A590 harddisk distortion

[Oldsmobile_Mike]

Not sure what you mean by "distortion", but here's a couple suggestions for you if you suspect the A590 PSU is causing you trouble:

1 - Convert your A590 to use motherboard power:
http://members.iinet.net.au/~davem2/overclock/a500hd.html

However if you're going to do this I'd recommend getting one of those MechWare SCSI card readers or a SCSI-to-IDE bridge plus an IDE-to-CF adapter, so you you can use low-power CF cards.

2 - Get this adapter from AmigaKit and an old PC PSU:
http://amigakit.leamancomputing.com/catalog/product_info.php?cPath=39&products_id=901

3 - Find a replacement PSU on ebay or Amibay.  Good luck!  

[Oldsmobile_Mike]

Well, I looked into that but I don't think that's really suitable for the A590. The A590 psu has a 'power sense' line and this one does not. It would mean the A590 is continuously switched on instead of being switched on/off by the Amiga. I wonder if I can make an ATX psu react to that 'power sense' line.

Still not really clear what you mean by "distortion", but if you have your entire system hooked up to a power strip you can just turn it all on or off that way - no need to fuss with the "power sense" line.  

[Oldsmobile_Mike]

Eh, noise in the picture (not in sound though, as far as I can hear it).

So just to be clear, you're getting distortion in your picture when you've got the PSU for the A590 plugged in, and it doesn't matter how far away you set the PSU from the monitor, you still get it?  What type of monitor and video connection are you using?  Since the A590 sits pretty close to the Denise chip inside the A500 case, I wonder if it could be somewhere in the power interface circuitry of the A590 that's bleeding over into the A500?  Does your system have all of it's metal RF shielding intact?

As a test I'd recommend getting that adapter from AmigaKit and a spare PC PSU.  It's cheap and will help you with the troubleshooting process, even if it's not the perfect solution.  I totally understand about "my precious", haha!  :banana:

[Oldsmobile_Mike]

Oh, look what random picture just came up in the gallery link:

http://www.amiga.org/gallery/index.php?n=2223