Hello, I have a problem, and maybe someone has encountered it, and maybe has any suggestions. I purchased a Prusa i3 mk3 used a couple of months ago and it was working fine. It had the bear upgrade and a raspberry Pi installed (with klipper mainsail, touchscreen, etc.). Recently, I was printing a large amount of pieces and after setting up a new batch, when it started to heat up, smoke and smell of burnt plastic came from the control board and extruder. For context, after disassembling it I realised the control board was replaced to the Bigtreetech SKR2. During the disassembly i did not find anything that looked burnt or damaged in anyway, so I reassembled it only to find the temperature sensors jumping around about 100-130C and Klipper immediately crashing because the heatbed temperature limit is exceeded. As I understand, the control board connections are broken. Or maybe someone has some other suggestion? I am relatively new to 3d printers and this is a little confusing to me. If indeed the control board is broken, what are some easy and budget friendly replacements I could work with replacing it. Thank you in advance.
Sounds like a bad thermistor more than a bad board. I’d start there.
The reason I think that its the board is that both temp sensors are showing wrong figures.
I missed the plural. Thought it was one. I’m not a Klipper expert (yet), but it is weird for both to go at once without the issue being the board. The SKR isn’t an expensive board if you just want to replace it, like for like. I assume you weren’t messing with the config. There is always the possibility of the thermistors being swapped on the board. That’ll give you errors on both.
I had a pinout sheet of the board so I am confident I got it right, when I'll have time I will recheck everything, and if it doesnt help i will just order a new board