What exactly are oscillations in a switched mode power supply, and what kind of problems can it cause?
I do have
a small 200KHz range scope -will it suffice, and what should I look for when testing the outputs?
Regarding the changed values, as described
here, which you indicate is OK.... Here's a list of the original values and their replacement values:
C6 120uF/400V (150uF/400V replacement)
C7 10uF/400V (same replacement)
C15 1000uF/16V (1500uF/16V replacement)
C16 1000uF/16V (1500uF/16V replacement)
C14 2200uF/16V (4700uF/16V replacement)
C13 4700uF/16V (same replacement)
C17 680uF/16V (1500uF/16V replacement)
C18 680uF/16V (1500uF/16V replacement)
C19 100uF/10V (same replacement)
C23 22uF/25V (10uF/50V replacement -not a typo!)
C20 3.3uF/50V (10uF/50V replacement)
C26 4.7uF/50V (10uF/50V replacement)
C8 100uF/25V (220uF/50V replacement)
C24 220uF/25V (same replacement, but 50V)
The article also lists a SSP6N60 (600V 6A 1.8R N-MOSFET) which I'm guessing means that Q1 (MTP6N60) should be replaced by it.
What might the reasoning be behind all of these component changes, and is it safe?