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PEAVEY BANDIT PROBLEM

Discussion in 'Tech-Talk' started by Def Leotard, Oct 8, 2019.

  1. Def Leotard

    Def Leotard Strat-Talk Member

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    Hey there, I just picked up a Peavey Bandit (teal stripe) from the 90's so I could nostalgically pound away on some 80's metal riffs for old times sake. It's a fully functioning amp except for the fact that it needs to have the effects loop patched to run. Take the patch cord out and no sound. I'm sure someone has experienced this before, does anyone have any suggestions for where to start trying to diagnose the problem? I'm not super techy but I can operate a screw driver and a soldering iron like a pro.

    Thanks for any input.
     

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  2. Grux

    Grux Strat-O-Master

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    Humm, I've heard of guys using the Fx Loop to use the buffer for a lead boost but I dunno why your amp doesn't work without that loop jumped. I'm not techy either, but there are plenty of people here that are......Someone help this man!
     
  3. Triple Jim

    Triple Jim Senior Stratmaster

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    I'd guess that a contact in one of the effects loop jacks is dirty or bent or otherwise not functioning, so that the signal is not internally carried from the "send" jack to the "receive" jack when nothing is plugged in.
     
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  4. Def Leotard

    Def Leotard Strat-Talk Member

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    Thanks for weighing in Triple Jim. So I'm probably going to sound like a complete moron here but...I'm assuming the signal completes the circuit by flowing internally through the "send" and "return" jacks? I don't know much about effects loops (or amps really) but that would make sense if so. My thoughts are I could try cleaning first, then check the soldering points, replace both jacks as a last effort?
     
  5. jvin248

    jvin248 Senior Stratmaster

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    .

    Some of those Bandits needed a foot switch to use the distortion channel, which did the same thing as a patch cord in the Fx loop.

    Most play the amp on clean and feed it pedals.

    Some "Doxit" type of contact cleaner spray in the jacks would be a good thing to do just in case that is the problem.

    .
     
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  6. Def Leotard

    Def Leotard Strat-Talk Member

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    It did come with the old peavey footswitch (channel/reverb) so I'll have to try that tonight and see if it makes a difference. I was running on the gain channel last night and getting a great "George Lynch 80's tone" and I'm sure I can dial in a better tone because I only played with the setting for about 2-3 minutes, then couldn't put the guitar down. Haven't tried the clean channel but I love blues so that will probably be tonight.

    So are you suggesting spraying the contact cleaner right in the outside port of the jack or taking the chassis out and spraying on the inside ?
     
  7. Triple Jim

    Triple Jim Senior Stratmaster

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    The amp I have that has an effects loop uses a contact in the return jack to complete the circuit when nothing is plugged in. If that contact fails for some reason, then there will be no sound unless a patch cord is plugged from the send to the return jacks.
     
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  8. Def Leotard

    Def Leotard Strat-Talk Member

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    Cool, that makes sense. I'm learning !
     
  9. Def Leotard

    Def Leotard Strat-Talk Member

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    Sprayed some contact cleaner in both inputs and voila !! She totally came to life, good as new. Wow, such an easy fix, think I may just open up my own amplifier repair shop. ;)
     
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  10. Triple Jim

    Triple Jim Senior Stratmaster

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    The inputs, or the send and return jacks?
     
  11. Def Leotard

    Def Leotard Strat-Talk Member

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    sorry, yes I meant the send/return jacks.
     
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  12. Triple Jim

    Triple Jim Senior Stratmaster

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    Excellent, I'm glad the fix was easy. Happy playing!
     
  13. johnnymg

    johnnymg Most Honored Senior Member Strat-Talk Supporter

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    :p
    You are probably as qualified as most “guitar techs” and maybe even apprentice guitar luthier level. :p
     
  14. johnnymg

    johnnymg Most Honored Senior Member Strat-Talk Supporter

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    no post
     
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