MMM Mods

[Sneaky Pete]

Originally Posted by RBMike

The MMM(v2) that I have with the most hours on it now (of all MMM's I've had) is the one that the fan connector broke off of on the first day I ran it. I took this one home after it broke, removed the fan & broken off connector and replaced the fan with one that plugs into the RX. This one is holding up great. I'm starting to think the the fan connector getting banged on the case & into the brain board may be what is causing the BEC to fail.

Hey Mike, we were discussing this on Sunday at Bayside, but later last night I was thinking about this...allegedly, there are alot of burnt V2's from right when guys are calibrating or RIGHT when they start running them (slow). That is, they wouldn't have caused any jarring to make the PCB flex causing a broken solder. So, while I do think the plug is a problem, and has perhaps caused problems, there must be another possible cause in addition.

Originally Posted by Sneaky Pete

Hey Mike, we were discussing this on Sunday at Bayside, but later last night I was thinking about this...allegedly, there are alot of burnt V2's from right when guys are calibrating or RIGHT when they start running them (slow). That is, they wouldn't have caused any jarring to make the PCB flex causing a broken solder. So, while I do think the plug is a problem, and has perhaps caused problems, there must be another possible cause in addition.

I modded my case before I powered up my V2, I removed some material from the bottom of the case to make room for the fan connector and I also did a small amount of relief work for the induction coil. Regardless the BEC failed just after calibration with my radio. I beleive the case is a problem and is possibly causing a few malfunctions but believe a more likely explanation would be

A: Faulty parts
B: Assembly fault (my money is on this)

I would think that after all the V1 failures that the CC techs would of gone over the design of the BEC with a fine toothed comb. This leads me to believe that the same problem from the V1's is also effecting the V2's. Is it possible an assembly technique is to blame here?

Has anyone noticed how close the control board is to the back of the FET board? I wonder if when they solder these boards together there is some sort of issue???

Just some observations... I love CC regardless

What are everyone else's theories????

[jayjay283]

Originally Posted by Countryhick

:yes

I would think that after all the V1 failures that the CC techs would of gone over the design of the BEC with a fine toothed comb. This leads me to believe that the same problem from the V1's is also effecting the V2's. Is it possible an assembly technique is to blame here?

Has anyone noticed how close the control board is to the back of the FET board? I wonder if when they solder these boards together there is some sort of issue???

Just some observations... I love CC regardless

What are everyone else's theories????

I received mine (v2) as maybe the 1st or 2nd sent to us customers (not including beta testers) it was sent back with my original connectors from 2.5 months earlier, all nice in small (dime bags) lol. This thing has been flawless. Its soldered very nicely, who ever delt with my particular case spent a fair amount of time making everything right. I said in another thread my theory is sabotage. Some loser soldering joints together too close works too

[RBMike]

Originally Posted by Sneaky Pete

Hey Mike, we were discussing this on Sunday at Bayside, but later last night I was thinking about this...allegedly, there are alot of burnt V2's from right when guys are calibrating or RIGHT when they start running them (slow). That is, they wouldn't have caused any jarring to make the PCB flex causing a broken solder. So, while I do think the plug is a problem, and has perhaps caused problems, there must be another possible cause in addition.

Ya Pete, I agree. There is at least 1 more problem that is NOT related to the fan clearance/fan wires/fan connector mechanical problem. Another issue I could see causing problems is the heat sink being to close to the 6.5mm sockets. On one of the Monsters I have the heat sink is so close to the battery sockets that I could barely get a peice of electrical tape between them.