Boss power mystery

[Coma]

Just picked up a used Boss RV6. Will run fine on battery, will run fine on my pedal board PSU. Absolutely refuses to cooperate with the wall wart I have at home. Wall wart works just fine with every other boss pedal I've ever run with it (NS2, Metalzone, BF2 converted to 9v specs). Can't be a polarity issue, since they all have the same polarity. And wall wart puts out more than enough power (300 mA, as opposed to PSU brick putting out 250 per port).

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[GoldenVulture]

Re: Boss power mystery

There's a diode attached to the Adapter socket [ on the inside of the pedal ] that protects against a reversed polarity plug/supply. If one has been plugged in, it blows out the diode. It also stops the Adapter input working from there on.
As yours is second hand, it may have had this happen to it.

[Coma]

Re: Boss power mystery

There's a diode attached to the Adapter socket [ on the inside of the pedal ] that protects against a reversed polarity plug/supply. If one has been plugged in, it blows out the diode. It also stops the Adapter input working from there on.
As yours is second hand, it may have had this happen to it.

But then it wouldn't work with my PSU, I think?

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[GoldenVulture]

Re: Boss power mystery

But then it wouldn't work with my PSU, I think?

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Sorry , missed this.

will run fine on my pedal board PSU

Darg1911 has a good take on it.

[Darg1911]

Re: Boss power mystery

That's a digital reverb and it probably draws more current (65ma) than some of your other pedals. But not 300ma. So, I can think of a couple of possibilities. Since the RV-6 works fine with your power brick, maybe the wall wart is overrated in terms of current output capacity, or, maybe it has an issue that is limiting it's current output. So, it could still be enough to power your other pedals which draw less current but not enough to power the more power hungry RV-6. Second one is a long shot but could be a tolerance stacking thing between the plug of the wall wart and the jack on the pedal. See if it works when you jiggle the plug. But I'd lean toward the first scenario. If you have any other pedals that have a higher current demand, try the wall wart with those too and see if it works.