mkarcher wrote on 2022-02-02, 22:47:
... and risk getting higher distortion as a side effect.
Distortion is a lot lower on bipolars (and much higher voltage rating capacitors) and not going to be higher, due to the thicker coating on the electrodes. I'm not completely sure what the mechanism is but measurements done by some people (such as Douglas Self) clearly show significantly reduced THD levels. It is still only low freq distortion where there's any improvement, in the cutoff freq region where voltage across the capacitor is greatest. I'm not sure you can even get bipos in this package anymore. Even such through hole parts are being EOLd, some stuff I have been using suddenly became not available 🙁
It definitely looks like there's bad capacitors on the card, all the solder joints of them are off color compared to other things and it looks like it is affecting nearby joints too so this card should be fixed sooner than later or there will be corrosion damage that may be difficult to repair if allowed to presist. If you have never soldered in your life, doing this on your own without any experience is going to result in major difficulties that may not be easy to fix such as ripped traces and pads. The leaked stuff tends to loosen up the copper from laminate
I could do the repairs and restore the card to former glory but shipping etc. might be expensive since I'm in europe.