Frustrated. I originally went to change my bed from thermister to thermocouple because I thought the thermister died. I did get the thermocouple to work BTW, but the teal issue is a dead print board. It takes hours to hit 100c. I tried different thermocouples, thermisters, and power supplies, checked fuses, connections, and secondary bed outputs. The voltage reads fine at 12v but the system is only pulling 0.79amps during heating. I also checked all my marlin settings and pid autotuned more times than I can count.
My only thought left is the board went bad after 10 days of printing. Just sent an email to Puncatt so we shall see what they say. Up till now, I have loved my azteeg x3 pro, so let’s hope this is an easy fix.
Anyone have any suggestions?
The latest in the diagnosis ^^^ @Joe_Spanier
@Andrew_Radovich_BadW Apparently this thing has 8 MOSFETs on board so you should have some to spare I imagine. Have you tried another one?
Also have you measured the resistance of the heatbed PCB when it’s disconnected? Too low or too high resistance would be problematic as well.
I would check the fuses on the azteeg too. It’s possible they are bad.
What heated bed? Have you checked the bed my applying main voltage to see what heat up times are without pid controls? Be careful if you do to turn it off before over heating it. It might be the pid values. I had this on my Eustathios at first. But in the end changing the pid values got me from 30minutes to 4minutes.
@Eric_Duprey I tried both bed outputs, the rest of the moffsets are for extra hot ends and such, so I guess if I could figure out how to switch the settings to use one of those instead I could try that too.
@Joe_Spanier I checked all the fuses. All are good
@Eclsnowman qubd silicone heater. I don’t think the pid settings are the issue, but I could be missing something. I’d be happy to test some recommended pid values if anyone has some.
Easy way to check. Disable pid and use bangbang. Constant voltage until its hot then turns off.
Good idea @Joe_Spanier I’ll try it tonight
Found an old heat bed and hooked it up. It works! Seems like I just need to get a new heater.
@Andrew_Radovich_BadW go with alirubber silicon heat bed on aliexpress. $25 and you can spec the size, voltage, wattage, wire length, and adhesive back or not.
i just ordered one from qubd. The same one that lasted me the couple thousand hours of print time.
That’s where qubd sources them.