jake
New Member
Posts: 14
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Post by jake on Aug 5, 2007 11:28:03 GMT -7
My volume knob has some dust issues , i can hear it when i turn the knob back and forth , but after heating up the speaker keeps that wierd crankling , static noise , the same as if you hear when working the volume knob back and forth. i cant detect any loose connections , retubed it , checked the chasis screw's , is detoxit gold ok for cleaning pots on this amp , fixed the pot on my tele right up. or does anyone think iv'e got other problems? maz 1x12 combo , thank's jake.
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Post by billyguitar on Aug 5, 2007 11:39:11 GMT -7
Speakers wouldn't be the source of a sound like that. The only time a speaker will make any sound is when it's actually playing because you've given it a signal.
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Post by Telemanic on Aug 5, 2007 14:34:06 GMT -7
Yeah, it's important to know for sure WHEN it happens, (playing or not playing, or both) - and If you can identify anything in particular that sets it off, ie, wiggling any of the tubes, volume setting as in, does it only happen when the amp is cranked? etc. - Youve done the right by trying some known good tubes, but also the no-brainer that youd be suprised how many guy's overlook, is your cables! Also be sure it's not your house electricity! Pretty much do what it seems like your on the track of, and that is a process of Elimination. Start with the most stupid obvious things and then progressively get deeper, try to nail down in detail when it does it. If it's happening when your playing it is possible that it's the speaker depending on the sound. Could be a voice coil rubbing, you can check it by carefuly pressing on the cone, with your fingers distributing the pressure evenly, and listen for any friction noise while compressing the cone inward gently but enough to get some travel. That would be probably more of an mechanical type noise but worth a check. If you can just try a different speaker. If not that, nor a loose tube socket, cables or elctric, guitar etc. .... then you'll probably have to go to the next level. The pots shouldnt be that dirty unless a real dusty dirty enviroment, but try a shot anyway. Next stop is probably into the chassis, IF ... your experienced there, ..... and look for any loose ground connections, or obvious discrepancies. If your not familiar, DONT go pokin around, there's big voltage in there!!! Beyond that i think your gettin into some Tech-y areas. I have a Vintage amp that started intermitantly crackling loudly and simultaneously losing power, only when hit hard at near or max volume, ...... and after checking all caps, resistors, voltages etc., found it to be one leg of my Output tranny's windings was arcing under heavy draw, ...... bummer, no replacement in my case! But fortunately that would be the last and most extreme case and so pretty unlikely i think for your amp. It is a characteristic sound that once you experience it you know it. Best of luck to ya!
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jake
New Member
Posts: 14
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Post by jake on Aug 5, 2007 16:28:45 GMT -7
thank's for the comeback , no bad cables , iv'e checked , i got the guitar plugged straight in , volume on giutar off , volume on amp off , and the static will come and go , turn the volume on the amp all the up , and it dissapears.
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jake
New Member
Posts: 14
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Post by jake on Oct 4, 2007 8:02:56 GMT -7
Well , this problem has been solved , turned out to be a dusty vol. pot , and upon pulling the chassis , and a shot of detoxit , no more weird static.
thank's guy's jake.
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