Don't let the man bring you down.

School of Rock actor Joey Gaydos Jr., who played guitar phenom Zack in 2003 hit Jack Black movie School of Rock, has been arrested 4 times in just 5 weeks for allegedly stealing guitars and amplifiers.

According to reports Gaydos has allegedly been asking to test musical gear and then walking out without paying. Then pawing them off for cash.

He has now been arrested 4 times for this.

The actor & musician allegedly swiped a blue Epiphone Les Paul worth $800, a black Fender Stratocaster worth about $700, a gold top Gibson Les Paul worth $1,900 and an unidentified amplifier in separate incidents.

Police say Gaydos, 27, confessed to the thefts and blamed a drug problem.

He has entered not guilty pleas in court for all but the latest incident, which involved the amplifier.