I've poked my head in the oven & can see there's fan there... However, I don't think I've seen it turn, & then again, maybe it's just a "baffle" and maybe the fan is deep in that recessed fixture, somewhere behind it... I hear a "faint hum", if that...
How-so-ever, Convection to me doesn't seem to be that important, anyway... My sister went from an ancient RCA Whirlpool electric cooktop w/ 3 small burners & 1 large one (which gave out & that one was soldered in, unlike the small ones which were plug-in's--more easily replaced,--and NO indicator lights that would tell that the thing was even ON!--and an equally antique matching wall oven w/ no self-cleaning, but at least automatic baking--of which the timer would be waaaayyyy extremely complicated even with consulting the owner's guide!--and the darn thing wasn't even connected right, as the elements tended to cycle up & down as it was baking (I don't think she ever broiled with it) to a Jenn Aire electric glass top cooktop--much like what you'd expect a NEW one to be like: Touch Pads, Adjustable "Burners" & all; and, too, you had to be sure those touch pads wouldn't accidentally be turned on, too! As well as a full-featured Maytag electric wall-oven w/ convection cooking! ("That thing will just BREAK!", my mom would say... She went from a basic Bradford w/ the knobs on the panel above the oven, in harvest gold, to a Tappan double-decker range/microwave/self-cleaning conventional oven combination, in almond, to a Montgomery Ward "DESIGNER SERIES by Tappan", also in almond & self-cleaning, to a white Maytag w/ a glass cooking surface, & a self-cleaning oven, but by now she's grown so disenchanted w/ the self-cleaning feature, that she really let that oven go & it's hopelessly getting dirtier & dirtier...)
The fan there tends to make a lot of noise, & while it speeds up baking, I guess I can't necessarily say I'd envy anyone w/ a "turbo oven"...! (I refuse to use my fan on my range hood, because I dislike the noise, & found both the one in my home--which incidentally CAME WITH all those fancy appliances--and the apt. we lived in ineffective at filtering the air & preventing the smoke detector from going off (both places have/had a super-sensitive one placed right near our cooking area--not that I would ever neglect to watch what I'm making...)
Yes, "Daddy's Little Girl" she IS! In every way... Everyone says she looks like me, right from when she was born! --More to come...!
-- Dave