grim_d
Unlikeable idiot.
- Messages
- 4,218
- Location
- Scotland - Ayrshire
I have a Mirka electric orbital sander that is poorly AGAIN.
I believe the issue lies with the little magnetic proximity sensor that controls the variable speed.
Basically for a while it was speeding up and down during use and being a general nuisance, a light bump to the trigger would solve it, now when I switch it on it either acts as if the trigger is fully depressed or does nothing.
I have circled the component in question, it senses how close a magnet on the bottom of the paddle is and adjusts speed accordingly. I don't know what I'm looking for, is it a reed sensor? I can't find any 3 leg reed sensors.
Or is it likely to be a custom component? It's marked "u2" on the board which I believe designates an integrated circuit?
I'm comfortable enough soldering surface mount components if I can find one to replace it, a replacement control board is £90
I believe the issue lies with the little magnetic proximity sensor that controls the variable speed.
Basically for a while it was speeding up and down during use and being a general nuisance, a light bump to the trigger would solve it, now when I switch it on it either acts as if the trigger is fully depressed or does nothing.
I have circled the component in question, it senses how close a magnet on the bottom of the paddle is and adjusts speed accordingly. I don't know what I'm looking for, is it a reed sensor? I can't find any 3 leg reed sensors.
Or is it likely to be a custom component? It's marked "u2" on the board which I believe designates an integrated circuit?
I'm comfortable enough soldering surface mount components if I can find one to replace it, a replacement control board is £90