Capacitors fail over 20+ years. The schematic lists every capacitor by reference designator (C1, C2, etc.) and value (47µF 10V, 100µF 6.3V, 0.1µF ceramic). Use the schematic to order a cap kit from Console5 and ensure you place each one in the correct polarity.
was ever publicly released. The "schematics" used by the modding community are reverse-engineered diagrams created by hardware hackers. snes jr schematic