Gogo best gf700 strangely shut down

[saneagle]

I've just placed PCB on some paper and tested making sure my fingers weren't touching and now getting 0.L

Is that with the red probe on the track next to the MOSFETs?

 

[Hurcombe676]

It's the lower one in photo 51 am I testing the wrong track ? Il check the top now to confirm

 

[Hurcombe676]

Red probe along track at top circled in red with black probe on red , green , and blue separately It says between 7.62k and 7.71k through the 3 wires at separate tests

Red probe to lower track circled in blue I get 0.L on all three tests

 

[saneagle]

Red probe along track at top circled in red with black probe on red , green , and blue separately It says between 7.62k and 7.71k through the 3 wires at separate tests

Red probe to lower track circled in blue I get 0.L on all three tests

The track circled in red is the negative and the other is the positive. We can now conclude that all three MOSFETs that switch on the positive are open circuit and therefore defective, so that controller needs replacing. The other one should work if you connect it to the motor, battery and throttle. Is the defective one, the one with the extra wires for the LCD?

 

[Hurcombe676]

The defective one is the smaller one with less wires which I think is for the front wheel.

The other controller with all the extra wires is for the rear wheel from what I've read but I tried plugging that in and trying it but no response from throttle or anything which has left me puzzled

 

[Hurcombe676]

San eagle would you be able to tell em what else to check for before buying these new controllers and then it still don't work like how to check if the throttle works and the motor for instance while I've still got this multimeter I've borrowed

 

[saneagle]

San eagle would you be able to tell em what else to check for before buying these new controllers and then it still don't work like how to check if the throttle works and the motor for instance while I've still got this multimeter I've borrowed

You connect the good controller to the battery, LCD, and throttle, then to either motor.
Switch it on and check that you have 5v on any of the thin red wires to the motor, throttle or pedal sensor connector - nothing else. That will confirm that it's switched on and ready to work. Operate the throttle to see if the motor goes.

 

[Hurcombe676]

Brilliant thank you so much will check tommorow morning