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Phil Allison[_3_] Phil Allison[_3_] is offline
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Default Troubleshooting RFI from switch-mode PS

whit3rd wrote:


I have ordered the two 1000uF, 200V input caps and should replace them
in about 3 days and will let you all know the results.



The input filter capacitors serve no RF function, so won't solve anything
related to RF noise.



** The OP is clutching at straws, big fat & expensive ones at that.

He ought to very carefully check the AC supply connection from his PSU to ground - any resistance there due to tarnished pins would send EMI way up.

BTW:

a portable AM-SW radio can be used to "sniff" for the source of the EMI.


..... Phil