Vxxs wrote:I did rest it in the past with the wire brush, but that was months ago. This last print was 12 hours and successful, it was just restarting when i came home. So you think maybe someyhing blew out the controller? So its scrap then
Not necessarily. Most of the ones that blew out where repairable depending on the version of your controller. Where the 12 volts plugs in at which is a white connector with yellow and black wires, there are a couple of surface mounted resistors. Those should measure near short as they are zero ohms and being used as fuses. If one or more of those measure high as in several hundred ohms or more then they have burned as they should. Depending on your soldering skills you can order replacements from mouser or digikey and replace them. If those are not blown then the issue lies deeper in your board in which case yes the board is scrap.
One last thing you could do is measure the resistance across the heater. Unplug it at the top of the extruder and use a meter to measure from pin to pin in that connector. Its a 40 watt heater running at 12 volts so the resistance should be right around 3.33 ohms. If it is lower that is bad.
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