Where are you located? Are you in the US? You could pack up your cards and send them to me for testing, if you wish. I have three of these things, one of which I don't mind risking in the event a card might be damaged and then damage the camera in turn (not that I think this a likely occurance).
In case you weren't following, I had one without a shutter button/power switch and Kiu had one with said switch but a busted main control dial, so I bought his and scarfed the switch to fix mine. I can always rig the 'parts doner' to power up and fire though, which makes it a perfect card tester.
It'd only be worthwhile if you're in the US, though, as international shipping would wind up being too costly for troubleshooting these old things.