Agreed, doing a self clean, in my experience,( for what that's worth) has killed a lot of boards/ovens. I know, I know, millions of stoves out there .Opinion: Don't ever run the self-cleaning mode.
"They did a self clean over the weekend and now nothing works." Will this be you?
Especially the ones with the display out in front above the door, self clean is in access of 900F and the heat get to the boards,
Despite better oven cavity insulation,,in addition to expensive boards there are high limit thermostats, elements , wiring and oh yeah: sticking lock switches and motors that all require a service call if your not handy.
IF you got a bunch of spilled grease, fires might erupt inside at the high temps. . One is supposed to clean oil spills and large food bits beforehand , but how many peoples RTM. One lady wanted to clean her frying pan while oven cleaning and that's a no-no,as well as goodbye handle.
There is also the fume problems with some pet birds and with people with compromised lung function from the incinerated ash.
Also there are reports that certain foods during oven cleaning produced carbon monoxide.
rant over