“Since the last time I listed this, I was fortunate enough to be loaned a working JP8 by a customer who allowed me to swap boards around with this model.
originally, I believed the EnV gen ICs to be dead (IR3R01), however upon putting my voice cards into his machine all but 2 of the chips seemed to work.
So my guess is that there are problems on the module controller boards and/or the interface boards.
I also believe there are problems with the connectors being corroded and causing quite strange behaviour, sometimes it will boot but with no LED display or sometimes it will start glitching and crashing after a couple of minutes.
I purchased a complete new set of molex connecters and female pins which will need to be crimped on, I will be forwarding on all the parts I collected to the whoever purchases this.
I think there are also perhaps issues with the CPU card, as I said, it seems the voice boards are in fact ok (give or take a few of the voices not always tuning correctly)
Most of it has been recapped although the main caps for the power supply were not changed as the ones I ordered took ages to arrive, but they will be shipped along with the unit.
also, a lot of the cmos chips have all been replaced and socketed.
You will notice that one of the 8 position rotary switches doesn’t have a cap on it in the photo, it is a brand new switch but has a rounded shaft rather than a splined one, so the knob wont fit back on (included) however, the broken switch is included so you can take it apart again and swap shafts out.
Also included is a stack (about 8 i think) of brand new BA662 replacements, in case they are needed.
Nothing is missing, and I wish I had the time and patience to carry on and bring her back, but I just dont..
Cosmetically, she is in almost flawless condition buttons are bright and the grey paintwork is truly outstanding.
I had full service manual printed on thick stock and bound which will also be included as well as some faders (too long, but the brushes are the same so can be used as replacements) ” Click here to visit listing on eBay