Print suddenly 'stops' (SD) no warnings, no errors.

[neotko 1,417]

Very weird my old umo+ (1 year and 2 months) started yesterday to do this weird stuff. Printing a job file that I have print probably 50-60 times started to suddenly stop at layer 2-3-5 no warning, no error. And even more weird, the temps move to 0 (lucky me). It's like if the printer resets. But also it doesn't since the leds are still on...

I thought was an sd read error so today generated the sd files from scratch and used a brand new sd card. And again, 6 jobs failed. My newest umo+ works perfect (so lucky me I can still print). But this it's freaking me out. I need to print stuff for 2-3h (not really long jobs) and I can't keep wasting faberdashery.

I haven't move cables, or anything for a month... And I seen this behavior sometimes if I moved the ulticontroller (the cables are well in and in perfect condition). Maybe it's wires crosstalk? If so, what can I do to really isolate the cables?

I have an oscilloscope, can I use that to read the crosstalk? I should stop buying stuff that I don't know how to use...

[ultiarjan 1,223]

I have absolutely no idea, but as you have 2x the UMO+ it may be an idea to start ruling out possible sources. I think I would start with swapping the ulticontoller with the good machine.

[neotko 1,417]

Well found the problem since now I can't print.

 

Opened the board, removed the heater cables and the problem persists. Heater 2 works so I'll have to bury my dual magnetic changer hope the board doesn't choose to kill the heater 2. At least now I know the problem. /sulk /cryinacorner