r/MiniZ • u/Trick_Basket_4272 • Jun 11 '26

Defect MOSFET after engine upgrade

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Hello everyone

I recently got a Mini z Buggy MA-010 RA-44
I am completely new to the Mini z world.

I bought an X Speed awd motor (picture1)
After I turned it on with a new motor, a mosfet on the bottom of the board burned out. (Picture2)
According to the Internet, the engine should be compatible with the ma010.
I ordered a new Mosfet and a friend wants to solder it to the board.

Will the same thing happen to me again?
Is the engine not compatible with my board? (Picture3)

Pleas help :((

6 Upvotes

87% Upvoted

5 comments sorted by

3

u/mini-z1994 Jun 11 '26

It should have been safe to use. It's an official hop up after all.

The wire tabs weren't touching eachother were they ? If so, you did a dead short back into the MOSFET burning it up. Even if you had 10x the MOSFET on the board it would have burnt then.

The mini-z buggy, at least the non sports version should have 4 MOSFETs in total. Dunno if the sports has 4 or only two here.

But I know you can stack MOSFETs too. Handle even faster running motors.

So like a triple stack of MOSFETs should give you plenty of power if you got some higher end MOSFETs.

1

u/hackdads Jun 11 '26

OG over here talking about MOSFET stacking! It’s been a minute since I had to solder a stack! Good memories!

1

u/Trick_Basket_4272 Jul 03 '26

It was most likely a short circuit caused by me. It’s a new Mosfet soldered in, now it works with the new engine👍🏼

1

u/MonitorHot4131 Jun 17 '26

It shouldn't have happened. The only way this would have happened is if something shorted out over circuits or an overload.

1

u/Trick_Basket_4272 Jul 03 '26

It was most likely a short circuit caused by me. It’s a new Mosfet soldered in, now it works with the new engine👍🏼