"Lorin David Schultz" wrote in news:7he9d.39438
$223.25963@edtnps89:

"Roger W. Norman" wrote in message
...
Sounds to me like you probably put a new cable in for the hard drive,
which
is faulty, but not faulty enough to fail, just be noisy.



I don't know about that. Seems to me that if it was noise radiated from
the computer he'd hear it all the time. The fact that the noise is only
on one buss, and exists even with all the signal lines disconnected from
the console, suggests to me that the problem is in the board.


I'm still not sure what it was, but it's gone. I did the "rip a bunch of
wires out that grew organically" and organize them. Not anything I'd
expect to change a hum, like the monitor cable had gotten wrapped around
the lightpipe cables (yeah, lots of rfi with lightpipe . I hate not
knowing what it was, but I like not having it. At least that area looks a
whole lot cleaner.

Thanks for your suggestions,
Greg