A20M not wanting to heat up the hotend

[jokerjuice01]

Hi guys new here

I am having issues with my A20M I want to like it but at the moment its more or less an expensive paper weight ..

Now everything works... steppers on X,Y,Z hell even the heatbed works ....

But the hotend doesnt want to heat up
It shows the 245 degrees I want to get to .... but the realtime is bouncing at -13 -14.... and doesn't heat it up.

as I said ... I would of assumed that it may of been a board issue ,, but the heatbed works.... is it worth updating firmware or championing something else aka the heat element or a thermister near the hot end..

[William]

Hi，maybe you can test the motherboard voltage and test the thermistor resistance.

[jokerjuice01]

So I obviously need a multimeter.. but where should I be probing go get those from..

this is really annoying because everything else works, heatbed, steppers and what not, its just this one thing ... are there onlt 3 leds that are meant to illuminate.. and are they meant to be red?

[William]

yeah, if the printer works well, it needs the motherboard lighting.

[jokerjuice01]

Yeah there are 3 red .... two going near the input power ..and the third near the centrer of the board ..

But there is one that briefly flashes on in the middle..is that normal.