Live equipment chassis


A mate of mine is reporting that he gets a small electrical shock when he touches the chassis of his audio equipment.

While i'm aware of several instances that can give rise to this happening does anyone here have (or point me towards) a simple methodical guide for him to follow to find the cause? Thanks.
kiwi_1282001
Think of the income potential, equipping all those squirrels out there with miniature Faraday Cage suits. I'll bet Obama and the ASPCA would finance it! Well- It would end up coming out of taxpayer pockets, but........
Are we as a nation becoming Fascist? I mean melting pot is old stuff. If you do not agree with the right wingers, they want to (basically) get rid of you. Thanks Rodman99999 for making ANOTHER cheap shot that demeans this site.
Actually- The nation is becoming more Socialist by the minute, in case you haven't noticed(are you a blond, by chance?). Funny, how little sense of humor Liberals have!! BTW- You're quite welcome.
Have him get a polarity tester at the hardware store an outlet could be wired wrong.