2012 Sportsman XP850 Esp stopped charging.. and esp light on….
Testing the stator.. OK
No volts comming out of the regulator..
decided to open the regulator by removing all the sealing rubber..

Easy to remove be careful not damaging the board..
Then.. COROSION !!

That corosion came from the yellow wires by capilary action.. can you imagine..
the connector of the stator had humidity Inside.. so put full of dielertric grease in there..

I did an extent research to find if a component was toasted.. tested the diodes and SRC’s.. all good..

be carefull here… plastic insulators have to return at there right place !!
So.. found nothing wrong except the corosion that should have created short circuit…
Cleaned with electrical contact cleaner and a tooth brush.. reassemble and .. tada.. all perfect now…

Closed the unit cap with silicone… make sure its sealed tight