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Mosfet problem
Posted: Wed Jun 03, 2015 1:23 pm
by 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
Re: Mosfet problem
Posted: Wed Jun 03, 2015 2:42 pm
by zhangxueyou
How did you mount the mainboard to Acrylic plate?
Re: Mosfet problem
Posted: Wed Jun 03, 2015 10:13 pm
by 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
Re: Mosfet problem
Posted: Thu Jun 04, 2015 8:38 am
by zhangxueyou
What is the resistance of heat bed?
Re: Mosfet problem
Posted: Thu Jun 04, 2015 3:38 pm
by Pgioy
the resistance of heat bed is 1k, to see attachment
Re: Mosfet problem
Posted: Thu Jun 04, 2015 4:16 pm
by 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.
Re: Mosfet problem
Posted: Thu Jun 04, 2015 4:56 pm
by Pgioy
I tested with my digital multimeter and reading me the value of 1k
Re: Mosfet problem
Posted: Thu Jun 04, 2015 5:12 pm
by zhangxueyou
How did you test the resistance of hot bed?
- test hot bed resistance.png (355.08 KiB) Viewed 12446 times
- test hot bed resistance1.png (395.11 KiB) Viewed 12445 times
Re: Mosfet problem
Posted: Thu Jun 04, 2015 5:40 pm
by Pgioy
ok, I just tested as photos and the value is between 0.45 and 0.60
Re: Mosfet problem
Posted: Thu Jun 04, 2015 5:47 pm
by zhangxueyou
That's abnormal with current double.