Many PSU failures in CCR1036

[godel0914]

For power regulation, capacitor with larger voltage rating and larger capacitance usually work better, for example, to better smooth ripple.

Sure, all else being equal, but all else is not equal, because you’ve got a fixed area of PCB space to install it in. Greater capacity and higher voltage tolerance in the same space must trade off something. TANSTAAFL.

My bet? ESR.

I just replaced my C1442 / C1443 with a little bit larger capacitance and voltage rating Japanese capacitors. 16V / 1000uf. (Original 6.3V / 680uf)
It works very well, my “health” voltage rises up from 22.0-23.00 Volt to very stable 23.8-23.9 Volt.