Hello guys,
I've had this XFX power supply for a long time, and recently it started behaving like one of these Seasonic X units.
TL;DR: I have to flip the on/off switch multiple times in order to startup the power supply (once it starts, it works great). I need to do this when I shut down or put in standby the PC.
From the previously linked thread, I found this helpful advice:
Therefore I decided to take apart the unit and investigate on the issue.
You can find HQ pictures of the boards here.
A first visual inspection did not reveal any defective/bad components. I then tested the single components on the entire board looking for a short/bad behavior, with no success.
Finally, following ChaosLegionnaire's suggestion, I decided to plug it in, connect to an old motherboard and measure the signals with my oscilloscope.
Strangely enough, I can find the following pattern on every output (and also ground!, that's why it is weird) I place my probe to.
These "oscillations" have a duration of about 2us and each one is visible 7.6us after the previous one. The maximum measured voltage is about 0.6V.
Is all of this normal/has it something to do with the aforementioned issue?
I've had this XFX power supply for a long time, and recently it started behaving like one of these Seasonic X units.
TL;DR: I have to flip the on/off switch multiple times in order to startup the power supply (once it starts, it works great). I need to do this when I shut down or put in standby the PC.
From the previously linked thread, I found this helpful advice:
Originally posted by ChaosLegionnaire
View Post
You can find HQ pictures of the boards here.
A first visual inspection did not reveal any defective/bad components. I then tested the single components on the entire board looking for a short/bad behavior, with no success.
Finally, following ChaosLegionnaire's suggestion, I decided to plug it in, connect to an old motherboard and measure the signals with my oscilloscope.
Strangely enough, I can find the following pattern on every output (and also ground!, that's why it is weird) I place my probe to.
These "oscillations" have a duration of about 2us and each one is visible 7.6us after the previous one. The maximum measured voltage is about 0.6V.
Is all of this normal/has it something to do with the aforementioned issue?
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