Did the through hole plating on the capacitor leads get ripped out when the caps were replaced?
That is unfortunately a common issue and I've had to repair that on many boards.
When that happens you end up just soldering the cap to the bottom of the board but the traces on the component side are open.
To fix you will need to pull the caps back out, solder a small L shaped piece of wire to the top foil and let it drop through the hole.
It could be something else but if the caps were replaced I'd check this first.