rhino_neil: (Default)
rhino_neil ([personal profile] rhino_neil) wrote2007-01-09 06:13 pm

Techie help

Sound desks and DI boxes, 

a friend has asked me to look after a band / PA that has been set up a while back as a dedicated system ie it stays in one room, but has been more than a little messed about with.  

Now when the DI box is switched on I'm getting masses of mains hum, any suggestions as to possible causes or things I can do to trouble shoot?

Thanks

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