How much are you asking for the Rev.E?

For anyone who stumbles on this thread in the future, replacing the MOSFET was cheap and easy and worked great, $0.92 vs $170 new RAMBo.

Mouser part: https://www.mouser.com/ProductDetail/ne ... cycode=USD

Thanks for all your help Ed! Talking to support over the phone, unfortunately I can't swap the connector via firmware, as the heat bed uses that 15A blade fuse, which none of the other connectors are wired to. I've got some replacement mosfets arriving tomorrow and I'll give that a shot before conde...

Just thought to swap the bed and extruded connection on the Rambo, and the bed heats right up. Rambo must be the problem, I'm assuming that mosfet. Can I replace just the mosfet or is that a symptom of a bigger problem?

Additional testing : Tried swapping the heat bed connector and the extruder connector themselves, same issue, so the connector hasn't failed. Tried the pin method all up and down both wires and the resistance stayed around 3ohms. Tried tugging up and down both wires, if there's a weak point silicone...

Is this the mosfet in question, and is it supposed to be covered in dark brown stuff? Already wiped a bunch off the top of the chip.

Hello! Some background info and what I've already tested: -Heatbed and thermistor wires have been completely removed from sheath, no sign of breakage or wear. -Heat bed ready a consistent 3 ohms even while wiggling up and down wires. -Thermistor reads 100 kOhms and adjusts to temperature from my han...

Video of the aluminum body spinning.

https://youtu.be/1f1Z5LKoXeQ

I don't know why the barrel would be spinning in the block but just so you know you can just buy new barrels (the snapped part) ... you don't need new hot ends every time. Just drop MG a email and tell them you need just the barrels. -Steve I had no idea! How exactly do you remove/install the new b...

Hello! I've been running my pair of M2 rE's for my business for a couple of years now, and have a had a repeated issue without my hotends progressively breaking. The always begin my the aluminum block rotating freely from the center rod. This causes heating issues, and it only solved by really tight...