Thermistor Fail

Came back to a failed print and found that all three thermistors are reading zero. I tried wiggling and inspecting all the wires and bought a pack of new ones and plug them in and still nothing. Feels like a mainboard problem but i didnt see anything obvious on there. Any help would be appreciated.

That’s an interesting one. All thermistors are wired different ways through the SV04, therefore it seems highly likely to be a problem located on the motherboard.
According to this documentation you may want to check pins 25, 24 and 23 of your MCU (lowest 3 pins on the left side), bus tranceiver HT245 & resistor array RP9 “470” (=47Ω) on your motherboard.

Good luck
Björn

I will take a look but I used my FLIR camera and saw temps of 240+ f degrees on the main chip and some other components. Suggesting a short/damage. But weirdly it still turns on and I even updated to your 1.14 firmware.

I don’t have the skill to repair it so I bought a new board. I’ll update if that fixes it.

Just got my replacement board in from china. Took about 2 weeks to get. A bit disappointing that they don’t have an replacement for the sv04 on Amazon or another distributor in the states. But everything works fine now.

Hope this doesn’t happen again or I might have to switch to aftermarket board