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!

Go here... https://elektrotanya.com/marshall_mg-30dfx_sch.pdf/download.html

You'll find one here-

Amp Archives Marshall Schematics Layouts MG Schematics

This is not a user servicable problem. It will need to go to the repair shop.

replace fan

I am very new here and don't know how to answer a question to a specific problem so I will write about the most common problems that I have had over the decades doing guitar amp repairs. If you find that your amp is extremely low in volume and then suddenly comes back to normal- check out the effects return [or power amp in] jack. Especially in Marshall amps-these corrode and your signal dies. If there is loud noise such as hissing and crackling with no guitar patch cord in the input jack- the input jack is likely at fault. They normally have switching contacts that ground part of the input circuit when the 1/4 inch male plug is disconnected. When this in is corroded or too weak to make normal contact, you can get these symptoms. If your amp is a solid state Marshall or Fender and there is a random buzzing sound with no guitar signal connected- hit the side of the amp and listen for the buzz to go away or become louder-if it does, this usually means that the connections are loose at the two large filter capacitors. In one or more Marshall amps, they use a filter circuit in the low voltage power supple for the preamp tubes. If you encounter a dead Marshall[the model escapes me now] remove the circuit board and resolder the four connections at the bottom of the bridge rectifier. If you have any other amplifier repair questions you can email me direct at [email protected].

NOT SURE WHAT FLUG MEANS? IF YOU MEAN PLUG. CALL GHOST BUSTERS.

Here's the link, I think. Give it a try.


http://www.thetubestore.com/lib/thetubestore/schematics/Marshall/Marshall-Valvestate80-80W-8080-8100-8412-Schematic.pdf

First and foremost make absolutely sure you know what you are doing. If the amp is in good working order you should be O.K. The biggest safety check you can do is make sure that no one has removed the ground prong from the power cord. If it doesn't have one then you should take the amp to your nearest qualified amp repairman who can do a certified repair on your amp. For instance if it is a Marshall product, take it to a Marshall dealer. This type of repairman not only has the training, tools and schematics to work on your amp he will also be able to tell if someone has done a safe mod to your amp. Not only that he can be held contractually responsible if you are injured through the correct use of the amp after he has done the repair. Read your service agreement carefully before allowing the work. Amplifiers can kill you.

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

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 .