Re: intel power converter
With all of the power off, unplugged from the shore power and the batteries disconnected try to tighten all of the wire connection's going to and from the converter. You want them tight. Hopefully that will work.
If not, have a repairman take a look at it. Might just be a transformer. I would go this way first. If it is still working like it should be and you are just getting a loud hum, I am thinking it should be an easy fix.
My rule, if it cost more then 60% to fix it, replace it.
Please let us know what is happening. :approve: