I have a Boss BCB 30 pedal board with daisy chain. I have three pedals: TU2, CS3 and DD3. I bought an universal power supply to use with it. I have set the power supply to correct polarity and voltage. I've checked with a voltmeter and it shows 9.13 volt. It also work with each of the pedals, but not if all pedals are connect with daisy chain.

I have tested the daisy chain with my voltmeter to see if there is a connection, and there are. But if I test it with voltmeter when connect, it doesn't show any voltage.

TLDR: daisy chain doesn't deliver power, but wires are sound.

  • Is the "daisy chain" a separate cable that plugs into the power supply and then into all the pedals? If so that piece might be broken. Commented Nov 7, 2015 at 21:57
  • @ToddWilcox Yes, it's a separate cable that came with the BCB 30 pedal board. I have tested the cable with a voltmeter, and it seems to have connection if I just tests each ends of cable (female plug to each of the male plug).
    – janlindso
    Commented Nov 7, 2015 at 22:43
  • But if you plug it in, you don't see 9V at the outputs with the tester? Commented Nov 7, 2015 at 22:49
  • @ToddWilcox That's correct. Shows connection if I just test cable. Shows 0 if I test volt when plugged into power socket.
    – janlindso
    Commented Nov 7, 2015 at 22:51

1 Answer 1


Something's wrong with your daisy-chain cable. Likely the end the plugs into the power supply has the wrong plug and/or is not making contact with the power supply output.

  • May it be that I might need an original Boss adapter? This universal adapter I have fits perfectly into the daisy chain and I can change polarity to make it right, so I guess it should work?
    – janlindso
    Commented Nov 7, 2015 at 23:03
  • The fact that it doesn't work is more significant than the supposition that it should work. Commented Nov 7, 2015 at 23:09
  • You answer made me double check the daisy chain. It seems like the pin inside the daisy chain is a bit smaller than the inside of the adapter plug. Making me guess that Boss has made their adapter plug a little bit different than the universal ones. Can I just put some alumnium foil inside the plug, or would it be a bad idea?
    – janlindso
    Commented Nov 7, 2015 at 23:16
  • I can't imagine the correct cable costing that much. Using aluminum foil as a conductor is almost certainly a fire hazard. Commented Nov 7, 2015 at 23:18
  • Kinda needed a quick fix, but I'll wait for the original one. Thanks for helping out!
    – janlindso
    Commented Nov 7, 2015 at 23:31

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