Hi Michael,

I am not familiar with these particular Technics memory cards but for some manufacturers, these older cards required factory reprogramming if they lost battery backup. I encountered a similar problem with memory for a friend's Yamaha FX20 organ. Unfortunately where there is no factory support for these older cards, there doen't seem to be a way around this. The only ones I had any success with were the cards from a Siel DK80 synth. These could be reprogrammed in the machine directly or by using Sysex files from a computer and I did have a hard copy of the data required.
I see from your profile that you are from Poole. I went there frequently in 1991 when I was living in Pimperne near Blandford Forum. I still have a friend living in Poole but unfortunately haven't been able to get back there to see him yet.

Cheers
Len C.