Archived from the Tools In Action forum (Makita). This thread is read-only.
I have a brushless (just gave it to my boss, so don’t remember the model) 18V drill that has suddenly started running way too fast. A coworker almost burned it out driving a few screws, it got way too hot doing almost nothing. I tried searching for the problem online, but found nothing. It’s WAY too fast and very noisy!
Anyone else had this problem? Anyone know what’s happend?
-Hal-
Output is constant and maxed out. Either the driver transistor has shorted out or a sensor on the control board failed. Replace boards in it but frankly with prices what they are it’s scrap.
Normally the control board limits and controls voltage/current so it will crank it up if it gets loaded down then back off when it is up to speed. In your case it’s not doing this anymore.
Output isn’t constant. The max speed is just a lot faster than it should be.