KB 2 Power issue

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calldan
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Posts: 1
Joined: Sun Oct 02, 2016 1:41 pm

KB 2 Power issue

Post by calldan » Sun Oct 02, 2016 1:47 pm

My older KB 2 started to shut down power after 15 or 20 minutes of playing.

If you wait a couple of minutes it powers back up and will play for another 15 or 20.

I running a guitar and Microphone through it.

Any ideas?

Thanks,

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Enzo
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Posts: 9535
Joined: Fri Sep 12, 2008 10:24 pm
Location: Lansing, Michigan

Re: KB 2 Power issue

Post by Enzo » Sun Oct 02, 2016 8:43 pm

Sounds like it is overheating, and the thermal breaker is cycling off and on.

There is no bias adjust on an LM3886, which makes the chip itself my first suspect.

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