3 missing CE from SafePower PK-400

ci139

Joined Jul 11, 2016
1,898
is it "why are they missing" or "they dropped off / exploded - can't find them"

in the first case these are the optional places to mount the capacitors when there are variations of components for the board manufactured
e.g. the 470uF cap is formed from 220uF + 220uF -- also if the board is unstable then they set in the additional filter capacitor -- or other alike causes for the PCB not being compiled as it's "marked"

in the second case you need to find the name values and possible causes of their failure - before replacement !!!
if it's a long term excess heat buy a more powerful supply or reduce the loading on this one
if it's internal chemistry degradation -- they likely used poor quality components -- the other capacitors of the same manufacturer may be soon failing -- replace them all(critical for board to function)
 
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