when the hotend starts to heat up. the printer starts beeping
I have about one month Ender 3 MAX. the display shows the hotend temperature -14. as soon as I turn on the heating, the printer beeps.
I tried to upload another firmware, but it didn't help.
Do you have any advice?
@jendass Check if your thermistor at the mainboard is disconnected or has a broken wire.
If it is connected disconnect it and check it with an ohmmeter. It is a 100k NTC type thermistor...so at room temperature, it will read 90k to 100k ohms. the -14 reading indicates it is infinite or open.
The most likely place for a wire break is over at the hot end so check it there...2 white wires with what looks like a glass bead on the end.
thanks for the reply. Yes, the lead wire is broken.
can i try to weld it or do i have to get a new one?So that it does not affect the resistance
@jendass I don't know how to solder. I choose to replace it with a new one. It's not expensive anyway ? LOL.