Posts made by antlestxp

@dmbgo you want to be above 60 for the enclosure but not to high if printing small parts. Goal is to have the layer cool just enough to start to become solid but not enough that it shrinks. You want to avoid using the fan because that will cool to rapidly. I will usually print multiple objects when I print abs. My enclosure usually hovers around 70 degrees. Did you ever try printing 2 objects to increase your layer times?

is your bed level? looks like the nozzle is closer on one side of the print than the other. a bad first layer can make trouble for the rest of the print in abs, especially if you are printing small items with short layer times. I would try leveling the bed so the first layer looks perfect and printing 2 test cubes instead of one to give each layer enough time to cool off before the next layer hits. I forgot to ask how ridged is your carriage? is there any play or slop in any direction?

Ok guys, a conclusion. I found I was chasing 2 issues. Issue 1, yes the mosfet is bad. I removed it and tested it. It gave me no love. Like someone said b4, these usually fail hot no open. Kinda strange but oh well. Issue 2, the back up heater cart I used was also bad. A while back I had one stop working and instead of throwing it away I kept it to figure out why it wasn't working.

Thanks for the help. Truly appreciate it!

Got it. I will pull it all apart again before I continue to test.

@Phaedrux nope, I'm just an idiot. After the first fault, I reset the board at it looks like my config reverted to using e0 instead of e1... e1 still lights up, but light for e0 is still dead. It still lights up even when it faults. I will yank the thermistor and see if that gets me going.

@Phaedrux I will pull it and toss another one in. What do you think is causing the heater Leds from coming on? Heater 2 was working this morning but as of right now, nothing.

The light on the second heater is dead now.

@Phaedrux The first picture, I preheated and moved the gantry around. It seemed ok. Then I turned off the heaters and started a print. The second peak in that graph is the print starting then you can see the temperature start to drop and I get the error. I reset and tried to print again in the second printer and I get "Error: Heating fault on heater 1, temperature rising much more slowly than the expected 1.4°C/sec". Reset and try again and I get the same.

Eh it looks like I'm out of commission. I got the same fault on the second heater. I'm going to go back and look at the wiring. The thermistor seems fine, it doesn't show any spikes (I had wiring go bad before and remember seeing huge jumps in its reading). So as I sit now, both heaters will give up after a few minutes. Heater 1 does not light up at all, heater 2 will light up. I swapped out the heater cart and wires yesterday. I'm going to try and swap out the thermistor to see what that does. Open to any ideas of what else to check. Good thing I got all my orders out before it died. Must have been a Christmas miracle lol.

@bearer short celebration, just died again lol. I reset and powered it up and watched the readings until it failed. 4.888 while heating, bounces around while it holds temp as it should. Then it seems to hit zero as it tries to combat overshooting, then it gets stuck at zero and I get the fault. It never gets more than half a degree high or low. I just noticed too that the heat led never comes on while it is working. What I think I will do is just use the other heater for now and cross my fingers that it keeps working until the mini 3 comes out.

After being powered down all day yesterday. Booted it up and that heater is working again. I did try powering it down and a few reboots yesterday and it wouldn't heat. I'm going to run a print and measure when it fails again. I did test with my meter. With the heater off I caught a max of .9mv (probably from moving around), when the heater was powered on my meter read open loop then after a moment 4.88v. I want to add that the temperature is super stable right now, In the last few days I have noticed the temp swinging slightly like it was out of tune. I was actually planning on tuning it again yesterday before it gave up. It is rock steady...

@bearer ya, I can do that, tell me where and what and I will measure it. Is there a way to disable the error so I can test. I will get a fault a moment after I try and heat. No errors with M98. Here is a photo. I am on 5v right now, the printer is powered down just in case you noticed there is no vin.

I wondering if there is some sort of fuse on the heater controllers. Today my maestro is refusing to heat heater 1. When a heat command is sent I will get an error "temperature rising much more slowly than expected". The led for that heater does not light. If I change the config to use heater 2, it will heat and the light will light up. Is there anything else I should check on the board. Is this repairable? I have attached my config. I know it is probably a mess lol. But this config has been working for the last couple months. The board itself I purchased around the time it was launched. I use a fan to keep it cool at all times.

config.g

is it strange that I am eagerly looking forward to replace my perfectly functional maestro?

have you tried putting it in a container in the sun with rice?

The polymaker polylite is pretty good stuff along with the polymax. My go to is the fillamentum cpe. That stuff is fantastic but you can't leave it out too long.

I'm seeing the same issue as well. I'm running the latest fw for the controller and web control

this would be nice to see working again so I can avoid the location of the magnets I have under my PCB bed.

@Garfield I am going to see if your c0.2 works for me. I can't find any details on how it is calculated as well as the s40. Right now I left out the C and S command and only home or probe the bed at room temperature. I am also using the the temperature of the pinda as reference. I wonder if it would be best to use the bed. I was hoping to be able to get it to home with at least some heat in the bed. If I try and run another print with the bed still warm I risk the nozzle hitting the bed.