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I tend to swap out the electrolytics in a recap and leave the film or metalized paper caps alone if they are good. Some among us have experienced blown filter caps near the power input on the original Macintosh analog boards, specifically these Rifa caps: C33: 4700pf 250VAC Minibox (sometimes found to be 2200pf?) C37: 4700pf 250VAC Minibox (sometimes found to be 2200pf?) C38: 0.1uF 250V Minibox The stock Rifa caps all appear to be metalized paper capacitors. A directed replacement for C33 and C37 would be the KEMET PME271YA4470MR30, also metalized paper. But