Marshall MG100DFX schematics and parts

wileycoyote · 09-26-2008, 02:59 PM

Where can I get Marshall MG100DFX schematics and parts. I need to replace IC1. It has burned completely and I cannot read the numbers. I can read a manufacurers logo "ST". It is a SIP IC on the power board module. The IC mounts to a heat sink. The module has a pigtail that plugs into the main board. Where can I find either the module or the IC? Or possibly schematics and a good source for parts.

Enzo · 09-27-2008, 01:34 AM

The schematic is posted in the Enzo gallery at www.ampix.org

The 15 leg power IC on the heat sink is a TDA7293V - it is the power amp for the unit.

The chip with small board attached can be ordered from any Marshall dealer or from places like http://www.marshallparts.com/

I usually buy my 7293s from Mouser. They currently have 622 of them in stock and they sell for $6.48 each. Probably won't run out of them soon.

wileycoyote · 09-29-2008, 02:42 PM

Thank you Enzo, you made the task of finding technical info a breese!

Wile E. Coyote (super genius)

bassman83 · 09-20-2009, 10:48 AM

I was wondering if this is the same power module for the mg100hdfx that is sold at marshallparts.com here is the kink [url=http://www.tubesandmore.com/scripts/foxweb.dll/moreinfo@d:/dfs/elevclients/cemirror/ELEVATOR.FXP?item=P-KORG-PM

09-26-2008, 02:59 PM	#1
wileycoyote Junior Member Join Date: Sep 2008 Posts: 2	Marshall MG100DFX schematics and parts Where can I get Marshall MG100DFX schematics and parts. I need to replace IC1. It has burned completely and I cannot read the numbers. I can read a manufacurers logo "ST". It is a SIP IC on the power board module. The IC mounts to a heat sink. The module has a pigtail that plugs into the main board. Where can I find either the module or the IC? Or possibly schematics and a good source for parts.

09-29-2008, 02:42 PM	#3
wileycoyote Junior Member Join Date: Sep 2008 Posts: 2	A very valuable resource for the at home tech Thank you Enzo, you made the task of finding technical info a breese! Wile E. Coyote (super genius)

09-20-2009, 10:48 AM	#4
bassman83 Junior Member Join Date: Jan 2009 Posts: 4	Quick Question I was wondering if this is the same power module for the mg100hdfx that is sold at marshallparts.com here is the kink [url=http://www.tubesandmore.com/scripts/foxweb.dll/moreinfo@d:/dfs/elevclients/cemirror/ELEVATOR.FXP?item=P-KORG-PM

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09-27-2008, 01:34 AM	#2
Enzo Senior Member Join Date: May 2006 Location: Lansing, Michigan, USA Posts: 9,266	The schematic is posted in the Enzo gallery at www.ampix.org The 15 leg power IC on the heat sink is a TDA7293V - it is the power amp for the unit. The chip with small board attached can be ordered from any Marshall dealer or from places like http://www.marshallparts.com/ I usually buy my 7293s from Mouser. They currently have 622 of them in stock and they sell for $6.48 each. Probably won't run out of them soon.

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