Forum Top Banner Ad

Collapse

Ebay Classic organs

Collapse

Announcement

Collapse
No announcement yet.

Hissing & smoke at power cord area.

Collapse
This topic is closed.
X
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • Hissing & smoke at power cord area.

    Hello,
    We have a problem with our church organ. There is a hissing sound and smoke coming from around the power cord area. Any ideas on what the problem is?
    Thank you.

  • #2
    What model Hammond Organ is it?

    If it's an A-100 series Hammond, my guess would be one in the A-100 series and that the internal power amp has had a coupling cap failure causing tubes to run away and burn up a cathode resistor. But that's just a guess.
    I'm David. 'Dave' is someone else's name.

    Comment


    • #3
      Originally posted by David Anderson View Post
      What model Hammond Organ is it?

      If it's an A-100 series Hammond, my guess would be one in the A-100 series and that the internal power amp has had a coupling cap failure causing tubes to run away and burn up a cathode resistor. But that's just a guess.
      Or it could just be a loose connection with an old cord arcing.

      Geo

      Comment


      • #4
        Electrolytic capacitors also can fail in a rather "dramatic" way that can involve a lot of hissing and white smoke, with their aluminum cans sometimes forcefully ejecting their contents 8) Not really a terrible thing to deal with repair-wise, but it certainly can be an attention getter!
        Tom in Tulsa

        Fooling with: 1969 E100, 1955 M3, 1963 M100, Leslie 720

        Comment


        • #5
          Originally posted by tpappano View Post
          Electrolytic capacitors also can fail in a rather "dramatic" way that can involve a lot of hissing and white smoke, with their aluminum cans sometimes forcefully ejecting their contents 8) Not really a terrible thing to deal with repair-wise, but it certainly can be an attention getter!
          And a bit messy. I had a Dynaco MkIII power amp blow its filter can right in front of me on the bench. I had time to flip the power off and run out of the room as greenish smoke billowed out.
          I'm David. 'Dave' is someone else's name.

          Comment


          • #6
            Yeah, that's the stuff! 8)
            Tom in Tulsa

            Fooling with: 1969 E100, 1955 M3, 1963 M100, Leslie 720

            Comment


            • #7
              If the smoke is black it comes from something burning in the vatican.
              If the smoke is is white, Hurray you got a new pope.

              Comment


              • #8
                Time for a tech to do a 50 yr service!
                Hammond C3, M102, H112, XB3, XB5, X5, TTR-100
                Lowrey Heritage DSO-1, Yamaha E70
                Farfisa Compact Duo Mk2, Vox Continental 300, Gibson G201, Korg BX3 Mk1
                Leslie 122 x2, 145 x2, 910
                www.drawbardave.co.uk

                Comment


                • #9
                  Originally posted by Drawbar Dave View Post
                  Time for a tech to do a 50 yr service!
                  That's good! There aren't many products in use out there that one could recommend a '50 year' service for 8) John Deere Model "B" perhaps?
                  Tom in Tulsa

                  Fooling with: 1969 E100, 1955 M3, 1963 M100, Leslie 720

                  Comment


                  • #10
                    What model Hammond Organ is it? It's an E-143.

                    Comment


                    • #11
                      You could have arcing from one tube pin to the other. This happened to me on an old Silvertone amp and the fix was as simple as replacing the tube socket.

                      Comment

                      Working...
                      X