Help!!! New build..

[als 0]

Hi,

I have just completed the build of my Ultimaker Original with dual extrusion... Whist awaiting the missing Bowden tube guide, I am trying to verify the machine via USB to Cura V13.12

I have updated Marlin ok (I think).. the next step to perform basic checks in Cura is not going well... Basically, the good old 'max temp' comes up, with error code1..

I have tried to cut and paste the error log details.. got them into word, with more detail, but will not paste here...

Any suggestions please? seeing a lot of different views and directions.. Thanks ..

 

[illuminarti 18]

Most likely you have bad connections to the thermocouple amplifier board on top of the print head. Make sure the connections there are all good.

 

[3dcase 37]

On mine I had to resolder the green connector where you clamp the yellow and red wire in. Was loose on the amplifier print.

 

[gr5 2,229]

The head has amplifiers for the thermocouples. Measure the voltage at the top of the head. The voltage should be equal to the temp such that

5V = 500C

0V=0C

0.200V = 20C (room temp)

If the voltages are around 200mv at the top of the print head then it's likely the wiring from there - usually the wiring right there above the print head as it gets the most stress when the head moves around.

 

[als 0]

Thanks all so much for your input..

I decided the green screw blocks were always potentially going to be a source of problem, so I have removed them and substituted pcb solder pins..

Getting exactly the same... measuring the amp output v, it is clear that the second extruder head is causing a problem. I have simply unplugged this from the main board.

Bingo.. I have a new friend...

I am sure of connections, etc. Is it worthwhile reversing the red and yellow leads on this second probe?. Apart from that, I guess substitution would prove if the second probe is duff... hopefully there will be some brighter ideas out there..

Well done, and thank you all.