Printing problem, too hot?

[Bob_du_38]

Hello

With my M200, I printed a lot of pieces. but, last week, the impression went down.

I loaded the file “Ribbon cable tester”.
The impression was catastrophic.

I took the opportunity to do a general overhaul, air filters, oil, brakes …
Cleaning and lubrication of the axes.
I changed the extruder cable, the hotend V2 with the nozzle, the perforated plate and restarted the test printing.

Better

But, during an impression I saw pieces of black plastics (burned) and, there are a lot of fine filaments. Temperature too high?

An idea of ​​where can the pb come from?

The thermocouple + heater and / or the extruder pcb board?

Some other questions.

The file “Ribbon cable tester”:
The squares are not placed as in the picture, 1 in the middle and the other 4 at each corner of the board.

On my printer / z-suite, they are placed:
1 in the middle and 4 others next to each other.
bug or normal?

How to check the correct operation of the thermocouple + heater and / or the extruder pcb board?

Thank you
Bob

[Marta]

Hey there!
The ribbon cable test is a .zproj file (from Z-SUITE 1), so when opening it in Z-SUITE 2 (default file format is .zprojx) the original models arrangement is not read by the program.
Nevertheless, your print clearly showed signs of extruder cable problem.
As stringing appeared after replacing the parts, make sure whether heater&thermocouple is properly connected to the hotend (as in this instruction).
Make sure that all cables are properly plugged to the extruder PCB as well.
If they are and the issue persists, please let me know. I’ll let you know how to check whether heater&thermocouple is working properly.

[Bob_du_38]

Hy Marta
Thank for your reply.

I follow your video, reconnected heater&thermocouple on hotend and pcb and launch a print.
I wait for result.

Bob

[Bob_du_38]

Hello

Job ended, and the issue persists.
So, can you tell me how to check heater & thermocouple.

Thank

Bob

[Marta]

Bob, I’ve sent you a PM