Can you wrap the ballast(s) with alum foil? Or is it coming in directly thru the wiring? There should be some way to filter out the noise.
Maybe attach a heavy gage wire to it (them?) and ground it real good.
Maybe attach a heavy gage wire to it (them?) and ground it real good. Maybe return for exchange if they are real bad. Call or write (email) the manufacturer and ask for advise.
Yes, a good ground is important. I am sure the manufacturer is most likely overseas, do you speak and write Mandarin lol If he can get good customer service i would try another unit after the ground is checked and there is still an issue. You should NOT have to provide your own shielding.
Fixed it for you! :wave: