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Marshal mg 30 fx schematics - Music

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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bob_computer
  • 3153 Answers

SOURCE: marshall mg 100hdfx fan

Some of the Marshall equipment uses computer size fans and even on occasion the same connection.

Take the bad fan with you to a computer repair shop it will be much cheaper than a marshall part they should be able to help you out

Posted on Sep 09, 2009

Testimonial: "that sounds like the best way to do it..will just take fan to computer shop and try and get a replacement...thanks for the assistance"

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SOURCE: Buzzing fan on a Marshall mg 100 head

Try to remove the fan and look for the sticker on the back side where the wires come out.

Remove the sticker, underneath it there will be a small aluminium cap (sometimes there is no cap and the axis is readily visible when you remove the sticker).

Take the cap off with a sharp tool (it shouldn't require a lot of force to do it), now you should be able to see the fan axis being held in place by a small clamp - put a drop or two of machine oil in there, move the fan blades a little to make the oil flow past the axis into the bearing.

Reinstall the cap, put the sticker back in place, reinstall the fan and test it.

Sometimes this will make things better, but if it doesn't then it is only fair to replace the fan.

regards

Triarcuate

Posted on Sep 29, 2009

  • 5603 Answers

SOURCE: I need the schematics for a Marshall MG-10KK

Most of the problems with the small guitar amps are blown power amp chips. They usually use chips like the TDA2030 which look like a power transistor.
Most other problems involve broken connectors, bad solder joints or cracked circuit boards. The power supply area is so simple one doesn't need a schematic for that part which is usually just three terminal regulators for +/-15 volts. Schematics are often hard to find.
Try this site, although this is a different model, much of the schematic will likely be the same.

http://elektrotanya.com/marshall_valvestate10_10w_8001_8010.pdf/download.html

Posted on Nov 17, 2010

sparky1500
  • 1066 Answers

SOURCE: Can I connect my Marshall

yes

Posted on Mar 26, 2011

  • 5603 Answers

SOURCE: How to fix an output jack for a marshall mg 100

You have to remove the amp from the case. These jacks are JUNK and it likely will have to be replaced. In any event, the amp has to come out to work on it. Several screws in the case and OFTEN the screws holding the handle. Be careful of the speaker leads.

Posted on May 24, 2011

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1 Answer

Marshall mg30fx


go here :-

http://www.amparchives.com/Amp%20Archives/Marshall/Schematics%20&%20Layouts/MG%20Schematics/Marshall%20MG30DFX.pdf

Apr 01, 2014 | Marshall Amplification Marshall MG30FX

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How to fix an output jack for a marshall mg 100 fx. Came loose and is inside the amp


You have to remove the amp from the case. These jacks are JUNK and it likely will have to be replaced. In any event, the amp has to come out to work on it. Several screws in the case and OFTEN the screws holding the handle. Be careful of the speaker leads.

May 23, 2011 | Marshall MG100HDFX 100-Watt Amplifier Head

1 Answer

I have the old 3520 200w SS head. It is blowing the fuse as soon as I power up. No one around here (south of Dallas, TX) know anything about this amp. I am using the Marshall 1553 cab w/ one 15"...


Here is a link to your schematic:

http://elektrotanya.com/marshall_bass_200w_3520.pdf/download.html

Scroll way down and click on "Get Manual" link. They will only let you download two a day unless you are registered.

Suggestion is to troubleshoot and repair the unit.

You will likely find one of the following:

Shorted transistors in output TR5 through TR10

Shorted rectifier diode(s)

Shorted fillter capacitor

Shorted power transformer (not very likely)

Mar 21, 2011 | Marshall Amplification Marshall Mg Series...

1 Answer

I need the schematics for a Marshall MG-10KK guitar amplifier in order to repair it! I'm a good technician but I don't speak english very well... rsrs Thanks!


Most of the problems with the small guitar amps are blown power amp chips. They usually use chips like the TDA2030 which look like a power transistor.
Most other problems involve broken connectors, bad solder joints or cracked circuit boards. The power supply area is so simple one doesn't need a schematic for that part which is usually just three terminal regulators for +/-15 volts. Schematics are often hard to find.
Try this site, although this is a different model, much of the schematic will likely be the same.

http://elektrotanya.com/marshall_valvestate10_10w_8001_8010.pdf/download.html

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For a test in troubleshooting, see if level from the headphone jack fades or not when this happens and get back to us.

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I need the schematics for a Marshall MG30DFX guitar amplifier in order to repair it.


If you still want the schematics for the Marshall MG30DFX Steve I have them and can email them to you if you want

Dec 10, 2009 | Marshall Music

1 Answer

Mg 50dx no sound


Contact Marshall on the web or try a search for exactly what you need, most companies will help you with there products no matter how old they are .

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