Rapido heating up when switching on printer

[mbunjes]

I bought a new heater core for my Rapido after I managed to brick the old one.
INstalled it and connected it to the SB2040 canboard. However on switching on the printer I immediately saw smoke and the temp read 300 degrees !

I measured the voltage on the heater connector of the SB2040 with the rapido disconnected and it read 24V. This can't be right.
I didn't change anything on my perfectly working Trident.

Everything connected to a Octopus 1.1 board

Update : I measured the new heater and it turned out to have a short that effectively toasted the mosfet on my SB2040. Phaetus has been contacted.

Edited October 7, 2023 by mbunjes

[mbunjes]

Sadly though, this was 5 days ago and Phaetus did nor respond, which frankly I find rather alarming.