There is a place on the national highway just north of Robinson. It's a tiny bamboo/plywood building on the right hand side of the road, just a few meters before the bridge.
Driving from dumaguete on the right hand side just past freedom park and before Gangs small shop repairs fans and does good work
I had a fan successfully repaired at a small shop on the right side (north side) of Palinpinon, maybe 500 m up from Larena, just at the left curve, couple years ago.