I went to remove a blob on the nozzle with some tweezers. As I am making contact with the nozzle everything goes dead. The red power light comes on, but nothing else. Did I just short out my power supply? The only fuse I see is a 15amp blade on the board and it is fine.
You just blew a fuse most likely. If you bridge the heater core wires to the nozzle with the auto leveling, BAD THINGS occur. You’ll want to replace the two small grain of rice sized fuses inside the control box on the rambo board. The larger bed fuse should be ok. If you are still under warranty a call to support might not be a bad idea.
I emailed support and then took a multi-meter to start checking continuity. By the time I moved everything to get to the panel and had removed it, I got a response from Tech Support. Piercet, you are correct, I blew Fuse F3: Logic, Heat, Fans according to this picture: http://reprap.org/wiki/File:Ramb1-2-fuses.jpg
The thing I love is they included links to replacement fuses from 4 different suppliers in the email response. Talk about above and beyond.
NEW RULE #1: NO metal anywhere near the nozzle when the power is connected. EVER!
I did a similar thing using a wire brush in the nozzle. Keep those tweezers handy as you are going to need them once you see the size of the fuse you are going to have to replace. Should be a law against producing such a small object that fat fingers may have to be used.
If you are needing to buy the fuses locally, the small white fuse holders are Little Fuse OMNI-BLOCK fuse holders. They are compatible with NANO2 Fuses. Fast or very fast acting are recommended. An example part number for replacement fuses is 0448005.MR
I just made this tragic mistake! HA! Anyone have links or suggestions for ordering these fuses? I’m currently overseas and just trying to get some help in finding these mini fuses.