My sons Blade MCX is acting up I guessing its the board but I figured I would check to see if anyone new something different.
Connect a good battery and the led comes on in a few seconds like normal. Advance the throttle and it starts to go but is week and the the led kicks out and you have no control and the rotors continue to spin, they spin down slowly to a stop and the led will come back on. It acts a lot like a low battery but they are not and some times it goes full power with no throttle or directional control.

Any Ideas?

try to re bind it.  and un plug everything. maybe its just a glitch<input id="gwProxy" type="hidden"><!Session data></input><input onclick="jsCall();" id="jsProxy" type="hidden"/><div id="refHTML"></div>

Starting with the cheapest to the most expensive:

1. rebind (free)

2. buy new battery ($8-15)

3. Replace board ($65)

have u tried binding it to a different radio?<input id="gwProxy" type="hidden"><!Session data></input><input onclick="jsCall();" id="jsProxy" type="hidden"/><div id="refHTML"></div>

Tried
1 rebind
2 rebind to differedt radio
3 multiple batteries that work fine in an MSR
4 different battery charger

It acts like a really low battery to the point where when a load is put on the battery it disconnects from the RF link and the led goes out then you have no control 5-10 seconds later it will re link when it relinks if the batt is loaded it will do it again.

Try re-centering your trims. Make sure you click throttle trim "all the way down." My blades wouldn't spin up after a crash and it took me a few days to figure it out. My blades wouldn't spin up because some how the throttle trim got pushed up. I'm still trying to figure out what the heck happened. I was thinking maybe some sort of safety cut out on a crash. Good luck.

BTW, this is with the stock TX

Mike.

SOUNDS LIKE A BOARD PROBLEM<input id="gwProxy" type="hidden"><!Session data></input><input onclick="jsCall();" id="jsProxy" type="hidden"/><div id="refHTML"></div>

As usual, None of us will never know the outcome