Please watch the youtube for repair: https://www.youtube.com/watch?v=xdTP5gev3Ew
The failure mode is cannot power up. Root cause is due to supply to digital board supply NG. Changes D15, Q10, R77, R37 and Q16 (no need change as it still working). and set back to normal.
Note the cover is rusty and remove it and polish it to remove rust, then paint it with silver pen.
