Originally Posted by Andy M.
I suspect the burning smell/smoke is not related to the window shattering. The glass issue is probably just something that happened because of it's weakening over time. A small invisible crack develops and with just the right stress, shatters.
The smell and smoke may be from the cheese spread on your bread or something else that spilled in the oven. Something like a cheese spill doesn't take a lot of heat to burn.
Just a guess on my part.
I don't think the burning smell/smoke is related either, though, my son thinks maybe the smell was the glass deteriorating--I'm not convinced. I don't think glass 'smells' or 'smokes' when it degrades.
I think we rarely heat that oven over 400F and the residue from the baking/cooking, starts to burn at higher temperatures. I bake all the time, so does my son, roast turkey, heat pizzas, beef pork and venison roasts--we cook in there almost daily.
I'm one that takes the convection/micro outside once a year and burn off any residue at 500F just so it won't smoke at all during the winter. (We don't bake at high temperatures in it for the most part.)
It wasn't the cheese (the loaf was wrapped in foil) but I do get the point and agree with that.
The only test I need to do is test oven temperature now, and frankly, after my google search, I think it was just tempered glass giving way after years of use. (I'm thankful for my 15 years of use.) No jolt needed, no weakness needed, no temperature needed, just a freak accident. I can see this happening after years of use, what I can't understand is new ovens bursting oven glass after only months of use (found on google searches).
I'm content in needing to replace this appliance, and I appreciate all your input and thoughts on what has happened. I'm thinking it's a once in a lifetime occurance. All of you, thank you for being there!