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VSX-D466S MY AMP KEEPS BLOWING THE MAIN INTERNAL FUSE ,NO SPEAKERS ARE CONNECTED WHEN THIS HPPENS.HELP.

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Bad News!
If the fuse is in the mains (power line) you could have a bad rectifier or other problem in the power supply. Most amplifiers nowadays have switching power supplies and they are not as easy to troubleshoot as the older linear supplies. If an Output or driver transistor is shorted, the power supply fuse will dump just as fast, load or no load.
Mister Phil

Posted on Apr 09, 2008

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