Optigan

Yes and no. From a musical standpoint, they’re very VERY wrong! But nothing is actually wrong with your Optigan. In order to fit enough stuff onto the discs, they had to cut corners a bit. There wasn’t enough room for A and E major, so they decided that they would take a C# dim chord [...]

Usually this problem can be cleared up by getting into the contact board and using a pencil eraser to “erase” all the gunk and oxidization from the contacts. This process is actually very easy- it just takes awhile to gain access to the contact board itself. Sometimes the problem remains no matter how much you [...]

Yes and no. From a musical standpoint, they’re very very wrong. But nothing is actually wrong with your Optigan. In order to fit enough stuff onto the discs, they had to cut corners a bit. There wasn’t enough room for A and E major, so they decided that they would take a C# dim chord [...]