Hey,
I’ve been enduring this ebay printer for quite some time now (6 months). Whilst it’s been a good learning curve and I am an electronics tech by trade, so rebuilding things is fine, I am becoming frustrated with it.
Recently, during prints (at random points), I will have a message on the screen that says “Tool 0 temperature failure. Check wiring”
After some searching, it pointed to the thermocouple and I purchased some replacements from ebay. I also purchased a new heating element so as to replace everything on the extruder head. One test suggested checking the continuity of the thermocouple. The old one was open circuit and the new one had 10 ohms/near short on it. I installled this and fired it up. All was working and heating/reading really well.
Until about 2 hours into a fresh print and the same message occurred. It also smelt like the PLA was becoming way too hot (obviously because the system couldn’t read the temperature).
I found a reddit thread that said to check continuity from the terminal block to the extruder block. That the thermocouple shouldn’t short to the extruder head. My new one does. I did a continuity on the 4 thermocouples I purchased, and they all show continuity from the leads to the screw lug where you are to screw it down. What am I missing?
The CTC Replicator Dual has a screw and washer to screw the lug directly onto the block, so I’m not entirely sure how I can isolate the thermocouple from the block?
I am running Sailfish 7.7 from memory.
I’ve had no end of trouble with this printer (and it’s my first dip into 3D printing). I’ve replaced all the axis guides, replaced the temp sensor on the heated bed, constantly having to re-level the bed… I’ve replaced the extruder tubes twice and ends. Some days I wish I could load an STL and it just bloody prints. Even at layer height 0.15 it prints out really poorly.
But having said that, least I have a 3D printer and I want to get it working. It won’t beat me yet… So any info on what I can do now to get the temperature working would be great.
Thanks
Damien
