troubleshoot kenwood ka-76 home stereo intergrated amplifier blowing fuses?
there is no burned smell at all but every time turn on blows a fuse
Open up the cover and do a good visual inspection and look for anything obviously wrong or loose. If that is good, disconnect everything (speakers and all inputs) and see if the fuse still blows. If it does not blow, an external component may be causing the problem, like a shorted speaker or too low of an impedance speaker or positive and negative terminals shorted by a stray wire strand. Usually the output portion (amplifier section) is protected by sensing circuits. If an output was shorted, the system would shut down. I sounds like you have a power supply problem. The only way to attempt to fix it is with a schematic and a Variac (variable transformer) that plugs in between the receiver AC plug and the wall outlet. You need to slowly increase the variac voltage enough to power up the receiver without blowing the fuse. Once there is some power on it, you have to take voltage measurements of the power supply and find where the problem component is located and replace it. If the power supply is good, look for shorted output transistors in the power amplifier section. If one of those are bad, they are usually replaced in matched pairs. Good Luck
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