Dehydrated Apple

Dehydrated Apple 2018

This year we had a few apples on the tree (due to the harsh winter?) and so i got the dehydrator working again:

The display on the dehydrator shows the relative humity and temperature:

unfortunately, while I was using it, the display corrupted:

I'd noticed a small corruption now and again but the problem seems to be more persistent now. I'll probably have to break out the scope and see what's up. Fortunately the control of the fan and heater appear to be working  so I can use the dehydrator, just operating it a bit blind.