You can expect at least 1 wet electrolytic cap , if not all have high ESR and if circuit depends on ESR, functions will fail.
If you can test for C value and ESR, replace all, large caps.
If you cant verify voltage on every test point, this is the easiest plan.
Wet caps age rapidly when not used > 3 yrs for ESR, which if operated can reduce C.
label each cap location and test after. If it still fails then secondary damage may have occurred if you verify a flawed cap with LCR meter type test or pulse test with good cap of same value to get 50% step size