Results 1 to 3 of 3

Thread: Guitar Amp fluctuating on certain notes

  1. #1
    New Member
    Join Date
    May 2019
    Los Angeles
    Thumbs Up/Down
    Received: 0/0
    Given: 0/0
    Rep Power

    Question Guitar Amp fluctuating on certain notes

    Recently I was experimenting and had a little too much fun with the feedback, not noticing how loud i was actually playing my amp started giving up and began fluctuating. I noticed after a couple of minutes and turned my settings down to study what had happen, now what i've noticed it works perfectly fine when turned down to about Volume 3 without any distortion; turning up the volume a little more when i hit D bass note on the 10th fret down it starts to cut in and out :( I have a Fender Deluxe 90 DSP Combo amp and a Fender 2004 Stratocaster, I've tried to wait a few days to give it a break LOL didn't do much for long as my amp began to become overwhelmed and kept cutting off on me in and out. The best way i could describe it is when you just hammer on it sounds like the note is on repeat rapidly, kinda like a psychedelic effect or pedal :confused::confused: I could post a video but I am unsure on how i can do that on here, if it's not possible I'll post it on youtube when i get home. Any questions or answers will be greatly appreciated as i am debating whether or not to save this babe or to move on over to another lover :D

    0 Not allowed! Not allowed!

  2. #2
    Old Timer olddawg's Avatar
    Join Date
    Dec 2007
    La Jolla CA, Hanalei, Kauai
    Thumbs Up/Down
    Received: 287/0
    Given: 30/1
    Rep Power
    The first thing you do with ANY DSP amp with ANY problem is do a FACTORY RESET. It should be in the owner’s manual and usually involves holding down 3 different buttons while powering the unit up. If that does not resolve the problem, since the issue occurred after high volume use with distortion.. I would suspect a damaged speaker. Try plugging in another speaker for test.

    3 Not allowed! Not allowed!

  3. #3
    Lifetime Member Enzo's Avatar
    Join Date
    May 2006
    Lansing, Michigan, USA
    Thumbs Up/Down
    Received: 1,811/7
    Given: 0/0
    Rep Power
    Some connection is loose. The physical system resonates at some note so the vibration is strongest there. It causes the connection to intermit.

    I'd use a rubber mallet - or my fist - to bang on the chassis to search. Also use a wooden chopstick to probe parts.

    0 Not allowed! Not allowed!
    Education is what you're left with after you have forgotten what you have learned.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Fluctuating waveform ~
    By Gaz in forum Theory & Design
    Replies: 22
    Last Post: 02-06-2019, 10:54 PM
  2. Home build mildly fluctuating volume faint and end-of-note distortion
    By Fred G. in forum Maintenance, Troubleshooting & Repair
    Replies: 10
    Last Post: 09-14-2018, 11:44 PM
  3. volume fluctuating
    By scole in forum Maintenance, Troubleshooting & Repair
    Replies: 6
    Last Post: 07-24-2011, 09:57 AM
  4. notes for Marshall SE100 schematic @ Blue Guitar
    By dai h. in forum Maintenance, Troubleshooting & Repair
    Replies: 4
    Last Post: 01-30-2008, 04:36 PM
  5. Plate Voltage Fluctuating
    By stokes in forum Tweed Builders
    Replies: 1
    Last Post: 09-21-2006, 11:32 PM

Tags for this Thread


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts