My MMM died today

[j.f.s]

Originally Posted by Pdelcast

Probably not a FW issue -- how old are the batteries? It sounds to me like the batteries are weak and damaged the input capacitors.

Just a theory...

They have less than 10 cycles on them. Turnigy 3s nano-tech 5000mah 35-70c and Turnigy 2s 5000mah 40c. Balance is within 0.01v according to my iCharger 106B. Haven't checked the IR on them but if it's of any interest I'll hook em up to the charger and give you the numbers.

I just remembered something I forgot to mention in my initial post. I've changed the fan since the original one came apart. Fan was working now but is it possible that I've damaged the ESC with heat prior to changing the fan and this caused the ESC to fail? The fan died last week during a bash session. I check the fan every time I plug in my packs but like I stated it died while running my 6T so I didn't notice until the same day I did the upgrade.

@slimthelineman hehe, yeah I've read numerous posts about batteries and MMM's as well. Not worried about the warranty part, just trying to avoid having a new one die on me.

[Pdelcast]

Originally Posted by j.f.s

They have less than 10 cycles on them.

Probably not a battery issue. Please be aware that the real lifetime of Lipos is about 200-300 cycles ... after that, ESC damage can slowly occur.

Originally Posted by j.f.s

I just remembered something I forgot to mention in my initial post. I've changed the fan since the original one came apart. Fan was working now but is it possible that I've damaged the ESC with heat prior to changing the fan and this caused the ESC to fail?

Probably not -- the MMM has temperature protection, so if it gets too hot it will shut down.

Maybe it just had a weak capacitor, that decided to give it up...

In any case, contact our tech support and I'm sure they will be able to take care of you.

Thank you!

Patrick