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There may be stored some energy in a capacitor.Try to put a load on it, e.g. an 1k resistor.Photos of the inside may help understanding how it works.
why does my psu behave like shown in a video
Quote from: Hrvoje_CRO on November 09, 2024, 02:19:22 pmwhy does my psu behave like shown in a videoBroken. My YaXun PS-1501A from the times of before Noah's ark slowly goes down to 0 when turned off. That's what yours should be doing. Most likely some caps are bad on yours. Easy to check visually. If nothing seen visually, LCR or replace everything.