I have a standard Creality Ender 3, probably bought it new in 2019 well before V2. I ordered a V2 a few weeks ago which had a defective board in the sense that the micro SD card wouldn't latch. Amazon sent me a new one board. Installed it, works fine. I took the bad one and put it in my old Ender 3 thinking I would rig something to hold the card in place. That works except for one thing-- the bed gets hotter'n hell. I usually run 60c and the gcode of my test program reflects that. But as I watch the display, it hits 80c pretty quickly so I shut it down. There seem to be settings for the machine itself which I also set at 60c. The heater ignored that as well as the gcode heat setting. Any ideas? I appreciate any help.