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Author Topic: Kenmore Dishwasher RFI, Maytag Washer RFI  (Read 17331 times)
KD0REQ
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Posts: 1050




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« Reply #15 on: October 31, 2013, 10:10:16 AM »

the "guts" side of a dishwasher, outside the little minibox that holds the line splices, is way open and easy to clamp some ferrites onto the wires.  think common-mode noise, clamp over them all.  danger, warning, fattening, etc. department:  120v on Faston terminals, pull the breaker first.

for displays, ought to be possible to drop power, have lunch so the charges dissipate on the PCBs, then put a metal screen between the plexiglass plate and the display board, with some insulation between it and the electrothingies.  that Faraday shield should help some.

dishwasher boards are a challenge, as removing the access door with the breaker off exposes a seal that keeps water out.  on some brands, the seal is marginal to begin with; if you do some fancy Googling along the lines of "Lileks + Electrolux" you will find the seal gasket came off the factory not quite sealing to start with.  on a stainless-steel tub machine, I would not fool with them, should be shielded well enough.
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