ChipShouter CW520 Open Coil Fault

I have a ChipShouter I recently purchased that does not seem to sense the coils as the “open” and “Fault” LED’s come on at powerup. I know the coils are fine, I tested them on another ChipShouters and they work. Any recommendations on how to proceed?


There is a known issue where the output protection resistors can fail, causing the ChipSHOUTER to report a probe open error, even when a probe is present (detailed at Has this issue been present since you got the device, or did it appear after some use?

Either way, can you shoot an email over to so that we can get a support ticket setup?




It worked for a short while but not long. Maybe a few hours? I will setup a support ticket as you’ve suggested.