Korg Capacitor Help

[baronvonbovine]

Hi, I'm replacing old polyester metal foil capacitors from the filter cutoff and resonance circuit on a korg delta. Does Anyone Have Any Ideas On What Type To Replace Them With? 1uF

 

[davenn]

I'm replacing old polyester metal foil capacitors from the filter cutoff and resonance circuit on a korg delta

why ?
do you know that they are actually faulty ?