Sorry about the lack of updates. I basically did other things for over a year!
Eventually, I sourced a few untested S10430 chips form a very nice guy in Holland. The deal was that I would test the chips in my delta and sell on any working ones (apart from the one I needed).
Well, eventually, after I had desoldered IC3 (S10430) and installed an IC socket, (Thanks to Amilcar in Portugal for the advice) I was able to test the chips, and they ALL worked.
So I now have three S10430 chips for sale on ebay. (See other thread).
Moving on, I have also replaced the broken single/multiple trigger switch and I'm about to move on to replace the filter caps (which is why the thing only works in one filter mode). I bought the kit from taunus_osi on ebay..
That leaves the broken synth release slider and the broken rhs end panel. I'm looking at getting wooden end panels made, so we'll see how that goes.
However, I have a problem: I can't get the metal panel off the top of the ADSR sliders!. I have removed ALL the screws/bolts/nuts etc, but it will not budge.. I can't replace the slider until I get that off.. Does anyone know what I've missed? The service manual doesn't show any other fixings, so I'm stuck.
Help!