Hi,

I am new here,
I found this IGBT .....G4PC40K, fully shorted in this PCB.... MC2100ELS-18W
Dont have any like it...can I replace with:

K50T60 https://www.infineon.com/dgdl/Infin...N.pdf?fileId=db3a304412b407950112b4288ce93e21
RJH60F7 https://pdf1.alldatasheet.com/datasheet-pdf/view/313725/RENESAS/RJH60F7ADPK.html
H20R1202 https://datasheetspdf.com/pdf-file/683553/InfineonTechnologies/H20R1202/1

All of them have one internal diode, that the G4PC40K doesnt have.... All the above I have with me.
Should I stick with the original, or there is some replacement.

Best regards
Nezocas

 

Go with the highest rated one, not much to lose by trying it.
Looks like they should work to me.

 

Ok, Will try that..... the internal diode on them wont afect anything...???
I have tested the motor with 12vdc UPS battery connected to my Fluke, and is drawing 0.7Amps with belt OFF the motor, no carbon sparks or any bad noise from the motor.
This treadmill was repaired yesterday with a faulty control board. It had corrosion between the carbon traces, on the 3 flex cables that go to the user control buttons. It could not be started in any way, because of the corrosion. After all that was cleanned it started normally, and was left running alone for 1 hour.
Maybe that overheated the motor controller and fried the IGBT.

 

If the motor was running off load it should run for hrs with no appreciable heating, i.e. very low current.
The diode should have no effect as far as i can see.
There is also one across the motor, in most of the MC2100 boards.