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Re: Heating bed over heats
Posted: Mon Apr 20, 2015 10:10 pm
by jhoarty
Hello, I have the exact same problem! My Prusa i3 is the Arduino Mega 2650 board with Ramps 1.4. I have been successfully printing now for about a month and the heatbed suddenly won't stop heating up!
Re: Heating bed over heats
Posted: Tue Apr 21, 2015 10:29 am
by zhangxueyou
jhoarty wrote:Hello, I have the exact same problem! My Prusa i3 is the Arduino Mega 2650 board with Ramps 1.4. I have been successfully printing now for about a month and the heatbed suddenly won't stop heating up!
Cooling MOSFET is very important, how do you mount the mainboard to acrylic board?
Re: Heating bed over heats
Posted: Tue Apr 21, 2015 2:23 pm
by jhoarty
Ahhh yes, the fan wires are very weak and one broke. I will need to buy a Ramps and a new fan from you. I will do that now. Thank you!