Bugera 1990 Infinium doing some odd things.

  1. #1 by John Culpepper on 03-21-2018
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    Bugera 1990 Infinium doing some odd things.

    Hello. I have a newer 1990, less than a year old. I love this thing it sounds amazing. However, every so often during play time at full band practice levels. (Clean channel volume 5 gain 5 / Dirty Channel Volume 4.5 to 5 Gain 12 o clock, so 11 out of 22 on the knob) I experience something strange. One or more of the valve indicators on the back will light up, stay lit and the channel selector switch will blink slowly maybe one strobe per second. During this there is a small drop in volume but not tone. If I turn the amp off then back on it will act as normal again. At first I thought it was a defect, I contacted Bugera, but eventually decided not to send in in favor of getting a new set of power tubes since I had heard mixed reviews of the stock tubes. I replaced the tubes with new ones. The amp is actually a lot louder now. I assume I got a bad factory set, but, although much less frequent it will still do as described above. Is this something that other users of this amp have experienced? Or did I get an oddball?
  2. #2 by Daniel Soto on 03-22-2018
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    pardon me but..

    I know this isn't really much help, but I too Love my 1990!! I wanted to ask which brand tube did you decide on. Thanks!
    Good luck, as I have yet to run my 1990 at band volume so no issues here yet, Thanks.
    Live I'm still with my 1960. Another Beast!!
    Someone here told me once that the fuse can be serviced by ourselves. Worth having the spares around anyway after you try that. (seems like a power dip somewhere. The tubes were just a casualty)
    Again sorry to be not much help.
    Dan

    Bugera 1960 and 1990 Infinium
  3. #3 by John Culpepper on 04-03-2018
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    I used these

    I installed Mullard EL34s they made a huge improvement in overall volume and tone to some extent. The gain saturation seems way better as well.
  4. #4 by Joseph Hamer on 05-02-2018
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    Dude i just posted the same issue. Did you have any luck? In my apartment i can only really turn it up to about 1. The first time i cranked it up past 3 ive have the same issue. I can play for about 20 minutes and then the v1 and v2 tube lights come on, the volume drops and the channel light flashes. I turn it off and back on and its fine for a little. I think there is some kind of overheating issue cuz it seems fine when im playing at very low volumes. I threw in a set of kt77's just to see if it was the tubes and it is still doing it. Bugera support is sending me new tubes but I know it isnt the tubes. Wtf?
  5. #5 by John Culpepper on 3 Weeks Ago
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    Today

    It did not help it still does it. I then replaced the tubes with the Bugera Set new ones no effect. Today during practice it powered down and will not turn back on at all zero power I will check the fuse soon. I really hope someone at Bugera has some answers as this is getting very frustrating.
  6. #6 by Michael Lapke on 3 Weeks Ago
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    - John Culpepper wrote View Post
    It did not help it still does it. I then replaced the tubes with the Bugera Set new ones no effect. Today during practice it powered down and will not turn back on at all zero power I will check the fuse soon. I really hope someone at Bugera has some answers as this is getting very frustrating.
    Hi John,

    Sorry to hear you are still experiencing problems.

    According to our CARE techs:

    Usually blinking on the front lights means two or more tubes are failing and the amp cannot continue to be played. If two or more tubes are going bad, they may be fine at lower volume. But then when cranked up won't be able to handle operating with that many bad tubes and you should get two or more Infinium LEDs on the back light up. When this happens sound should cut out completely and the front LED blinks to let you know.
    So they suggest that the best thing to try is resetting your amp's power, which will reset the Infinium boot/bias process. When the LED on the front starts blinking again, look on the back and see which Infinium tube LEDs are lit up and take note. Then power down the amp and try swapping those two tubes with the two that are not lit. Repeat. Do the red LEDs on the back follow the two tubes or do they stay in the same location?

    Michael Lapke
    Specialist, Community
    MUSIC Tribe
    BEHRINGER
  7. #7 by John Culpepper on 3 Weeks Ago
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    Hello, Michael.

    So I知 quite certain that the fuse blew in the back I知 waiting on new ones to come in but, last I played it, it would do as you suggested, though after power cycling it, waiting a few minutes then turning it back on it would return to normal, then after a few minutes of playing I壇 see the lights flashing wildly again while playing, the ones in the back. Sometimes the channel iddicatpr will flash but there is only a barely noticeable drop in volume, and usually there is only one light that remains lit, I chalked it up to being a quirk but if it is blowing fuses while connected to a power conditioner with surge suppressor I知 thinking something may be wrong.
  8. #8 by Michael Lapke on 3 Weeks Ago
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    Posts: 1,700
    - John Culpepper wrote View Post
    So I知 quite certain that the fuse blew in the back I知 waiting on new ones to come in but, last I played it, it would do as you suggested, though after power cycling it, waiting a few minutes then turning it back on it would return to normal, then after a few minutes of playing I壇 see the lights flashing wildly again while playing, the ones in the back. Sometimes the channel iddicatpr will flash but there is only a barely noticeable drop in volume, and usually there is only one light that remains lit, I chalked it up to being a quirk but if it is blowing fuses while connected to a power conditioner with surge suppressor I知 thinking something may be wrong.
    Oh ok. Well in that case try swapping out the fuse when you can and then try the procedure outlined above and report back on what happens.

    Michael Lapke
    Specialist, Community
    MUSIC Tribe
    BEHRINGER