It also looks like there might be some solder joint separation on the 8-pin connector. Would be worthwhile to re-flow those and any others that look suspect. Here are some part numbers for the MOSFETs, diode, and voltage regulator: Qty 2) NEC K591 => NTE 2985 Qty 1) NEC 14305 => NTE 960 Qty 1) FMU 24S => NTE 6241 I have ordered these replacements, but haven't gotten around to doing it myself. From comparing the old and new datasheets, the new components are an upgrade in terms of power handling.
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