Tracking down a buzz in my amp taught me to value solid connections

I had this old amplifier that started making a constant buzz. It was driving me nuts during movie nights. I thought it was a bad capacitor at first, but after testing, all were fine. Then I checked all the solder joints and found one ground connection was loose. Resoldering it fixed the buzz completely. Now I always double-check grounds first in any audio repair.

3 comments

3 Comments

samwalker27d ago

Ever notice how many weird problems just come down to a bad ground? I had a similar thing with a guitar pedal, a horrible hum that came and went. Spent ages swapping cables before I finally opened it up. The ground wire to the input jack was just kinda resting on the solder pad, not actually stuck down. A quick touch with the iron and it was dead quiet. Makes you realize how much noise a tiny break in that path can let in. Always my first stop now too.

willowadams22d ago

It's funny how a solid ground is the quiet foundation for so many things. Good relationships need that same kind of reliable connection to avoid static. When that path breaks down, everything gets noisy and confusing.

morgan57427d ago

My buddy had a radio in his old truck that would buzz like crazy every time he hit the brakes. He was ready to rip the whole unit out. @samwalker your post made me think of it. Turns out the ground strap from the engine to the frame was totally rusted through, so the brake lights were finding their own noisy path back.