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Minu f3 eve Bushed issues

#1
Hello I was getting into flying drones and bought a cheerson tiny 117. It flew perfectly fine. I crashed and broke a motor wire so I replaced with some new motors on eBay. I was flying and those motors smoked so I bought new ones that were made for my drone. I soldered them on correctly and when I plug in the battery one motor goes to full throttle. If I arm it then I have control over 3 of the motors except that one, it stays at full throttle no matter what I do. Please help.
 

PsyBorg

Just cant shut up!
Mentor
#2
Are you sure you wired it to a voltage source controlled by the Flight Controller and not a constant source by accident?
 
#3
Mini f3 evo brushed

Yes I made sure it was wire to a motor spot and not a constant by accident. I was looking on a different forum last night and someone told me it was something wrong with a fet? I do not know what that is.
 

TEAJR66

Flite is good
Mentor
#5
The FET is what controls that motor's speed. Each motor channel has it's own FET.

If you have the skill, it can be repaired. If your board has six motor outputs, you have two spare fets. This video will explain what kind of skill is required. https://www.youtube.com/watch?v=vFLg-vSsbk4. Keep in mind that the video id for the processor. But, it is the same thing you need to do for the FET. Much more difficult than I would ever attempt.

If you don't have the skill, the board is done and you will need to buy a new one. Unless you want to remap the bad motor to one of the other motor channels. Then you get the new FET without the soldering. This video might work for that board. https://www.youtube.com/watch?v=cEMfs_4X2VM

I realize that video is for brushless flight controller. Not guaranteeing this will work. It is just one more avenue to explore in an attempt to get you back in the air.