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Carvin R1000 Rear Panel PCB Jacks (nuts) problem

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  • Carvin R1000 Rear Panel PCB Jacks (nuts) problem

    I'm trying to remove the rear jack pcb on this R1000, but the jack's nuts won't come off. They will get about 1/4 turn and won't go further. If you observe the 1st pic, you'll see the barrel is flatted to 2 sides. Do I need a special tool do remove the nuts? If so, where can I find one?

    I called Carvin, but their repair tech is stuck at home today and may be back Monday due to the fires out the in San Diego. Just thought I'd ask here if someone knows.
    Thanks,
    Rick

    Click image for larger version

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    Click image for larger version

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  • #2
    If the nuts are similar to ones I've seen before (cannot remember the amp) they turn 1/4 turn & then you 'pull' them off.
    Last edited by Jazz P Bass; 05-17-2014, 01:29 AM.

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    • #3
      Are they some kind of twist lock? If so, try twist 1/4 turn and pull.
      Otherwise I think someone has put glue in the threads to keep them from coming loose.

      Edit: sumulpost with JPB
      "Everything is better with a tube. I have a customer with an all-tube pacemaker. His heartbeat is steady, reassuring and dependable, not like a modern heartbeat. And if it goes wrong he can fix it himself. You can't do that with SMD." - Mick Bailey

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      • #4
        AH! I'd tried to pull the nut straight off with no luck. BUT, pulling it off at a downward angle worked!

        Thanks guys!

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        • #5
          Oh God, I hate those Carvin jacks!

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          • #6
            Those plastic nuts and body were probably stripped, perhaps overtightened by somebody, and then the nut thread start would not catch the body one.
            Ans bending them a little helped.
            Once you put the "derailed locomotive" back on its "tracks" it runs again.
            Or something like that.

            Unless you prefer the "xxx brand sucks, no matter what, because I say so" explanation

            Maybe those were 100V nuts, not meant to work in 120V USA
            Juan Manuel Fahey

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            • #7
              Here's a pic of the jack pcb removed. The jacks are Rean. Although they aren't in their current online catalog, I presume they could be called 'twist-lock' or 'threadless' jacks. Just a guess. Great idea, too. Click image for larger version

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              • #8
                I'd call it a variant of a bayonette mount, like a BNC plug.

                Someone used them on mixers, SOundcraft/Spirit maybe?
                Education is what you're left with after you have forgotten what you have learned.

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                • #9
                  I'd call it a variant of a bayonette mount, like a BNC plug.

                  Someone used them on mixers, SOundcraft/Spirit maybe?
                  Education is what you're left with after you have forgotten what you have learned.

                  Comment


                  • #10
                    Originally posted by J M Fahey View Post
                    Those plastic nuts and body were probably stripped, perhaps overtightened by somebody, and then the nut thread start would not catch the body one.
                    Ans bending them a little helped.
                    Once you put the "derailed locomotive" back on its "tracks" it runs again.
                    Or something like that.

                    Unless you prefer the "xxx brand sucks, no matter what, because I say so" explanation

                    Maybe those were 100V nuts, not meant to work in 120V USA
                    I hate the jacks, because the metal parts are press fitted, and the continuity fails.
                    Pretty UN-reliable. They don't last very long.

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                    • #11
                      Originally posted by Enzo View Post
                      I'd call it a variant of a bayonette mount, like a BNC plug.

                      Someone used them on mixers, SOundcraft/Spirit maybe?
                      Very likely, since they are British too (Rean). 'London' is imprinted on 1 side of the jack. Ha!

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                      • #12
                        You may use pcbmaking.com to get your job done effectively and affordably. Hope this will help you!
                        PCB circuit board

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