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Old 25th June 2013, 12:48 PM   #1
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Default MARSHALL AMP G100RCD

Does anyone have a schematic for the Marshall G100RCD amplifier
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Old 25th June 2013, 04:27 PM   #2
amptech is offline amptech  Scotland
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what's the fault?
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Old 25th June 2013, 11:23 PM   #3
Enzo is offline Enzo  United States
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Good first question ^^^

And here is the drawing:
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File Type: pdf Marshall MG100RCD.pdf (156.9 KB, 71 views)
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Old 26th June 2013, 11:18 AM   #4
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The problem with this amp is that when you turn on the transformer makes a loud buzz. When i isolate from amp the transformer goes quiet. I have just got schematic from Enzo. So ill work through all the components.......Thanks....sean
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Old 26th June 2013, 11:21 AM   #5
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Thanks for schematic, i repair a lot of Marshall AVT 275/150 amps main probs the TDA's. Ive followed a lot of your posts on peavey repairs of various amps....Thanks sean
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Old 26th June 2013, 05:34 PM   #6
amptech is offline amptech  Scotland
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Seantdrums, quick way round this would be to plug bulb limiter in..most common faults with avt amps are blown o/p chip stages unplug it and re-power the amp back up.

Having dealt with marshall in the uk for many years I carried out countless repair's to the valve state amps such as AVT2000 Plus AVT H amps with thermark o/p device up grade pcb.
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