Rostock Max V2 Hot End Heating Slow/Limited

[connorg]

I've been having a problem with the hot end on my V2 (stock parts, Mattercontrol software). The temperature rises more slowly than usual, and when I heat it up to ABS printing temperature (228), it can't make it over 200. When I tried a PID autotune, I got a timeout error. The thermistor seems to be functioning properly, as the filament started to melt about where I would expect and it reads room temperature correctly. When I measured the resistance across the resistors, I got 9.4 Ohms if I'm reading my DMM correctly. Is it a problem with the resistors?
Additionally, below are the EEPROM values from the terminal (the other problem I can think of is that the drive max is set too low, but the settings worked fine before).
Any advice is appreciated!
Thanks,
Connor

EPR:2 75 250000 Baudrate
<-
<-EPR:3 129 895.396 Filament printed [m]
<-
<-EPR:2 125 941086 Printer active
<-
<-EPR:2 79 1800000 Max. inactive time [ms,0=off]
<-
<-EPR:2 83 0 Stop stepper after inactivity [ms,0=off]
<-
<-EPR:3 11 80.0000 Steps per mm
<-
<-EPR:3 23 300.000 Max. feedrate [mm/s]
<-
<-EPR:3 35 120.000 Homing feedrate [mm/s]
<-
<-EPR:3 39 35.000 Max. jerk [mm/s]
<-
<-EPR:3 133 0.000 X home pos [mm]
<-
->M105

<-EPR:3 137 0.000 Y home pos [mm]
<-
<-EPR:3 141 0.000 Z home pos [mm]
<-
<-EPR:3 145 250.000 X max length [mm]
<-
<-EPR:3 149 250.000 Y max length [mm]
<-
<-EPR:3 153 376.210 Z max length [mm]
<-
<-EPR:3 59 1850.000 Acceleration [mm/s^2]
<-
<-EPR:3 71 3000.000 Travel acceleration [mm/s^2]
<-
<-EPR:3 881 290.800 Diagonal rod length [mm]
<-
<-EPR:3 885 144.000 Horizontal radius [mm]
<-
<-EPR:1 891 80 Segments/s for travel
<-
<-EPR:1 889 225 Segments/s for printing
<-
<-EPR:1 893 0 Tower X endstop offset [steps]
<-
<-EPR:1 895 0 Tower Y endstop offset [steps]
<-
<-EPR:1 897 0 Tower Z endstop offset [steps]
<-
<-EPR:3 901 210.000 Alpha A(210):
<-
<-EPR:3 905 330.000 Alpha B(330):
<-
<-EPR:3 909 90.000 Alpha C(90):
<-
<-EPR:3 913 0.000 Delta Radius A(0):
<-
<-EPR:3 917 0.000 Delta Radius B(0):
<-
<-EPR:3 921 0.000 Delta Radius C(0):
<-
<-EPR:3 808 39.910 Z-probe height
<-
<-EPR:3 812 2.000 Z-probe speed
<-
<-EPR:3 840 150.000 Z-probe x-y-speed
<-
<-EPR:3 800 0.000 Z-probe offset x
<-
<-EPR:3 804 0.000 Z-probe offset y
<-
<-EPR:3 816 100.000 Z-probe X1
<-
<-EPR:3 820 20.000 Z-probe Y1
<-
<-EPR:3 824 160.000 Z-probe X2
<-
<-EPR:3 828 170.000 Z-probe Y2
<-
<-EPR:3 832 20.000 Z-probe X3
<-
<-EPR:3 836 170.000 Z-probe Y3
<-
<-EPR:0 880 0 Autolevel active (1/0)
<-
<-EPR:0 106 1 Bed Heat Manager [0-3]
<-
<-EPR:0 107 200 Bed PID drive max
<-
<-EPR:0 124 80 Bed PID drive min
<-
<-EPR:3 108 87.860 Bed PID P-gain
<-
<-EPR:3 112 3.010 Bed PID I-gain
<-
<-EPR:3 116 641.820 Bed PID D-gain
<-
<-EPR:0 120 200 Bed PID max value [0-255]
<-
<-EPR:3 200 91.000 Extr.1 steps per mm
<-
<-EPR:3 204 100.000 Extr.1 max. feedrate [mm/s]
<-
<-EPR:3 208 45.000 Extr.1 start feedrate [mm/s]
<-
<-EPR:3 212 6500.000 Extr.1 acceleration [mm/s^2]
<-
<-EPR:0 216 1 Extr.1 heat manager [0-3]
<-
<-EPR:0 217 205 Extr.1 PID drive max
<-
<-EPR:0 245 60 Extr.1 PID drive min
<-
<-EPR:3 218 17.0030 Extr.1 PID P-gain/dead-time
<-
<-EPR:3 222 1.1933 Extr.1 PID I-gain
<-
<-EPR:3 226 61.2967 Extr.1 PID D-gain
<-
<-EPR:0 230 255 Extr.1 PID max value [0-255]
<-
<-EPR:2 231 0 Extr.1 X-offset [steps]
<-
<-EPR:2 235 0 Extr.1 Y-offset [steps]
<-
<-EPR:1 239 3 Extr.1 temp. stabilize time
<-
<-EPR:1 250 150 Extr.1 temp. for retraction when heating [C]
<-
<-EPR:1 252 0 Extr.1 distance to retract when heating [mm]
<-
<-EPR:0 254 255 Extr.1 extruder cooler speed [0-255]
<-
<-EPR:3 246 0.000 Extr.1 advance L [0=off]

[Xenocrates]

I've been having a problem with the hot end on my V2 (stock parts, Mattercontrol software). The temperature rises more slowly than usual, and when I heat it up to ABS printing temperature (228), it can't make it over 200. When I tried a PID autotune, I got a timeout error. The thermistor seems to be functioning properly, as the filament started to melt about where I would expect and it reads room temperature correctly. When I measured the resistance across the resistors, I got 9.4 Ohms if I'm reading my DMM correctly. Is it a problem with the resistors?
Additionally, below are the EEPROM values from the terminal (the other problem I can think of is that the drive max is set too low, but the settings worked fine before).

Yep. It's the resistors. In theory, Seeme uses 6.8 Ohm resistors. These vary somewhat, especially with how they get abused. In this case, one has failed completely (Open path), and another is increasing in resistance. This causes a greatly reduced power delivery. So they need replaced, either like for like or with a heater cartridge (See Geneb's video, multiple threads for instructions or other upgrade ideas).

[connorg]

Thanks for the reply, I'll check it out.

[connorg]

Xenocrates,
Do you think it would be worth it to upgrade the hot end entirely? I've had my printer for a while and am looking to upgrade at least one part. Any suggestions as to which hot end would be a good pick? I've been eyeing an E3D v6.

[Xenocrates]

Xenocrates,
Do you think it would be worth it to upgrade the hot end entirely? I've had my printer for a while and am looking to upgrade at least one part. Any suggestions as to which hot end would be a good pick? I've been eyeing an E3D v6.

It could be. I use a v6 with a pt100, but that's not the simplest mod. There are a lot of use cases. If you use pla and abs a lot, stick with the stock end. Pla only, a j-head might be an improvement. Abs and higher temp plastics, v6 or Prometheus are good choices

[connorg]

Thanks, I'll probably go for the v6; I print almost exclusively in ABS right now (well, until the resistors busted) and want to try out some higher-temp plastics.