Hi,
My treadmill have MC2100ELS controller board, about a month ago its keep blowing fuse. After checking I found IGBT (G4PC40K) was shorted. I replace IGBT, when I start treadmill was working fine without load, but once I put load on it IGBT short again and blow fuse gain.

Any idea / suggestion?
Is it worth time and effort? What are the chances? Or just buy new controller board?
What is simple cheapest DC motor speed controller I can use in this scenario?

 

For the treadmill, the board is a dedicated unit, so subbing it is pretty much out.
I would check any causes of friction, belt etc.
Max.

 

Thanks Max,
Belt friction looks OK to me, is it possible that some other component also damage with IGBT which I didn't replace?

 

I don't have the reverse engineered schematic for the IGBT version, just the Mosfet one.
Max.

 

Just out of interest, have you checked the electrolytic capacitors?
As they go low value, and high ESR, the switching spikes can run riot and pop all sorts of things.
When in doubt, replace them.

 

Hi I have one of this board(mc2100els) the igbt driver is damaged & I don't know what is it. Can any one help me???

 

Hi it is photo of the driver

 

Hi it is photo of the driver

Photo?
Max.

 

For anyone else looking for the driver IC of the IGBT version of the controller, on my MC2100ELS it is an IR S2127 in an 8 pin SOIC package.

https://www.scribd.com/doc/312716459/S2127

 

How would one go about troubleshooting this component (IR S2127) on this board? My board keeps burning the IGBT when load increases despite the large capacitors seeming to be fine and using a replacement motor, so I suspect there is a problem with this current driver chip. Perhaps it is the case that when this part fails then the IGBT will not work at all?

 

How would one go about troubleshooting this component (IR S2127) on this board? My board keeps burning the IGBT when load increases despite the large capacitors seeming to be fine and using a replacement motor, so I suspect there is a problem with this current driver chip. Perhaps it is the case that when this part fails then the IGBT will not work at all?

hey bro.did you fix your board ? have the same problem