I need to figure out why this DC driver doesn’t work anymore

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Peaquin

Joined Apr 25, 2024
2
I have a 24V DC motor, but it does not work. I would like to find out which of the elements is most likely to be damaged and how to do it. From what I understand, the engine has a Hall sensor to set its position, but I don't know about the restIMG_7707.jpegIMG_7708.jpeg
 
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Dodgydave

Joined Jun 22, 2012
11,375
You can test the Q1 transistor and diodes with a multimeter on Diode function, there is a Ptc on the left side, check this on Ohms.
 

Dodgydave

Joined Jun 22, 2012
11,375
D4 is across the motor for back emf protection, remove one of the motor wires to test it.
Also the two 1.5K resistors are in parallel with the diode.
 
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