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General => General discussion => Topic started by: Cory on 27 September 2011, 18:58
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anyone know much about guitar amps . . . my marshall is sparking and smoking . . . :cry:
my fiance spilt sugary tea all over it and has gotten on the circuit board. cleaned it all off as its not the first time its happened, had it running for about 10 mins then sparks started to fly.
i have taken a picture of the offending component, will post picture shortly
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Maybe it dont like sugar in tea :lipsrsealed:
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Maybe it dont like sugar in tea :lipsrsealed:
:grin: :grin:
was it all compleatly dry when you turned it back on? and by compleatly dry i mean left for a good few days?
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to be fair it wasn't. spent a good couple hours with tissues, cotton buds and then a hair dryer (on cold)
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hmm if its had that i cant see any reason it should still be wet. unless the moisture was absorbed by any component. what was it that started to spark
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my marshall is sparking and smoking...
Sounds about right :lipsrsealed:
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What model is it?
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the amp is an AVT150
this is a picture of the amp . . .
(http://i614.photobucket.com/albums/tt223/Guitar_cory/IMG_0957.jpg)
you can see the marks from the sparking white plug . . .
and a close up . . .
(http://i614.photobucket.com/albums/tt223/Guitar_cory/IMG_0956.jpg)
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well im sure tea isnt good for it :grin: it could be that it hadnt dried out properly, how old is it? i had a marshal HDFX100 head years ago and that went bang one day at practise, smelt like fireworks but that was due to the age and dsut clogging up parts i think :rolleyes:
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the white plug looks like a generic power supply for any additional component. therefore if two of the terminals made contact (with tea) it's shorted the circuit. try cleaning away all the soot and make sure there's no liquid on the reverse of the board,
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yeah thats what i was thinking . . . my electrical skills are crap, but know a little bit.
what you guys think on the chances of it working when its all dry?
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Bring back valves! :grin:
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yeah thats what i was thinking . . . my electrical skills are crap, but know a little bit.
what you guys think on the chances of it working when its all dry?
Get yourself a home made audio probe, download the schematic and trace the signal, by the looks on the schematics there's possibly about 10 components that appear to be fried which a probe would point to and then you can solder replacements in their place...
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Bring back valves! :grin:
AVT150 has a preamp valve. :smug:
Admittedly it's no substitute for a nice class A low watt toob amplifier.
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Bring back valves! :grin:
AVT150 has a preamp valve. :smug:
Admittedly it's no substitute for a nice class A low watt toob amplifier.
I has two full of valves :afro:
Anyway, that accident could be the best thing to happen to an AVT Marshall. Now go out and get yourself and Blackstar HT-1 or HT-5 and thank me later. Unless you want to gig then get a HT-40 or something.
(http://farm6.static.flickr.com/5104/5619353225_9f08fcb6f2.jpg) (http://www.flickr.com/photos/t_j_g/5619353225/)
Blackstar (http://www.flickr.com/photos/t_j_g/5619353225/) by T_J_G (http://www.flickr.com/people/t_j_g/), on Flickr
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I play an LC30 and I've never needed to push it past 4 when gigging.
A Blackstar 40 must be an absolute monster!
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I had a Valveking 100w fully valve head, now that was a monster!
Although remember twice the power is not twice the volume :)
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I do like the valve king.
Whenever I'm recording I use a Selmer Treble & Bass head which is a 50W and an Epiphone Hot Rod Valve Junior for others which is 5W. They're amazing pieces of kit and were proper cheap. If you need a replacement amp, check your local Gumtree for some valve combos at some really good prices.
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I don't need anymore just offloaded one (5w single channel all valve head ) although the guy paid for it 3 weeks ago and hasn't had it collected yet and may fill it's gap with a new guitar.