[jhautz]

do you have a volt meter you can check the output voltage of the bec when the MMM is turned on? I sounds ike what happened to mine when it died. Sometimes it woked and sometimes it didnt. When it worked it would work fo a few seconds and shut down again. The voltage on the internal BEC output was varying from 2v to 6v depending what it felt like doing at that moment.

If you can check the BEC output voltage, but thats what it sounds like to me.