Can you get me pictures of the two presets ROM’s (your picture is close but I still can’t read the writing), and ideally of the OS ROM under the sampler board? But if that is too much of a hassel, what does the unit display when you turn it on (H3000? H3500? v2.17? v2.16, etc etc) Also, every ROM *besides the OS ROM* is electrically in parallel, so their position/slot is not actually critical. BUT you cannot mix 256 and 512K/1M program ROM’s. The jumper has to be set correctly. I can’t tell if someone put different ROMs in there and took out the H3500 programs and OS ROMs.
