Mosfet problem

[Pgioy]

geeetech-official,

hello
I put everything as how to explain the manual and following the configuration website geetech wiki, but at the time of giving the temperature at the heated plate has happened this as shown in the attached picture, the integrated tends to overheat and ruin everything, what You can do?
let me know.
thanks to early

- pgioy

[zhangxueyou]

How did you mount the mainboard to Acrylic plate?

[Pgioy]

hello I just dismounted to see what has happened, I attacked on quell'innesto Heatbed as described in the manual, the problem is when I agree to give the temperature Heatbed, the MOSFET overheats the others are ok remain cool, I think that component is defective. for everything else works. hello thanks

[zhangxueyou]

What is the resistance of heat bed?

[Pgioy]

the resistance of heat bed is 1k, to see attachment

[zhangxueyou]

1k ?! That's impossible. Normally it should be 1.2 ohm. How did you test the resistance? You can test the resistance at the 2 ends of hot bed wires.

[Pgioy]

I tested with my digital multimeter and reading me the value of 1k

[zhangxueyou]

How did you test the resistance of hot bed?

test hot bed resistance.png (355.08 KiB) Viewed 12442 times

test hot bed resistance1.png (395.11 KiB) Viewed 12441 times

[Pgioy]

ok, I just tested as photos and the value is between 0.45 and 0.60

[zhangxueyou]

That's abnormal with current double.