Hello, I have a pro model, probably 6 years old, and the display will say switching polarity and get stuck saying that and not return to a normal running display. Can you tell me why this is happening? The machine still runs and will beep for the end of the cycle but the screen is just stuck on “switching polarity”. Is this a display issue, computer chip issue, blade function issue, etc…? Thanks for any help you can offer.
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