I have no way to test and no knowledge as to how to test, I turned it on a light went on and the fan started. Thank you and good luck you may have a fully working amp in excellent cosmetic condition for a good price.... Or you may have to fix it. The item "QSC RMX 2450 PRO POWER AMPLIFIER" is in sale since Thursday, September 19, 2019. This item is in the category "Musical Instruments & Gear\Pro Audio Equipment\Amplifiers". The seller is "dubblebubblegum" and is located in Delta, British Columbia. This item can be shipped to United States, Canada.