Need some information regarding the main board capacitors. I'm currently replacing all the capacitors on the sound board and now need to replace the electrolytic caps on the main board. I specifically purchased "audio" caps for my sound board. Should I purchase "audio" caps for the main board as well? It appears that C2 and C3 are related to the amplifier next to it on the top left side (I'm not sure if that amplifier even helps the audio due to it's location to the J15 header.) The capacitors that I'm concerned about are C24, C26 and C29. Should I purchase "audio" caps for these as well? Is there a big difference between audio caps and normal caps? Thanks in advance - I do appreciate it.

It's the dreaded audio hum Chris. It was somewhat noticeable with the original power board. When I changed out the original power board with an x-pin board, it was much worse. Cleaner voltage is actually showing other problems with older boards.

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Much appreciated Andrew. This helps. I did purchase the newer amps (TDA2003A) just in case replacing the caps doesn't help. There are 2 amps on a PinBot sound board but only one has a tantalum cap next to an amp leg. I cant read schematics but I can test and replace most items. It's sort of like remolding a room in your house. I plan on taking the main board out to replace older parts but then see another possible thing to replace - and another order