Question about Behringer Bx4500h Ultrabass 450w Bass Amplifier
It is likely the power amp chip has shorted. This puts the unregulated dc into the speaker and you will hear the hum. DO NOT operate this way as you can burn up the speaker. You will find that the LM3886 chip on the heatsink has failed. They are about $7.30 from Digikey. They come in two lead bent versions. Make sure to get the correct version and use heat sink grease wheen installing.
Posted on Nov 28, 2011
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Posted on Jan 02, 2017
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