Need response from a Castle tech for MMM question

[suicideneil]

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...

[slimthelineman]

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!

[TruckBasher]

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 )

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

[joeling]

Yes, please see my pics in the previous pages

Originally Posted by david lamontagn

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

Regards,
Joe Ling

[TruckBasher]

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 verified no short...and tested it on my maxx but wheels hanging...



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

[BrianG]

So, that brings the tally of reanimated MMMs up to three now? Mine, Joeling, and now Truckbasher.

[TruckBasher]

technically its 4 now, Joe ling both modded a V1 and another V2

[TruckBasher]

IF you did the wiring correctly (Brian's wiring diagram), on the MMM no black/brown was cut but this is only true if you directly soldered the black wire from the UBEC input to the MMM and the black wire output of the UBEC to the RX plug. This is a "ground" wire so basically it is the same.

If you are not sure about the wiring you can go over the mod but dont do anything on the wires going to RX. Then connect the UBEC directly on the RX as you would normally do....leave the red and black/brown as this will back feed the MMM Brain

edited:
My response was late

[TruckBasher]

Originally Posted by TruckBasher

If you are not sure about the wiring you can go over the mod but dont do anything on the wires going to RX. Then connect the UBEC directly on the RX as you would normally do....leave the red and black/brown as this will back feed the MMM Brain

Hehe that the same thing I said on page 7..I guess it better come from the expert to be reliable

[joeling]

I see where your confusion is now. The Brian's diagram shows brown wire as the signal wire while in reality, the signal wire on the MMM is orange. The black ground wire in Brian's diagram is actually the brown wire on MMM. Confused now ?

Regards,
Joe Ling

[BrianG]

Originally Posted by joeling

I see where your confusion is now. The Brian's diagram shows brown wire as the signal wire while in reality, the signal wire on the MMM is orange. The black ground wire in Brian's diagram is actually the brown wire on MMM. Confused now ?

Regards,
Joe Ling

The diagram looks OK to me. The orange (signal) wire is on top, the red wire is in the middle, and the ground (brown or black) is on the bottom, but removed. Don't forget, the diagram is flipped around from the actual pics.

[TruckBasher]

IMO the burn MMM are caused by a totally different issue but just my opinion. I did not do any mods on my fan I let the brain power it when needed....it wouldnt hurt to run it via UBEC but it will only add more wiring than needed..you can also do the no fan mod of Brian

Originally Posted by TruckBasher

IMO the burn MMM are caused by a totally different issue but just my opinion. I did not do any mods on my fan I let the brain power it when needed....it wouldnt hurt to run it via UBEC but it will only add more wiring than needed..you can also do the no fan mod of Brian

What is this No fan mod??

[BrianG]

Originally Posted by david lamontagn

Thank you to BrianG, TruckBasher and JoeLing for your PM and your help, so if you have great results with your mod V2, i'll be more confident to run mine .

But i need to know if i'am better to mod it as soon as i'll recieve it or wait until it died. But if i wait, i risk to have a fire on the ESC, so the mod will be impossible.

And after your mod it, should i run a fan on it power by the Rx or you can run it without fan??

Well, it depends. If you're racing and can't afford downtime due to a bad BEC, then mod it right away. If you're just bashing, then you don't lose anything by waiting until if/when it does go bad. You may luck out and never have a problem.

Either way, this mod ONLY addresses the BEC issue. It will NOT affect if the ESC decides to smoke or not - that's usually caused by something else entirely.

Also, be aware that if your external BEC blows for whatever reason, it will affect the ESC too (since the brains run off the BEC). We are assuming that the external BEC will run perfectly, but some do develop problems.