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Re: HP 89441A / 89431A RF Section Help


 

Thanks Matt.? That's very good to know - I'm still poking around, trying to figure out where the problem actually lies.? I think my next step will be to trace out the +8V regulator circuit and compare it to others that don't have an overcurrent condition.? I'm hoping that the regulator drops the voltage when it thinks too much current is being drawn.? It's difficult to know for sure without a schematic. :)

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