Normal It should have fuses inside and if there is a primair problem in the power supply the fuse can blow out , To measure are 2 things in priority the fuses can be normal fuses, glass fuses, or print fuses, but there are also could be used fuse resistors in the secundary line of the amplifier almost always or a little higher placed resistors on the circuitboard or verticalli mounted (most) that are like fuse resistors. something aberrant sometimes mounted with porcelain beads or tubes to the feet But capacitors can sometimes be the cause of problems by a humming sound if secundary but in power supply the from the rectifier and more can be become defect by a to high dc voltage or some output stage transistors can be shorted because of an clipping over 80% used volume then if it was then also the crossover in the box must be measured (inspected to) by most burned overheat components.
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Normal It should have fuses inside and if there is a primair problem in the power supply the fuse can blow out , To measure are 2 things in priority the fuses can be normal fuses, glass fuses, or print fuses, but there are also could be used fuse resistors in the secundary line of the amplifier almost always or a little higher placed resistors on the circuitboard or verticalli mounted (most) that are like fuse resistors. something aberrant sometimes mounted with porcelain beads or tubes to the feet
But capacitors can sometimes be the cause of problems by a humming sound if secundary but in power supply the from the rectifier and more can be become defect by a to high dc voltage or some output stage transistors can be shorted
because of an clipping over 80% used volume then if it was then also the crossover in the box must be measured (inspected to) by most burned overheat components.