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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: hi i am john... i have a 100dfx mg series... it is
There are MANY more likely components than the transformer that will cause the fuse to blow.
Most common are filter capacitors, rectifier diodes, and shorted components in the power amp section.
Transformer failure is very UN-likely. Have a competent electronic tech troubleshoot the unit.
When testing the unit, put a 150 watt light bulb in series with the power line... saves fuses during troubleshooting. This limits the current so one can analyze the real cause of the problem.
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