Its just a basic (but still good performing) zener based series regulator. I really don't think you will see any difference in regulator noise levels through increasing the caps, My advice would be to stick to the original values but ensure the caps fitted are good quality low esr types. The only possible improvements might (and its more for the satisfaction of doing it) come from adding small series networks of say 0.1uf and 0.25 watt 1ohm carbon or metal films across C26 and C28 to counter the rising self inductance of the electrolytics at hf.
The secret with any mods like this is to know your enemy and that really means scoping the rails at their destinations and seeing what if any problems are present.
The secret with any mods like this is to know your enemy and that really means scoping the rails at their destinations and seeing what if any problems are present.
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