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Permalink Reply by Tom T on September 14, 2015 at 11:01am

What kind of pickup are you using? It makes a difference.

Is the pickup cover grounded?

Are the tone and volume pots grounded?

Are the strings grounded?

If all are grounded to the negative tab of the audio jack and you still have hum, then check your audio cable. Is is a good, shielded cable?

Also, check where you are playing. Are you near florescent lights? or any motors (fans, etc).

Also, try moving around the room while playing to see if the hum changes.

There are many, many sources for hum, so it takes a methodical approach to eliminate it.

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Permalink Reply by Thumper on September 14, 2015 at 12:13pm

It's a piezo glued to the box, the volume pot is not grounded neither are the strings. I'll check the other suggestions before I tear into the completed guitar. As a matter of fact, I've got a build I'm working on now and I'll do the afore mentioned groundings before I button it up. Thanx.

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Permalink Reply by John Sawyer on September 16, 2015 at 2:15pm

Volume pot should be grounded. Is the piezo wired right? The silver disk is the hot lead, should go to the tip on the jack. Others have reported problems with cheap cables....

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Permalink Reply by Thumper on September 17, 2015 at 4:34am

I tried a second cord, it made a significant drop in the hum volume, it's barely audible now so thanx for the reply's!!! Not being an audiophile and having to wear hearing aids the playing is now more than acceptable to me. 

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