Amp makes loud siren sound when turned on, even with volume at 0 and nothing plugged in

Discussion in 'Amps and Cabs' started by BryBry1234, May 28, 2016.

  1. BryBry1234

    BryBry1234 Member

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    I recently got an old Roland Super Cube 60 from kijiji and it was working pretty fine for the first 2 days, except the volume pots were super crackly. Now if I turn it on it makes a loud siren sound. I've only left it on for like a split second because it's scary and sounds like the thing's gonna explode. Anyone know what's the deal?
     
  2. Geeze

    Geeze Silver Supporting Member

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    Have you cleaned / lubed the pots yet?
     
  3. BryBry1234

    BryBry1234 Member

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    Nah. I ended up returning it.
     
  4. Phletch

    Phletch Member

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    It means you bought a stolen amp and the cops are on their way.
     
  5. hipfan

    hipfan Member

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    Maybe it wanted you to play Riding The Storm Out.
     
    Phletch likes this.
  6. randycloud

    randycloud Gold Supporting Member

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    This happened to me once a couple of months ago. We had unplugged the cords from the FX loop after having it in the studio for a LONG time without being molested. The FX loop jack didn't close correctly without the cord - sounded like Armageddon - massive and instant feedback. Called the builder and he is the one who figured it out. Emergency fix was to just run a jumper cable from FX in to FX out - didn't have the actual FX unit with me at the gig....Anyway, could be other things too, but that was a new one on me after 45 years of playing :)
     
    Killed_by_Death likes this.
  7. shredtrash

    shredtrash Supporting Member

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    Sounds like what happened to my Vibro Champ years ago. I think it was the caps if I'm not mistaken. Don't take my word for it though. I'm not an amp tech or expert by any means.
     

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