RAMPS Fuse/MOSFET extremely hot, shut off print bed December 15, 2013 12:52PM |
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Re: RAMPS Fuse/MOSFET extremely hot, shut off print bed December 16, 2013 12:16AM |
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Re: RAMPS Fuse/MOSFET extremely hot, shut off print bed May 19, 2014 12:15PM |
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Re: RAMPS Fuse/MOSFET extremely hot, shut off print bed June 15, 2014 07:29AM |
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Re: RAMPS Fuse/MOSFET extremely hot, shut off print bed June 17, 2014 07:59AM |
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Re: RAMPS Fuse/MOSFET extremely hot, shut off print bed June 17, 2014 08:16AM |
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Re: RAMPS Fuse/MOSFET extremely hot, shut off print bed June 17, 2014 03:58PM |
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Unplug the wires from the electronics. Actually measure the resistance of the wires going to the heated bed. V=I*R so if indeed it's 10.5v and pulling 3 amps you should measure around 3.3 ohms which is 3x what it ideally should be.Quote
happygoluckyaussie
I have been using a 300W atx PS, I also have roofing insulation under the heatbed to stop heat escaping. I am just wondering about my heatbed itself, it is only pulling about 3A and has 10.5V across it which when calculated out means that the resistance is well above the 1.2 ohm it is supposed to be.
That is correctly wired.Quote
In saying that though, the terminal wiring is a bit strange, the bed can take 24V or 12V depending on the pins you solder the wires too. It is a sainsmart heatbed and I have shorted solder pads 2 & 3 and connected the -ve wire to them and the =ve wire to the solder pad 1...
Re: RAMPS Fuse/MOSFET extremely hot, shut off print bed June 20, 2014 10:10PM |
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Re: RAMPS Fuse/MOSFET extremely hot, shut off print bed July 02, 2014 06:04AM |
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Re: RAMPS Fuse/MOSFET extremely hot, shut off print bed July 05, 2014 08:20PM |
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Re: RAMPS Fuse/MOSFET extremely hot, shut off print bed July 06, 2014 04:39AM |
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