Question about Krell KAV400Xi Amplifier

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I have a Krell KAV-400xi amplifier that won't turn on. Our town had a planned interruption to it's power supply for maintenance and when power was reconnected my amp failed to turn on. The amp was off (at the device not at the wall socket) before the power outage. Can you suggest what may have happened and what you think might need to be repaired or replaced? Thanks, Leigh.

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  • yatosser Sep 08, 2011

    On the face of it the information appeared helpful however opening the back didn't reveal anything that looked like an obvious fuse near the power inlet socket or anywhere for that matter. The only fuses were speaker fuses and they were fine. So I've had to send it to a repairman who I hope can fix it as I shudder to think what postage might cost from Australia to U.S. and back for this weighty Krell product.



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Try to plug it in other known working outlet, if still the same symptoms, this is an indication that there's a faulty parts inside the unit. First thing to check is the internal fuse of your unit (I'm assuming here that the unit has no led light at the front panel), if it is already out of warranty, open the top cover and check the continuity of the fuse using the multimeter, if you found it open replaced it with same current(ampere) rating and then power on the unit again... Sometimes fuse fail because of voltage surge to guard other parts...


Posted on Sep 04, 2011


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