Non Video Game Transistor Help Needed

Anthony605

Well-known member
Joined
Nov 13, 2013
Messages
1,299
Reaction score
466
Location
HOWELL, New Jersey
Hi there! I have a DeWalt drill that has several speeds and a braking function. Everything works fine except that the braking feature no longer works. The braking feature works by momentarily reversing the current to the motor when you let go of the trigger.

I took it apart and see that there is a transistor incorporated into the trigger switch. The transistor has the following stamped on it -- F 1J41AN 75332P. I am assuming that 75332P is the actual part number? The F in the beginning seems to be just a brand symbol. I attached a pic of the trigger assembly. The transistor is normally screwed to the heat sink.

Anyway, is the transistor responsible for reversing the current when the trigger is released? Does anyone know what a good replacement would be if that is the case? It seems like an easy fix. By the way, this is kind of video game related as I use the drill to repair cabinets!!

Thanks
 

Attachments

  • IMG_3820.jpg
    IMG_3820.jpg
    512.7 KB · Views: 21
Maybe. :D

You can try to measure at the FET when the brake comes in. There should be changes.
 
Back
Top Bottom