Guys, I’m experiencing a strange heatbed temperature graph on my Creality K2.
The temperature plot looks very noisy and unstable, with constant fluctuations instead of holding steady.
Has anyone experienced a similar issue?
I’m starting to suspect the heatbed might need replacement, but I’d really appreciate any advice or suggestions before taking that step.
Thanks in advance 
Just wondering if it does that at higher temps also like 60°C. What are you printing using a bed temp of 45°C ?
That screenshot was after PID tuning of the BED,And yes at the higher temperature it behaves like this, seams it’s very noisy, in the screen it was not stable at all always it goes 5 to 7 degrees higher than the set temperature, Ex when i set it to 50 Degrees then it’s stop on 58 or 60 degrees.