Looks like a hardware problem to me.

Disconnect any load on RA1 and observe the pin using
an oscilloscope.

If you are using an LED as the display element, is it
connected in the correct direction? Is the series
resistor the correct value? (measure it with a meter)
Try something between 330 ohms and 1k ohm for starters.
Is the LED defective? try exchanging LEDs between RA0 and RA1.
You should have one side of the LED connected to ground.

You might have a short between RA1 and an adjacent pin
or component. You can check that with an ohmmeter while
the circuit is turned off.

Fr. Tom McGahee

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