Patches and discussion for Ensoniq VFX family

Thanks for all your suggestions so far, especially Steve.
Here's how I stand at the moment....

All keys replaced after checking all the circuitry beneath them.
(Soldered over the connecting ribbon joints to make sure and cleaned
the board surface of crud and dust)

Still the same message - calibration error. After pressing
re-calibrate about 6 or 7 times I get the keyboard not
found/recognised message.

** If I press 'ignore' (to get the patches displayed) and then do the
're-initialize' function - it all goes dark, permanently, with disc
drive light flashing once every 5 seconds or so, until I switch it off.

Powering back up starts the whole thing over...

Should I just give up..?

Thanks,
Tom