Quote from: Happyorange27 on November 30, 2016, 07:42:15 PM
Try to actually reduce all these independent power sources. If you had just one spot with one common ground, you should have less noise. You might have too many ground potentials right now. Also what other electro magnetic interference could be near by like flourecent lights or old wiring in the walls. Environment matters. Check your wall power and polarity.