Likewise, the LCD driver board typically needs capacitors replaced.

C1, C2: 22uF 35V SMD electrolytic 5.6mm tall, 6.25mm dia. Mouser p/n 667-EEE-HB1V220P

C3, C4: 47uF 25V SMD electrolytic 6.4mm tall, 8mm dia. Mouser p/n 667-EEE-HB1E470AP

C5: 100uF 16V SMD electrolytic 6.4mm tall, 8mm dia. Mouser p/n 667-EEE-HBE101UAP

Electrolyte leakage from the old capacitors may also damage the trimmer resistors. Both original parts are Panasonic EVM1U which is no longer available. You may be able to bodge wire modern trimmers.

R1: 20K ohm, typically set with the upper resistance at 6K and the lower resistance at 14K (metal cup side up, 3 leads to the right, 1 lead to the left.) Probably safe to replace them with individual resistors.

R2: 500 ohms set to the halfway point (250 ohms from center to each side)

Capacitor electrolyte is mildly acidic and can eat through traces and vias. Neutralize with baking soda and wash the board thoroughly before putting new parts in place. Check continuity of traces and vias in case you need to make more repairs.