Bugera 1960 Motorboating Problem

Discussion in 'Other Amps' started by andomando, Apr 21, 2019.

  1. andomando

    andomando New Member

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    My bugera 1960 infinium amp is motorboating,when i switch it on it does it till it warms up then its fine,,,but it has started doing it about an hour into a gig,so i had to change amps,
    Does anyone have any idea what may be causing it to have this problem
    any help would be appreciated.
     
  2. ampmadscientist

    ampmadscientist Well-Known Member

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    Ask Shane Sipe your resident Expert Bugera Dude:
    http://www.marshallforum.com/members/shane-sipe.46869/
     
    Last edited: Apr 21, 2019
  3. charveldan

    charveldan Well-Known Member

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    [​IMG]

    Because its a Boogera.
     
  4. ampmadscientist

    ampmadscientist Well-Known Member

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    That does appear painful...
     
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  5. Buzzard

    Buzzard Well-Known Member

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    Best solution. Drop it off the back of a motorboat.
     
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  6. RLW59

    RLW59 Well-Known Member

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    Tough crowd...

    In a new build, motorboating can be due to lead dress causing parasitic oscillation.

    But in an amp that was previously working correctly, it's usually due to an electrolytic cap that's drying out and going bad.
    -------------------------
    I'm guessing that if "electrolytic cap" didn't pop into your mind the first time you heard it motorboating, you may not want to work on the amp's guts yourself. And you were wondering if there's some easy fix or if it's time to put it in the shop.

    Time for a tech to look at it. Simple, common repair, not super expensive.

    Some electrolytics last amazingly long, but replacing them is considered "normal tube amp maintenance".
     
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  7. charveldan

    charveldan Well-Known Member

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    They're like $150 used. Just buy another.
     
  8. andomando

    andomando New Member

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    Thank you for your help, I have heard of older amps with this condition and needing electrolytic caps renewed but did not think an amp as old as mine would need new caps,I will check the caps out, thank you again..and as for the jokers,,just shows their knowledge,or lack of it.
     
  9. Garrett

    Garrett Well-Known Member

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    Well, Bugera got the reputation due to a poor connector choice for the power section, thus the fire jokes.

    I have a 333XL and the amp sounds great. Hope you get it sorted out and please update the thread when fixed.
     
  10. Adieu

    Adieu Well-Known Member

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    How does that guy manage TWO poles???

    Or did the first small one jam his rudder and unexpectedly put him into #2?
     
  11. anitoli

    anitoli Well-Known Member

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    That is natural selection in it's finest hour. Target fixation. This is what killls newbies on motorcycles.
     
  12. ampmadscientist

    ampmadscientist Well-Known Member

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    It won't be too unusual for a voltage regulator to fail from overheating, as Bugera tends to have poor thermal management for the solid state components. (particularly the voltage regulators).
    Cap failure is a distinct possibility.
    Did you try messaging Shane?
    http://www.marshallforum.com/members/shane-sipe.46869/
    Send him a private message.

    I found that if I installed heat sinks on the voltage regulators, etc...the amp would keep working pretty good and sounds good.

    "...They're like $150 used. Just buy another...."

    :lol::lol::lol: Well, there's that.

    We tried getting any help or service / parts from "Music Group," there is no customer service or parts support that we could find, even from the service centers.
    Too bad because the amps do have potential.
    After I fixed it, it sounded pretty damn good. But I fixed it with no help from Bugera.
     
    Last edited: Apr 22, 2019
    JohnnyN likes this.
  13. ampmadscientist

    ampmadscientist Well-Known Member

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  14. JohnnyN

    JohnnyN Member

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    I did that on a V55 head (pre Infinium) and it worked fine for the rest of the time I had it :)
     

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