Magic chef oven - thermistor ref voltage issue

[Use2bavolvo]

I am having an issue with my wall oven temperature control is ~180f out of spec. The thermistor is measuring correctly but I noticed the ref voltage appears to be off. With the thermistor wires attached it's reading ~3.4vdc with the thermistor disconnected it's around I9.8vdc. my understanding is the temp is read off the resistance from the thermistor which leads me to believe the issue is with the ref voltage.

Another observation is the temp setting and readout at lower temps is way off meaning the oven thinks room temp is 300f and bake relay doesn't engage unless temp setting is much higher..

Anyone have any thoughts on what's going on? I plan on rreplacing the caps this thing is 30yo.

I've also I'd a fan resistor that's not registering any ohms ATM the fan runs all the time so not sure if that's also causing the issue.