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Hello everyone

I have built my Rostock MAX, and having some problems with hotend heating. It blew up the fuse(5A) on its first run, and 3 more consecutively at about 190'C. So I moved on to 10A fuses, and it wouldn't kill the fuse, but stops heating the hotend with a "pop" sound at around 190'C. restarting fixes the problem but does not go hot enough. Sometimes it goes to almost 200'C, but never above, and printing doesn't start.

Any question is welcome and I really want to fix this.

Thank you

If you blew a fuse, chances are you have a short somewhere in your wiring to the hotend. Before anything else I would say check your wiring with attention to how things change when the hotend is hot - wires sagging near the hotend, insulation melting, etc. You could also take a look at the resistance of the heating resistors to make sure they're near their spec and similar to one another.