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The easiest way to diagnose bad components and pickups is to measure their DC resistance with an ohmmeter. Seymour Duncan has a list of DC resistances in their Tone Chart for all of their pickups. Potentiometers should range from their given values (500k, 250k, etc.) to zero and switches should read either infinite or zero…

This is normally caused by humbucking pickups being wired out of phase. You can either switch the hot and ground connections on one pick up of flip the magnet to correct the out of phase issue.

Amp noise can be caused by a number of things including a poorly grounded source of electricity, poorly shielded guitar cables and fluorescent lighting. Try changing these things one thing at a time to isolate the problem. Also modern high gain amps with cascading gain stages not only amplify your signal many times over but…

The most common problems relating to noisy guitars are improperly wired pickups and poor grounding. With Seymour Duncan humbucker pickups it is important to not only connect the red and white wires but also to insulate them with electrical tape or shrink tubing. If this connection is not insulated it can come into contact with…

There are commercially available electronics parts cleaning solutions that sometimes work. It’s generally better to just replace worn components though. There is a list of parts suppliers on this FAQs page that carry everything necessary to breathe new life into an older guitar. You will also want to double check your solder joints and if…

There are several things you can do to help brighten up your pickups if you are getting a muddy tone. First, try adjusting the height of the pickups by adjusting the screws. If that doesn’t work, try changing your Potentiometer value, if using 250K try 500K. Lastly if that still doesn’t work, try connecting a…