Thanks for all the replies, AndyPanda when I looked mine was exactly as you described. Cleaned the paddle, crimped a new connector on and all is working. It still throws a Err2 upon power on but otherwise heats up, shuts on off at temperature and I am good to go. 10 minutes fix with a $0.10...
My MES 40 is throwing an ERR2 as soon as I turn it on and select "Set Temperature".. it beeps, error goes away and I continue to enter temp and time. Heat light then comes on but it does not heat.
Looking for any ideas prior to getting a new one (definitely not a Masterbuilt though).