Extruder Won't Heat--Upgraded to E3D (Page 2 of 4)

E3D thermistors shouldn't fail if installed/strain relieved properly. I have over 500 hours on mine.

Followed the installation instructions to a T. Not sure where the issue could be. I broke everything down last night and reassembled, still nothing.

In RH, where it shows the extruder and bed temps, it says Extruder 1: (temp) Extruder XXXXXXXX (random numbers): (temp) Bed: (temp)

Is that normal after updating the firmware?

Given the issues you've been having, that print turned out fairly OK.
It looks like you are over extruding a bit and some adjustment of the VREF of E: will take care of the Moire.
The stuttering and pausing sounds like an issue on the computer side of things.  Not much we can do to help with that.  You may want to try on a PC just to verify.

Take a deep breath and walk away for a bit.
Then take a good hard look at the connection side of things.

Look at ebay under 'e3d thermister'.  They have a screw-in one that works pretty good on the E3D v6.  I broke mine in short order - too antsy I guess.  Been using this one for a few months with no problems.  Seems to work OK.  I never did the firmware upgrade for pretty much the same reasons as you. 
As I said in another post to a similar problem, I have an IMac, but run Parallels (Windows7).  Works great.  The RH version for Mac is somewhat antiquated.  After reading so much about a firmware upgrade, I just may try it on the Windows side of the machine. 
The latest version of RH allows you to put in max extruder temp, so I wonder what does that take care of in regards to firmware upgrade........  I print mostly with PLA anyway.

Learn more every day

test the heater core by connecting it direct to an adequate 12v PSU.  If it heats up it's good.

Success! I'm not having any temp droupouts, and I'm able to finally print again!

Adjusted the VREF as well on the extruder motor, and I got rid of the moire. Recalibrated and I don't believe I'm overextruding anymore either. Thanks everyone for all the help

I am curious about the PID autotune. Is that necessary? I haven't done that yet, but I'm getting good results so far.

You just enter the new PID numbers into EEPROM within R-H.

Actually you can it just isn't as simple you have to enter the correct m code.  I'll try and find a link.

EEPROM doesn't work on Mac's via RH. Have to adjust it manually using the M92..
In manual tab; hand send the code as per
http://reprap.org/wiki/G-code#M92:_Set_ … s_per_unit
http://reprap.org/wiki/G-code#M500:_sto … _in_EEPROM
http://reprap.org/wiki/G-code#M501:_rea … rom_EEPROM
http://reprap.org/wiki/G-code#M502:_rev … ttings.22.
Results are sent to the RH log window..

Re[3]: Mac
You adjust the steps-per-mm using M92
when its right, use M500 to write it to firmware
M501 will report what is currently in firmware.
you dont need to adjust the firmware directly - just need to do M92 with the right values, and M500 to write it to EEPROM.
Same thing the eeprom dialog does, just without the pretty interface.