My Marshall Mg 100fx Head once in a while makes a very loud static sound. the only way I can get ride of this is to shut my power on and off.Any idea what causes this?

SOURCE: Hi,I turned on my Marshall mg series 100 dfx and

I suspect the power supply for the effects processor has failed. The effects unit will "go crazy" when power supply is too low voltage.

If the amp has loud noise, then the power amp portion is PROBABLY OK.

I had a similar problem in a Behringer amp caused by a bad electrolytic filter cap.

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

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"

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

SOURCE: i just bought a marshall MG 100FX amplifier. What

IF YOU ARE USING THE LEFT INPUT OF THE AMP PLUG IT IN ON THE LEFT INPUT OF THE 212. RETURN AND SEND.