Electric Range: no 220v funtionality
A common problem with ranges is the control board relays fry taking out some of the range functionality. I fixed one that just the oven did not work another that everything was dead. I would start here with the range unplugged look at the the control board there are usually several larger plastic covered relays look for damage on the board. since you mentioned the plastic smell it would be a good starting point. I found the parts for 1 range for 50-60$ the self cleaning convention oven was over 200, that was cheap compared to 1300 for a new one. here is a link to a utube video on how to do it. Added, The relays switch both legs of the 240V if 1 leg of the relay fried (the noise and burn smell) you would read 120 to ground from both ends of the element.