HELP! PLA print not sticking to bed out of nowhere

[luro02]

Had a similar issue

How long are the PEI sheets supposed to work?

I have my printer since april, so for about 4 months now. In that time I accumulated, 1042 print hours. Recently, my golden PEI sheet (that the printer came with) started having adhesion issues that resulted in some prints lifting off the plate or first layers not sticking. When I bought the printer, I had insanely good adhesion, where even tiny things stuck without problems. The last few weeks I had used my smooth pei sheet, and yesterday I wanted to switch back to the golden pei sheet. Before…

I solved my issue by wiping the plate with acetone, but there were many other suggestions in that thread.