[Elecraft] P3 display issue

[Russ]

I don't know what happened but my P3 suddenly has no spectrum display 
and the waterfall is solid pink at all span settings. I tried to reset 
the reference level but the only setting option available is "nan".

The P3 still tracks the K3 VFO. I tried to reset the scale, power cycled 
the P3, checked the rear cables, reloaded the current firmware and 
adjusted the RF gain on the K3 with no change. I have been running 
firmware 1.26 for some time with no problems.

Serial number is 682 with no VGA adapter.  Any suggestions?

Thanks.
Russ- KG7VQ