unit to be repaired if the above can not resolve the issue.
73
Evan
AC9TU
