I had one that would crash when sampling and the vu would jump around with no input. My case turned out to be a faulty timing control chip. As for the hard drive make sure it is a clean drive (f disked) or you will format it and it will still ask a boot disk. It won't load system files to the hard drive if there is already sys files on it.
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Subject: Re: [emax] Resurrecting an Emax HD rack - Issues keep mounting
Sent: Tue, Feb 4, 2014 3:14:55 AM
If the machine is being erratic it could be losing it's calibrations or something.
Thank you for the reply Ted, I really appreciate it.
I tried the maneuver again and got it to boot. When I went to sample again, both the VU gain and recording threshold reference meters were peaking at the limit without any audio input... which would suggest internal noise, or perhaps a bad chip somewhere? I found this odd, as the VU gain and threshold levels were fine the previous time I had it booted and attempted sampling.
I ran an HD scan and it reported no bad sectors. I turned it off again, put the casing back on, and turned it on again. Then it returned to the problem of the OS not booting from the HD. Once again it asked for me to insert a disk... each time I put the formatted disk in, it refers to a disk error.
What would be suggested by a poor boot sequence & OS access, but a passed scan?
Is it possible that the VU is associated with the hard drive? (I imagine that would be tough to diagnose)
I'm trying to weigh out my options... I don't have a lot of available funds, and the HD replacement alone would be expensive, let alone both a HD + floppy drive emulator or replacement. Further, is it likely that the VU issue suggests additional issues with any chips?
Sorry for all the questions, but again, any advice is greatly appreciated.