Question about Harman Kardon AVR 2550 Receiver

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I turned it on this morning, it was on for about ten minutes, then it came two bangs in the speakers and the sound disappeared. there is still green light in the amplifier, but in the center of the consll where it should stand what channel its on its dark.

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This sounds like a problem you should refer to a qualified tech. at a service depot authorized to service this gear.

Posted on Oct 07, 2010

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What useually happens is that when one amplifier goes faulty the sensor detects DC voltage on the faulty channel and switches it into standby and disconnects the loud speakers to save burning the speach coils out and puts the system into "safe mode".
It is not the sort of repair that I can describe how to fix it online. Sorry but it sounds a bit expensive to repair, The output stage is possibly faulty on one channel only.

Posted on Oct 12, 2010


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