hi there! , ive been having a lot of prime tower failure since i have my a1( december )
So ive decided to do a fist layer check print ( created a cube and morphed it into a 1 layer print over the whole bed )
Ive noticed a wierd area on the bed ( exactly where slicers put most of the prime tower )
its like if this spot was either to low or different heat? it always have the same discolored area also …
i always clean my plates with isopropyl 90% and also cleaned them with soap and water + isopropyl for these test …
It looks like you might have a bad heater unit in the bed or a bad thermistor. When I had my heatbed go bad, the actual bed temperature would go way higher than what it was set for.
Does your bed temperature reading fluctuate more than 1 degree while printing? Set the bed temp to 65C on the control panel and then watch what it does over time. If you have a thermal thermometer, look at what it reads in different parts of the bed. The heater unit is two U shaped coils, so heating will not be totally even.
