Kenmore dishwasher 587.14132101 Can hear rapid arcing as final rinse cycle completes. Definitely sounds like arcing

[WrenchRonin]

The washer only makes this sound at the end of its cycle, not during initial pump out or at any other time during the cycle. There is a faint smell of burning plastic or insulation. Any help in solving the problem would be great. Thanks in advance.

Kenmore dishwasher 587.14132101

[Vance R]

Very description indicates a loose connection in the drain circuit. Unplug the drain washer and look for burnt and/ or melted plastic. If no success at searching visually,  plug in dishwasher and start a drain cycle and look for acring. Unplug and inspect that spot. Let us know what you find so can help more. PS: picture would be great of the burnt area.

[isaac]

I would also check heater,  heater goes on during the cycle but mainly at the end for drying purposes 

[WrenchRonin]

Thanks. I will get at this tomorrow morning and report back.

[WrenchRonin]

On 1/17/2021 at 8:36 PM, isaac said:

I would also check heater,  heater goes on during the cycle but mainly at the end for drying purposes 

 

On 1/17/2021 at 2:53 PM, Vance R said:

Very description indicates a loose connection in the drain circuit. Unplug the drain washer and look for burnt and/ or melted plastic. If no success at searching visually,  plug in dishwasher and start a drain cycle and look for acring. Unplug and inspect that spot. Let us know what you find so can help more. PS: picture would be great of the burnt area.

Well, to quote just about every auto mechanic ever: Could not duplicate problem.  I sat through the entire wash and video recorded everything but ... nothing. The pump out sounded a little bit chattering but was completely unrelated to the previous noise. I will keep an ear on it and if it happens again I will get photos or video of it. Thanks again for your help.

[WrenchRonin]

Can't seem to edit previous post, but I wanted to clarify about pump-out/drain cycle noise. The chattering noise was not the same sound as the arcing noise, not that it was unrelated to pump/drain cycle.