Roland rs-70 repair help please

Hi, I need a lot of help fixing this, I have 3 months in this and I just cant fixit all, I,m gonna tell, I bought it, and when I check it, it was whit capacitor of diferent Uf (10uf) and schematic say 110uf, I replace it all, all, and only de blue light of lcd were present, continue checking I found q17 power supply, q16 mute, q19(mosfet in usb cpu), ic41(inverter) that lost pins by corrosion, and many capacitor smd and resistances that were damages, now it truns on, but , lights in panel are inetermitents, lcd doesnt work, buttons in panel do not response. I need help PLEASE