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  1. #1

    Fender Deluxe Reverb '68 reissue problems (howling noise)

    Hi all. I've had this problem with my Fender Reverb Deluxe 68 reissue, which
    I'll try to describe to the best of my ability.
    This happens intermittently once the amp warms up and also keeps getting louder
    and quieter intermittently. It's a static kind of noise which does not depend on the volume knob
    (sounds like when wind blows into a microphone) and sometimes
    the sound of the guitar degrades noticeable. Note that if I hit the amp with
    hand, the problem sometimes stops and all is good again.
    The problem seems to have to do with the second/vintage channel. If I pull V2 tube
    (and leave the V1 in), the problem never comes back (while I play on channel 1 obviously), which
    makes me rule out the channel 1 circuit and the power stage (is the power stage shared among
    the two channels?)
    So far I've tried swapping all tubes, but the problem persists.
    A reliable way to reproduce the problem is to pull the guitar cable in and out
    of the amp slowly, this triggers pops in the input which likely aggravates the problem.


    As the next step in my troubleshooting, I am considering taking apart the amp
    and reflowing all solder joints to make sure I don't have a cold
    solder joint.
    Also, what may be some of the components that could be causing similar issues? I
    can try replacing them preemptively.


    The amp is still under warranty, so I'd like not to void it with anything that I
    do as it can be my last resort to fix it. (but I'd rather fix it myself)


    Thank you

  2. #2
    Les Paul Forum Member sonar's Avatar
    Join Date
    Jan 2003
    Posts
    3,523

    Re: Fender Deluxe Reverb '68 reissue problems (howling noise)

    Quote Originally Posted by workleg View Post
    The amp is still under warranty, so I'd like not to void it with anything that I
    do as it can be my last resort to fix it.
    There you go.

    Take advantage of the warranty while you have it.

  3. #3
    Les Paul Forum Member J T's Avatar
    Join Date
    Oct 2005
    Location
    NYC
    Posts
    9,872

    Re: Fender Deluxe Reverb '68 reissue problems (howling noise)

    Agreed. Leave it alone. Just bring it back. If they can't fix it, ask for another one.
    The farther you go, the closer you are.

  4. #4
    Les Paul Forum Member TM1's Avatar
    Join Date
    Jun 2003
    Location
    on the middle & bridge pickup of my L.P. Custom
    Posts
    7,746

    Re: Fender Deluxe Reverb '68 reissue problems (howling noise)

    If it's under warranty take it back. Most likely the amp has a bad cap in the signal path or an issue in the Reverb circuit. Try unplugging the Reverb cables and see if that fixes it.
    Such a shame as all the parts and transformers are all Chinese made so it's a guess as to which actual part is the issue.. I could tell you if it was in my shop..

  5. #5

    Re: Fender Deluxe Reverb '68 reissue problems (howling noise)

    I concur on checking the reverb cables. I had a similar issue with my 65 RI. The ground "ears" on the RCA cable to the reverb tank were spread too wide and not making contact. All good after bending them inward slightly.

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