Geeetech

I have re installed the original. Same results. Is there any way to modify the firmware? I still believe this is a problem of settings.

No solder bridges or bad contacts on any of the pins on the board that I could see. There seems to be 3.3V between the two pins of the thermistor connector.

Displays 128 when shorted. 74 when open.

It starts at 70 something but as the hotend gets hot, the temperature does rise. Also: this is the second thermo resistor. My guess is that the thermo resistor is working, but the firmware does not have the correct beta.

It does not reach the 200 directly connected to the PSU.

I noticed the initial readings for the hot end temperature is also wrong. This is before anything is heated up, it reads 74 while the hot bed reads 16. The value does change, so I suspect it may not be a connection problem.

I tried only heating up the hot end by it self. Same results.
I re adjusted the thermo resistor. Same results.
I changed the thermo resistor with a Semitec 104GT2 (Beta value 4267K.) Same results but I have not reconfigured the firmware as I don't know how to do it on the STM32 / GTM32 control ...

Hi Mark. It`s a Geeetech Prusa I3 M201 3D printer.

Cartridge resistance is at 14.7 Ohms yet it is supposed to be about 3.6 Ohms.

Heat Bed resistance is at 3.4 ohms. The article mentions that the resistance of the hotbed ranges from 1-2ohms.

Power supply is 24V, outputs 24,38V when it is "Preset ...

Hello. My hot end will not go heat up more than 143 degrees. I suspect the PSU is failing to deliver the amps needed. Hot end LED on motherboard is lit and the temperature does rise but will not go higher than 143. Also: heat bed will not maintain a constant of 95. Hot bed temperature will oscillate ...