This sort of issue is almost impossible to help someone with by remote control.
It's easy enough to make suggestions and encouraging comments, but it's never clear whether the solution would be self-evident if you could actually lay your hands on the instrument.
For example, have you remembered to put the aluminium shield back over the reed bars?
I would avoid going down the path of adding things to the instrument like shielding until you have it working the way you remember it.
It's highly likely that it is just a single shielding connection that has mechanically broken while you've been working (or one that has not been resoldered to the amp pcb).
There is a huge double spread picture of the insides of a Wurlitzer 200A (with aluminium shield removed) in Classic Keys: Keyboard Sounds That Launched Rock Music that could help you track down missing or unusual wiring.
See attached thumbnail of the picture.
David
It's easy enough to make suggestions and encouraging comments, but it's never clear whether the solution would be self-evident if you could actually lay your hands on the instrument.
For example, have you remembered to put the aluminium shield back over the reed bars?
I would avoid going down the path of adding things to the instrument like shielding until you have it working the way you remember it.
It's highly likely that it is just a single shielding connection that has mechanically broken while you've been working (or one that has not been resoldered to the amp pcb).
There is a huge double spread picture of the insides of a Wurlitzer 200A (with aluminium shield removed) in Classic Keys: Keyboard Sounds That Launched Rock Music that could help you track down missing or unusual wiring.
See attached thumbnail of the picture.
David