Question Is it necessary to turn my PSU switch off after shutting down PC?

[Ryflick]

Heya all, just want to ask this to clarify is it necessary to switch off my Power Supply after I'm done using my PC?

Well because I live in South East Asian country (Indonesia), my electricity here is very unstable (rated 220-230V, but it often drops to 160-ish), hence why does it necessary to shut down my PC and turning off my Power Supply switch even though I'm using a full-range 110-240V Power Supply?

I'm afraid due to the unstable electricity it could potentially damaging one of my components or even my PSU itself.
And also fact-checking to see if it is necessary to do it or not, or maybe should I just use AVR instead?

Thanks!

 

[Lutfij]

Shutting off from the power strip or the wall outlet should be more than enough, if you don't want the system from drawing power vampyric style(they still draw a small amount of power from the wall, this is why you're able to power up the system even after a shutdown, this is standby power).

I would turn off from the wall, if I were you. Power surges can be the root cause of premature parts failure.

 

[Murissokah]

Modern PSUs should handle brownouts well (input voltage drops). And if it happens when the PC is off, I don't see how it would affet anything. If you are worried about power quality or have a very expensive set, you might want to use an isolated UPS or AVR. Ideally a double conversion, galvanic isolated UPS, although those tend to be expensive and can be very noisy.

 

[Ryflick]

Ah okay, so shutting off through Power Strip or Wall outlet is enough then, and either using isolated UPS or AVR is fine too. Thank you both of you for the explanations and recommendation!