Hi all!
So some of you may remember several months ago (maybe a year already?) that I was having issues with my desktop PC shutting down randomly with no warning for no apparent reason. After replacing parts one-by-one, running software checks, etc, I eventually decided it was probably an issue with the PSU. Well I just recently started having problems with my desktop again so I finally broke down and bought a new one this afternoon. However, I'd like to test my old one to see if I can figure out what caused the problem. My question is this: How does one go about testing an ATX power supply using an oscilloscope? Unfortunately I don't have one of those fancy digital ones, all I've got are my scopes from back in the late '70s--analog CRT, one digital storage, the other not. What would I be looking for on the output? I expect I'd be looking for ripple and noise (perhaps something has gone past the filter caps, which I just replaced recently), but I'm not sure what levels of noise/ripple are normal, and what is unexpected. Has anyone here done this sort of testing, and might you have some tips/recommendations? Any thoughts are appreciated!
Regards,
Matt
So some of you may remember several months ago (maybe a year already?) that I was having issues with my desktop PC shutting down randomly with no warning for no apparent reason. After replacing parts one-by-one, running software checks, etc, I eventually decided it was probably an issue with the PSU. Well I just recently started having problems with my desktop again so I finally broke down and bought a new one this afternoon. However, I'd like to test my old one to see if I can figure out what caused the problem. My question is this: How does one go about testing an ATX power supply using an oscilloscope? Unfortunately I don't have one of those fancy digital ones, all I've got are my scopes from back in the late '70s--analog CRT, one digital storage, the other not. What would I be looking for on the output? I expect I'd be looking for ripple and noise (perhaps something has gone past the filter caps, which I just replaced recently), but I'm not sure what levels of noise/ripple are normal, and what is unexpected. Has anyone here done this sort of testing, and might you have some tips/recommendations? Any thoughts are appreciated!
Regards,
Matt