readynas 600 won't boot slow flashing blue light

With the help of paid support I gpt my data back and put it on a Pro 6 and have backups running.

I got new disks for the 600 and did a factory reset, about 8 hours later it stopped with the third light yellow, which I read to mean a bad disk.  (These are new or "recovered" disks from other purposes.)  They passed manufacturer diags.

I tried again, but could never find the 600 in Raidar again.  After a couple of hours of self help, I noticed that the NIC didn't seem to be working.  I noticed other strange things like the power button/factory reset codes giving odd results. 

I reseated the DIMM and it seemed to respond more reliably, but then went downhill again.  My aha moment was to replace the power supply, as fans spinning but otherwise odd behavior, like everything described above could be explained by a bad power supply. (No, I don't know where to get one.  The last time the power supply died, I bought 2, because they were hard to find)

Things seemed reasonable again, other than booting with no disks attached doesn't give the expected lights, and the NIC still didn't work.

So, I connected the NAS to a PC and raidar couldn't find it, but that kind of made sense, since I noticed the NIC on the PC would flash green for about a half a second, and then go dark for about 10.  Not unexpectedly arp doesn't see it either.

So I thought I would try outting in a realtek PCI NIC I have lying around, something chirpa recommended long ago.  That gives me a good NIC light but nothing else.  Probably means that particular card isn't "supported." (I know none actually are, but some apparently work, which ones if anyone knows)  The other thought I had was even if supported, you might not be able to factory reset of it.

So next, rewrite the CF.  I have a 2GB CF (could it be too big?)  and I can't find the raidiator download for this model. Where?  I do have rawrite.

Partiicularly on the last 2 questions any help?

Also if anyone knows, if the PCI card "works" should you be able to factory reset off of it, or would that only work on the on board NIC.  PCI NICs not supported, I know.  But if someone knows?

Long winded, but I believe in self help, so I tried everything I could of before posting.  Its old, but I have spare parts.  Just probably need a soldering iron to fix a bad NIC, and best buy isn't going to be helpful there. 

Thanks in advance.