Hum Problem and Power Supply Specs
robfitton last edited by
@johnchuter just to confirm, did this power supply work and resolve the hum problem? Not sure if your post is saying that it did or it should!
geoffwallage last edited by
I had the same problem and contacted Positive grid who asked a few questions then agreed to sending out an earthed power supply.
byronlovell last edited by
They are shipping the 3 pin power supplies as standard now arnt they? The two pin was causing the buzzing (in UK) I believe
pnfinn last edited by
dhbailey last edited by
@pnfinn No that would not work -- That device only outputs 12W max, which means that at 19V, the amperage is .6 (that is point-6, just over 1/2 an amp) and the Spark needs at least 2.4A (you can always use a power supply that provides more amps because the device will only use what it needs). You need something that plugs into the mains, preferably with 3 prongs for proper grounding.