Replace the two caps you got up there by the wire harness. Though they look clean, any electrolytic caps older than 10 years should be suspect for replacement because they would leak over time.

Also, to me, it looks it took a soda bath long ago. Just before removing the caps:

- Dunk in warm water to loosen up and remove the old sugar.

- Then dunk and rinse out in acetone to remove any cap goo.

- Lastly rinse out in high proof alcohol (I use 70% or higher Isopropyl when I can find it.) and then let dry.

Without powering up the unit, it is hard to tell if the LEDs are Red or IR. A continuity check of the cable would be best.