Lantys Rostock Max v2 Build

[Lanty]

You should give your hotend - thermistor a good inspection. Shorts in the wiring no matter how momentary are the common cause of card failure.
The card may just have decided to die but that is not very common, that's why I would give the wiring a good inspection.

You are correct Eaglezsoar!
Or pretty darn close anyway...I neglected to tape off the wires I stripped for the Peek and PLA fans and am fairly confident the bare wired touched and shorted out the F3 fuse on the Rambo board. There are 3 fuses total on the RAMBo board 2 small Nano and one larger Automotive style (I didn't originally know about the Nano fuses). Once I learned of the 2 smaller fuses I checked them and found one was blown. I borrowed a fuse from a guy I work with (fellow Max owner) and I'm back in business.

SeeMe CNC did email me back yesterday and called me this morning to assist me in diagnosing the problem. I explained the situation and that I was most likely the cause and they offered to mail me a couple spare fuses along with the missing #10-32 Nylon thumb screws. So my first encounter with customer support was great and my board didn't get fried!

[Eaglezsoar]

I am glad that it was just a fuse.

[dgriff]

I entered the g code command and watched the hot end as it heated up. I heard a couple of popping noises and there was more smoke that I would have expected (like a smoking cigarette) so I cut the power!

I had the exact same popping noises when heating up my hot end for the first time. I think it was probably small air pockets trapped inside the hot end by the RTV sealant - when it heats up, the air expands and pushes it's way out of the hot end with a popping sound. I also got some smoking, but it was a moderate amount - like blowing out a small candle.