Yes, it was definitely just the drive ID information that was garbled. I've tried the new cable with the longer Eutronix cable. I am still intermittently getting the No Hard Drive error. Last time, all I did was cycle the power and it came up. That makes me suspicious of mechanical (solder joint) type problems, but I don't have any experience debugging these things.
What's my best option, wait for it to fail in a more permanent way or send it away to be fault tested by an expert? Thoughts?
Thanks everyone,
Jim