Marshall MG100HDFX 100-Watt Amplifier Head Logo

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Posted on May 24, 2009
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Schematic ? I am in need of a schematic for Marshall MG100HDFX. Originally it had a schreeching sound that came and went. Easy problem loose ground wire. Now clean channel will not clean up. Op amps and caps are fine in it.voltages are all to spec. any ideas.

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matt martin

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  • Posted on Dec 13, 2009
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You need to check those capacitors. A weak or bad one will create unwanted noise and hiss!

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  • Posted on Oct 23, 2009
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This is the closest you will get right now:http://www.ampix.org/albums/userpics/10003/MArshall_MG100DFX.pdf This is also handy:http://www.geofex.com/ampdbug/ampdebug.htm The only difference between the HDFX and the DFX is the HDFX is a seperate head for a stack and the DFX is in a cab with 1X12. Hope this helps.

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  • Posted on Oct 22, 2009
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Http://www.farnell.com/datasheets/36657.pdf

That's a schematic for part of it. Sorry, that's the best I could do, I'm looking for the schematic myself. :(

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  • Posted on Sep 09, 2009
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Where can i order a replacement fan for a mg100hdfx online..can't seem to find one..not even on ebay?? thanks

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  • Posted on May 24, 2009
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