oven shuts off

[SIZE=3]Jenn Air / Maytag
electric - Convection Oven – cooktop

having troubles – seeking advice

the oven just shuts off after a few hours of cooking, entire screen blanks, enters a mode where the self-cleaning latch locks the door. ???

last time it occurred 2.5hours into a turkey cook. Just needed 1.5 more hours!

is it the "electronic oven control assembly" for $124.
the "long electrical oven sensor" for $35
the relay board?

tried the circuit breaker – didn’t help

let the oven cool for 20minutes – then I could the oven to turn back on again.

cooktop works fine.

what do you suspect?
thanks,
John
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