The clutch motor....

[DonInReno]

On 4/26/2023 at 8:45 AM, sjharumph said:

We have a couple of the SP-1100 motors.  They've been great until today.   E3 on a very lightly used machine.   Seems a component on the board has failed.   Anybody know of a place that would diagnose and repair the board ?   Have watched a youtube vid but I'd rather pay to have that done.  Thanks 

That control box was handy today so I took out the two case screws, dusted it off and snapped a picture.  I know very little about electronics, but if you look very closely at your board there’s a chance it will be something obvious.  Always get rid of any static electricity and touch the aluminum case before touching anything inside.   Let it sit for a number of minutes after it’s been unplugged to allow the capacitors (round black thingies) to bleed off or you may get shocked.

I don’t know what that trouble code is and didn’t keep the manual.

Don’t blow the dust off at first - some metallic threads or high humidity dust actually conduct electricity and a dust bunny may be a clue.   If you have a lot of dust I’d blow it off and try the controller.

Check the fuse.

Check voltage coming in - I was at a clients house and power tools were acting strange - checked voltage and the entire house was at 90v instead of 120v - turned out the transformer that fed the house was bad and the power company had to replace it.

Others, much smarter than me, have said they look at the capacitors for leaks or a bulged top.  Then look closely at all chips for dark spots that might indicate they are fried.  All the solder joints are carefully inspected for cracks or missing solder - the surface mounted stuff is very hard to inspect so drag out that magnifier.  Then look at any wiring (inside and out of the box) for anything out of the ordinary, especially at connections and unplug wires to feel for good fit.   Same for the speed controller circuit board and connections.

If that doesn’t work I toss it in the trash and get a new one.lol