Another strange MMM observation in behaviour

[Texas-Pete]

I would recommend to:

1. Re-sync your Rx to your Tx

2. Re-sync your tx/rx to your MMM

3. Reset all the MMM settings

4. Change the batts all over/ recharge them all

5. Check all your connections, and double check.

I just had my MMM give the same symptoms, and the culprit was a crossed wire inside one the board.