Heating bed over heats

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jhoarty
Posts: 16
Joined: Mon Mar 16, 2015 11:48 pm

Re: Heating bed over heats

Post by jhoarty » Mon Apr 20, 2015 10:10 pm

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!
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zhangxueyou
Posts: 1405
Joined: Fri Feb 06, 2015 1:33 pm

Re: Heating bed over heats

Post by zhangxueyou » Tue Apr 21, 2015 10:29 am

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?
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jhoarty
Posts: 16
Joined: Mon Mar 16, 2015 11:48 pm

Re: Heating bed over heats

Post by jhoarty » Tue Apr 21, 2015 2:23 pm

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!
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