Mmm V2 Up In Smoke !!!

Got my MMM last week. Installed it and race this last weekend with everything running great. Convienced the MMM is a keeper I decided to pop the lid and make some of the mods mentioned in these forums. I unplugged the fan and ran the wiring directly to my receiver's ch3. I made the lid's opening a little bigger for the wires and that's about it. I plugged everything in and I get nothing from the MMM;ie no arming. I raced it last weekend and it did fine. I switched out receivers and do difference. Thinking maybe the switch went bad, I cut it off and soldered the two wires together and still nothing. I checked the batteries (the RX and the main) both are charged. Steering servo and fan works fine just no arming of the MMM. I've disabled the BEC and using power from 2S RX lipo (was doing that before with the MMM and it ran fine). When connected to Castle Link, the software still sees the MMM and can write to it. Any ideas?
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Jammin X1CR, Neu 1512/1.5D, MMM/MM, NO BEC
XTM/XT2, Nemesis XL, Hydra120, NO BEC
2 FireFox 4s 3700, 2 Neu 4s 5000