MPS Road series power board hum help?

[Squee44]

Hi, new to the thread, hoping to get some help and join the community!

Recently I bought a MPS road series powered pedal board, and whenever I plug my pedals into the built-in power source, I get a horrible hum. I systematically checked each of my pedals, and I can rule out saying that it's my pedals. Also checked all of my pedals linked together on just batteries and had no hum until I plugged them into the power source from the pedal board. The hum oddly enough can be turned down if I turn down the "low" volume control on my amp, though that does kill the sound quality, along with the hum is still there, just muted slightly.

Any help would be appreciated, and sorry for the long post!

[RickenBoogie]

If you bought the board new, take it back. Sounds like a faulty power supply.

[gastric]

Potentially a ground loop as the MPS isn't an isolated power supply. You'll need a process of elimination to determine which pedal(s) in the chain is generating the issue and maybe run that pedal off it's own separate power supply. One by one add your pedals back into your signal chain while powered from the MPS. Eventually you'll find the one that's causing the issue. Remove it from the chain, continue adding the remaining pedals. Hopefully it's just one pedal.

If I recall correctly the MPS has at least one regular outlet provided underneath so it's totally easy to mount a regular power strip under the pedals for powering those that can't run off the MPS directly due to ground hum, non-9V power requirements, whatever.