Finding & Fixing Hum

.:Finding & Fixing Hum:.

This article gives some good tips on how you can find and fix hum related issues in your audio system.

Very few audio or video systems are dead quiet. There are usually always a few hum related problems. If your system has a bit of hum, is it the transformer or not? How do you determine the source of hum and what can you do about it?

Sometimes hums and buzzes are quite obvious, sometimes not. The 'hum noise' usually comes in two flavors, a low non-irritating drone (50 or 60 Hz) or a slightly higher pitched buzz or raspy/irritating 'angry insect' sound (100 or 120 Hz). Video hum is usually seen as diagonal bars across the TV or screen of a projector.