I got a new ramps 1.4 which I proceeded short while the power was on (super stupid) by touching hot iron to HBP wire pad.
Before the heat bed light(on ramps not HBP) would come on but no heating(old ramps worked until a weekish ago). Ive never had the heatbed working with this ramps.
I am getting 12v to ramps. I have tried two different power supplies no dice(500 watt 20ish amp)
The fuses resistance and voltage(12v on each side with ground) appears ok. The Mosfets have all been swapped out with new IRLB8743's. I've tried swapping out the heatbed one 3 times. I swapped out the 11amp fuse. No dice.
I bought a new 2560. No dice. D8 works fine on both boards(no ramps) with the blink sketch.
Swapped out thermisters. No dice.
Ive had all of this working in the past, just not with this ramps
The extruder heater seems to function perfectly. Ramps LED turns on and thermister registers temp.
Ramps test code flashes LEDS, Seems to be working.
Power appears to be reaching the capacitor and LED prior to the mosfet.
Oddly enough if I touch heatbed mosfet metal at the top the LED will silghtly light. Was thinking it was a loose connection but it appears now as if im conductive.
Any ideas, hints, hacks????
Ive swapped out everything except the new(ish that I shorted) Ramps. I'm at a complete loss here.
Power connections to ramps are solid.
I have to be missing something.
Before the heat bed light(on ramps not HBP) would come on but no heating(old ramps worked until a weekish ago). Ive never had the heatbed working with this ramps.
I am getting 12v to ramps. I have tried two different power supplies no dice(500 watt 20ish amp)
The fuses resistance and voltage(12v on each side with ground) appears ok. The Mosfets have all been swapped out with new IRLB8743's. I've tried swapping out the heatbed one 3 times. I swapped out the 11amp fuse. No dice.
I bought a new 2560. No dice. D8 works fine on both boards(no ramps) with the blink sketch.
Swapped out thermisters. No dice.
Ive had all of this working in the past, just not with this ramps
The extruder heater seems to function perfectly. Ramps LED turns on and thermister registers temp.
Ramps test code flashes LEDS, Seems to be working.
Power appears to be reaching the capacitor and LED prior to the mosfet.
Oddly enough if I touch heatbed mosfet metal at the top the LED will silghtly light. Was thinking it was a loose connection but it appears now as if im conductive.
Any ideas, hints, hacks????
Ive swapped out everything except the new(ish that I shorted) Ramps. I'm at a complete loss here.
Power connections to ramps are solid.
I have to be missing something.