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Old 02-25-2020, 10:24 PM   #15
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Default Re: Troubleshoot swtichmode power supply with DC Bench Power

Originally Posted by R_J View Post
The large 83f/450v is likely ok and will last a long time
If the PSU has an APFC circuit, I suggest to be careful, as cheap cap brands tend to not stand the abuse of APFC too long (especially CapXon.) Also, if there is an APFC circuit, I suggest minimum 420V caps, and 450V as the norm.

The fact that this PSU does have a 450V main cap will probably help it a bit. But if the cap isn't too expensive, I'd replace it with a known good Japanese brand 105C cap.
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