Members Jkater Posted September 16, 2011 Members Share Posted September 16, 2011 Can't explain it: the singer's acoustic guitar was plugged to a channel and wasn't loud enough (didn't have a pre-amp between guitar and mixer) so I try pushing that button that says +4db/-10db to see if it changes the gain... KNACK! big loud noise in the speakers and the house breaker goes out. Put the breaker back on... Mixer is dead, won't turn on. We plugged the keyboard on a small monitor and played acoustic and unamplified the whole gig... I brought it to the store to have it checked out and it's more than the fuse. Something's broken and it will be sent for (hopefully) repair. Can someone tell me what the hell possibly happened? Did I break that thing just pushing that button? Link to comment Share on other sites More sharing options...
Members caveman Posted September 16, 2011 Members Share Posted September 16, 2011 Power surge? Link to comment Share on other sites More sharing options...
Members Jkater Posted September 16, 2011 Author Members Share Posted September 16, 2011 Power surge? Thanks for responding, CM. Would a power surge have something to do with the mixer or is it outside of it? Unless it is a strange (and embarassing) coincidence, it seems connected timely with this push of that button. Link to comment Share on other sites More sharing options...
Members Neon Soul Posted September 16, 2011 Members Share Posted September 16, 2011 Can't tell you what's wrong but it's good practice gigging and in the studio to turn down levels before changing something. 14db is quite a boost to put through the PA. I'd also go with power surge though. Link to comment Share on other sites More sharing options...
Members Jkater Posted September 16, 2011 Author Members Share Posted September 16, 2011 Can't tell you what's wrong but it's good practice gigging and in the studio to turn down levels before changing something. 14db is quite a boost to put through the PA. I'd also go with power surge though. Yes, the fader was all the way up and I didn't think of lowering it before pushing the button. Link to comment Share on other sites More sharing options...
Members dcindc Posted September 16, 2011 Members Share Posted September 16, 2011 that technically shouldn't have killed it. It's prolly an internal fuse. ALWAYS take a spare whatever.... Link to comment Share on other sites More sharing options...
Members caveman Posted September 16, 2011 Members Share Posted September 16, 2011 I wouldn't think that a maxed fader would throw the house breaker. That's why I suspected a power surge from the outside. Was there anything else turned on that was affected as well? What did you smell if anything? Link to comment Share on other sites More sharing options...
Members Jkater Posted September 16, 2011 Author Members Share Posted September 16, 2011 I wouldn't think that a maxed fader would throw the house breaker. That's why I suspected a power surge from the outside. Was there anything else turned on that was affected as well? What did you smell if anything? Keyboard was plugged to the same outlet but wasn't turned on at that time. Nothing else got damaged. Link to comment Share on other sites More sharing options...
Members Cobalt Blue Posted September 16, 2011 Members Share Posted September 16, 2011 Unable to help in regard to the technical stuff, but I do give you my condolences in regard to your disappointment. Link to comment Share on other sites More sharing options...
Members caveman Posted September 16, 2011 Members Share Posted September 16, 2011 If there was a short in the head you would have smelled it. Sorry I can't help you more Let us know how it comes out. Link to comment Share on other sites More sharing options...
Members Jkater Posted September 16, 2011 Author Members Share Posted September 16, 2011 Thanks! Hopefully, the damage is limited to something simple to replace like the power supply. Quite a bummer, the thing wasn't old and we're not rich... Here's the little beast: Link to comment Share on other sites More sharing options...
Members caveman Posted September 16, 2011 Members Share Posted September 16, 2011 Might be a help in the future but I plug my PA and guitar rig into a surge protector. A couple of years ago we were playing a remote with a furnished generator. The damn thing spiked on us but our surge protection shut the door before anybody got electrocuted or gear was fried. Link to comment Share on other sites More sharing options...
Members t1r2u3s4t Posted September 16, 2011 Members Share Posted September 16, 2011 maybe one of the speakers is shorted Link to comment Share on other sites More sharing options...
Members mike42 Posted September 16, 2011 Members Share Posted September 16, 2011 The fact that the thing doesn't light up at all is a pretty sure indicator of a power supply problem. Whether something else is blown is another question. The fact that it popped the house breaker is pretty good evidence of a major current overload in the mixer. I'd be inclined to suspect this might be due to some pre-existing defect in the mixer, and that you may just have drawn the short straw, in that you were the one who punched the boost button when it blew. Link to comment Share on other sites More sharing options...
Members Pope on a Rope Posted September 17, 2011 Members Share Posted September 17, 2011 I've made that same mistake a few times. If the singer was playing at the time you hit that switch it could have jolted the power section hard with the fader being all the way up. It's possible that when the gain switch was transitioning between settings there was no proper voltage regulation between the pre-amp and the power-amp for that moment. Since nothing smells burnt, I agree with dcindc that it may just be an internal fuse that was blown. Link to comment Share on other sites More sharing options...
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