Ok, soo...I have been trying to figure this transformer noise problem out and finally took it to the local repair tech to have a look and what would you know...It is dead silent on his bench. We fiddled with it for a while to no avail. I bring it home, plug her in and push the power button, bam transformer noise. I fiddle around for awhile and take it back by his shop with a video demonstrating the problem. We plug it in on his bench and, once again, silent. He looks for a bit and says probably the transformer is loose and having mechanical hum that is intermittent. I bring it home and there it is the second I power it up. I thought this must be a problem with my power. So I try different circuits in my house, my patio, my barn, my garage...all the same, noise! I then run an extension cord from my brothers house in the back that has a different power meter (completely separate from my house) and what do ya know, silent. plug it back into my house, noise, back into the extension cord, silent!!!