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It appears I have lost the bias supply going to the side Mic jack on my K3 Mini. There is no bias voltage on the tip of a test cable. However there is 4.7-4.8 volts appearing on pin 6 of the 8 pin front panel mic connector.
I note that turning on the Mini from a cold start I see 3.8vdc on the tip of the test cable but it only lasts for a few seconds and very quickly decays to zero.
The Menu setting rP.L bIAS is configured and turning the bias off/on by tapping 2 does not effect the volatge 4.7 on pin 6 . It is always on.
What do I do.? I am not thrilled about taking the Mini apart as I have ZERO technical information about how to dissaasemble it. Nor do I have a schematic to help ID where the fault may be.
I have an outboard bias box that came with my CM500 so I guess I can use that in a pinch.
Any comments?
73 Frannk VO1HP
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