Thanks for the replay's.
Waitaki,
Themistor does read room temps. When I tested it, it is reading 94.2 ohm, ot sure if that is good.
I do not have a heat sink on the Mosfet should I have one on it. It has not been getting hot just the fuse.
As for wire I am running 14 AWG from ramps to the heat bed. Also when I test the power on ramps D8 I'm getting 11.90 volts to a solid 12 volts. I have also checked the volts on D8 with the hot end and motors running to make sure I was not losing power, and everything was good.
I do have a fan running on the ramps, I have two fans blowing on it in two places so that the ramps is getting air across the whole board.
It does not matter aow I trun the bed on it does the same thing runs for a few sec and then shuts down, and that big fuse is very hot.
GowthamJGR
I have checked the meter and it doesn't read any ohm's when probes are together, so I'm good there.
I just tested the bed using just the power supply and it heats up, the LED comes on with no problem. Is it possible that the ramps can't handle the current? Is there a way to use the power supply to heat the bed with out the ramps? I have read that these MK2a heat beds can be a little bit tricky. Should I just buy a standard MK board or?
Thank , Demon
Waitaki,
Themistor does read room temps. When I tested it, it is reading 94.2 ohm, ot sure if that is good.
I do not have a heat sink on the Mosfet should I have one on it. It has not been getting hot just the fuse.
As for wire I am running 14 AWG from ramps to the heat bed. Also when I test the power on ramps D8 I'm getting 11.90 volts to a solid 12 volts. I have also checked the volts on D8 with the hot end and motors running to make sure I was not losing power, and everything was good.
I do have a fan running on the ramps, I have two fans blowing on it in two places so that the ramps is getting air across the whole board.
It does not matter aow I trun the bed on it does the same thing runs for a few sec and then shuts down, and that big fuse is very hot.
GowthamJGR
I have checked the meter and it doesn't read any ohm's when probes are together, so I'm good there.
I just tested the bed using just the power supply and it heats up, the LED comes on with no problem. Is it possible that the ramps can't handle the current? Is there a way to use the power supply to heat the bed with out the ramps? I have read that these MK2a heat beds can be a little bit tricky. Should I just buy a standard MK board or?
Thank , Demon