My new dishwasher goes bonkers randomly. How can I test if "dirty power" is the culprit?
Most likely, you have a bad ground connection in your outlet, maybe even your house. Capacitive switches are referenced to ground, so when there is no ground connection, or the ground &quot;plane&quot; has a lot of electrical noise on it, it can &quot;infect&quot; (for lack of a better word) your equipment, you get random capacitance and seemingly random functioning of the controllers looking at the capacitive switches.
Electrical noise of this type, called &quot;Common Mode noise&quot; when it is referenced to ground, is created by things like inverters, bad computer power supplies, cheap LED drivers, etc. etc.. One thing you could try is to disconnect everything electronic that you own, see if the problem goes away, then plug things back in one at a time to see if it returns. If it does, the last thing you plugged in is the culprit.
My bet: you bought some LED lamps or fixtures that had prices that were almost too good to believe. A lot of absolute crap is being spit out of factories in China that bear no approvals, no testing labels (or counterfeit ones), etc., but they can sell them on internet sites like Amazon or eBay without any consequences.