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Old 18th Aug 2018, 9:27 am   #14
Radio Wrangler
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Join Date: Mar 2012
Location: Fife, Scotland, UK.
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Default Re: Fuses keep blowing on Rotel RX400 amp

Output transistors are a common failure in audio amps. Keeping popping fuses hammers the rectifier somewhat so it should remain a suspect.

It would be good to break the power feeds from the reservoirs to the amplifiers to see if the power supply then comes up. The sequence would be to fix the power supply if it needs it, and then check the amplifiers one at a time.

David
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