Homing XYZ

Hello, I recently restarted and reset my SV05 and it asked me to Home XYZ, when i do, the sensor on the Z axis starts flashing red. and then the display shows Homing Stopped. and when i try to print something, the timer just starts going and the Z axis on the display is showing a “??”

i honestly am in a loss of words, because it was running perfectly yesterday, i dont know what changed since then.

I’m not at all familiar with the SV05 but looking at the Marlin source code there are 2 sensors involved with the Z axis homing.

1 - A switch that is triggered when the bed is fully lowered.
2 - The probe that sets the precise Z offset to the nozzle tip.

When you command the printer to HOME XYZ does the bed move all the way down?

when i do auto Home, It says “Endstops P”.

also i noticed that the probe sensor would get stuck and a strobe red light.

and when i try to print something, its very slow to heat up, and when it does, it just does the auto Home and doesnt movve from there, untill the timer starts to run, and it goes into cooldown.

I dont know much about 3d printers, but i do know that its not right..