When I use an ABS default file, preheating starts and I wait and wait and …
The nozzle reaches the 235° quite fast. But the Heated Bed seems to be stuck at 78-79°. Sometimes it goes up to 80° for a very short moment and then, it falls back to 78°. I’ve never seen 81° or 82°. With a lot of luck, the 80° moment is long enough to start the print. Sometimes it happens after 20 mins, sometimes after 30 mins. Sometimes my patience is the limit.
When I manually edit the gcode files and change M190 S80 to M190 S79 printing starts after a some minutes.
The SnapMaker stands in living environment (22°C room) and is in the enclosure. So it is definitely not a matter of environmental cooling.
50° for PLA is no problem at all. It starts after a few minutes.
Did I get a weak Heated Bed?