How to fix a humbucker pickup

1. How do you fix an out of phase pickup?
2. How do you diagnose a bad guitar pickup?

How do you fix an out of phase pickup?

You can fix the phase of pickups in two ways: First, you can magnetically change the polarity on one of the two pickups by physically reversing the magnet 180 degrees or remagnetizing the magnet with opposite polarity either from North to South or South to North.

How do you diagnose a bad guitar pickup?

Measure the pickup's resistance. Place the black probe to the negative lead and the red probe to the positive lead. When a resistance reading is obtained on the meter, the pickup is functioning, the higher the reading, the better. If no reading is given, the pickups are probably faulty.