The MMMs with melt down is far less common than the ones with BEC problems. Generally, the ones with BEC problems can be fixed with this mod.

Using an external BEC is all fine and good, but if the internal one goes south, the ESC is dead, even if the external BEC is still perfectly fine. Since we don't know exactly what causes the BEC issue, so using an external one (without disabling the internal one) may not help at all.

Ok so to my understanding I can continue to use the external bec until the esc died without smoking, I can then do the bec mod and get it back to live? or is it too late by then?

It should be able to be broght back to life then. However, if the mod doesn't help (or you accidentally messed up something doing the mod), your warranty is void.

Bah, what good is the warranty when some of us have to pay international shipping and wait ages anyway. And just to have it replaced by another potentially faulty unit.
Heck, Traxxas replaced my VXL-3s for free incl postage after I had opened it and sawed the female bullets off among other things.

OK, just wanted to reiterate the disclaimer. Don't need people saying "BrianG said this would work for sure and it doesn't, and now I can't even get it fixed under warranty."

Well, I went to the track to test V2 in X2 today. Inconclusive. The External BEC & mod bits definitely works. However, after a few laps round the track, the truggy stopped. When I went over to check, I noticed that the top cover of the esc had dislocated from the bottom cover. Also noticed that one of the 6.5mm connector on the battery side was very loose. So fixed everything & use some zip ties to tie down the esc. New problem, the truggy was cutting out under throttle like a typical lipo cutoff situation. I check with my multimeter but the battery was fine. I tested the truggy off the ground & it looked ok. I'm kind of puzzled.

Earlier, I had set the lipo cutoff to 15.5V for 5S. I checked just now & it's still there. I changed to auto. Hopefully I can test it again later tonight.

Regards,
Joe Ling

Ok, after some detective work, I am having fixed feelings. I think the esc is fine but the motor is stuffed. I cannot rotate the rotor my hand. This could mean that the magnet is shattered or something. 1515 2200KV Tekno rc Neu motor. First outing for it too. Guess I have to send something far away to USA afterall...

Regards,
Joe Ling

Hi

My Monster died after 10 min with this BEC failure. Did someone tried to bring a Monster with BEC failure back to Life with this mod??

Because if i have to return it to Castle, shipping would be 1/4 of the ESC cost (overseas) + a lot of waiting time.

Greetz
Webwiesel

Yes, BrianG and Joeling both bought their MMMs back to life (well, Joeling did, Brian was pre-empting the possible). If you have the skills, you could attempt the mod, if not, better to get a replacement- though quite what caste is doing with all the dead MMMs I'd like to know; if they are getting chucked in the trash, then wouldnt it be better for them to get the dead esc checked out, then ship it back, along with a replacement. That way people can decide what to do with the dead esc (Castle can mark the dead one so people dont try to re-sell them to other people hoping to get a free esc by sending in the dead one again).

I hate to see stuff go to waste...

agreed, maybee we could salvage the dead ones w/o fear of voiding the warr.? or at least have some spare parts, or just use it for therapy and smash it!

Hi BrianG,

Any response from CC? I also want some if the price is tight...I mean right:lol:.

Regards,
Joe Ling

I spoke to early..now my V2 also died..it started with turning problem...the servo can barely turn the truck then it stopped....switch on off seem to work for a while then dies again...at first i thought it was the cutoff re-flash it and did everything but sadly now it doesnt even turn on....MMM still can connect to catlelink so i guess im off to do BrianG's mod (with the disclaimer in mind:lol: )

Please tell me if the V2 can be mod like the V1 (internal parts to be remove)

Yes, please see my pics in the previous pages

Regards,
Joe Ling

Joe Ling made the first V2 mod and it work for him...Now after doing mine it is ALIVE (with an RX batt, my UBEC hasnt arrive) I cant say how good it is since I cant run further test (raining outside)...

Anyway here is the photo of my mod...
this things are small and since I was hesitant to unsolder the 4 component...i did the barbarian technique...

Used a sword..I mean a utility knife and cut them loose :lol: verified no short...and tested it on my maxx but wheels hanging...

http://img507.imageshack.us/img507/734/dsc4106lj4.jpg

Need to run it more....also need to solder/short the switch...i find no use for it really after running test