Answered Robo3D R1 Bed wont start heating

Hello folks,

Back again with a new question. I have the filament loaded but I can't seem to get my bed to heat so it won't even print a calibration circle. (First step according to my MatterControl software.) Any advice on what to check? Planning to examine the Arduino and RAMPS board once everything cools back down... Anything else I should check? Thanks! --Barry Steenbergh

 

Removed Arduino and RAMPS. Separated them and put them back together but didn't seem to help. I get a reading of 0 degrees from the bed but the printhead starts at 16 degrees C or thereabouts. Preheating the filament works well and reaches 210 within 2 minutes I'd guess but no temp rise from the bed at all. If this still seems like a failed RAMPS board is there a place where I can order a replacement ? Thanks. --Barry

 

Yep R1. Something like this one? https://www.amazon.com/Anycubic-Pri...=ramps+1.4+shield&refinements=p_72:2661618011 Hoping to make the swap as pain free as I can... Thanks all.

 

Hi All, I actually had a few minutes today to troubleshoot further. Replaced my Ramps board with a new one and I have the exact same symptom. Bed temperature shows 0.0 degrees when I am in the Controls section of MatterControl and when I click preheat nothing happens. My filament shows a starting temperature of 16.9C or something like that. Shouldn't I see some starting temp other than 0.0C on the bed? Can anyone tell me what to look for next? All the jumpers and wires going into the Ramps board seemed ok to me. As always any assistance is much appreciated. --Barry Steenbergh

 

Ok. Can anyone point me to the thermistor?

 

Hey Everyone, I have nothing connected to my T1 or T2 jumpers on my ramps board (and I dont see anything that would connect). From googling it sounds like there should be something on T0 (filament thermistor) and T1 (bed thermistor). Also, I dont see anything that would heat my print bed. Shouldnt there be some visible heating element on the bottom of the movable print bed? Maybe my printer isnt an R1? (Bought it used but was told that was the version..) Should there be some logo on the print bed? Mine is all black...? --Barry

 

Take some detailed pictures of the rods, the bed, the insides, and the extruder and I bet the guys can tell you exactly what you have.

 

Some printer pics...

 

Hi Geof,

Hmmm... Did the beta not have a heated bed? I don't see any wires coming to/from the bed itself... The underbed is pretty reflective, but no wires (Robo3D mirrored on the bed). The only wires going to it that I see are going to the motors that move the bed (and that is working ok using MatterControl). Thanks!
Barry