> Inputs should not sink current unless the PIC is not powered and
> you are sinking current through the protection diodes

That's one possible pathway. In normal operation you might set the
pin as an output with logic 0 drive, current passing through the high-
side load and the low-side N-ch FET

Strictly in the context of what Jason has described ..........

It appears all pins are set as inputs and apparently the LEDs light.
The current able to be sunk through the input logic is not enough to
light the LED, but with the PIC in a non-digital state -  no settings of
ANSEL, ADCON, CMCON or whatever the 690 has -, everything
floating, including /mclr, the current could be being sunk by some
odd pathway. In such a situation there is no control
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