Monitors How susceptible are monitor power supplies/adapters to voltage fluctuations ?

PoBoy

PoBoy

Skilled
I live in Mumbai where the power is quite stable, touch wood. I've never had to replace a monitor power supply.

However some of my friends/relatives who live else where have faced this problem.

Computer components in general are susceptible to voltage fluctuations, so relatively speaking, how susceptible are monitor power supplies?

So if one is buying a pre-owned monitor is that something to keep in mind ?
 
PoBoy said:
Computer components in general are susceptible to voltage fluctuations
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Anything connected to a good quality psu shouldn't be affected by mains voltage fluctuation assuming the person isn't using a ups/inverter either which is highly unlikely for someone already having a good psu.
 
PoBoy said:
So if one is buying a pre-owned monitor is that something to keep in mind ?
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Yes, but more so if the monitor has an internal powe supply. Some manufacturers tend to skim on this which can lead to early failures and made worse if the users power is not stable.
 
PoBoy said:
Computer components in general are susceptible to voltage fluctuations, so relatively speaking, how susceptible are monitor power supplies?

So if one is buying a pre-owned monitor is that something to keep in mind ?
Click to expand...

Always connect anything and everything through a surge protector. These are cheap and I have a few dozen of them: https://www.amazon.in/GM-Modular-3012-Travel-Universal/dp/B008LQOZ2E/

Also, try and buy a monitor with an external power supply, that would be much easier to replace than to try and repair one with an internal power supply.
 
I have a mains "protector" device (Accurex brand DX 9050) and use power strips , and a whole-home Luminous sine wave inverter in UPS mode, thats all. No stabilisers or individual dedicated UPSes. So technically it supposed to protect for sudden over/under voltage spikes/dips but not from fluctuations within a certain range, and there's regular fluctuations in my locality. Sometimes the protector device kicks in by cutting the power and inverter kicks in while there is no actual electricity supply cut so I presume it's working as advertised.

All my home gadgets, monitors, TVs, sound systems, computers, fridge, smaller devices like routers/modems, Raspberry Pi, mini PC/Router PC, even phone chargers have been working fine (touchwood here too!) all along, been many years now.
 
rsaeon said:
Always connect anything and everything through a surge protector. These are cheap and I have a few dozen of them: https://www.amazon.in/GM-Modular-3012-Travel-Universal/dp/B008LQOZ2E/

Also, try and buy a monitor with an external power supply, that would be much easier to replace than to try and repair one with an internal power supply.
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There seems to be another, cheaper
Wipro 3 Way Multiplug Adaptor with 1 Universal Socket |Inbuilt Surge Protection

EDIT : might get this, but mainly for when I travel. Some of the places I go to have crazy power cuts and fluctuations.

Don't know how I missed/forgot what @Heisen posted, post #6.
 
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The Wipro one has a looser connection compared to the GM one, but you'll need see if it fits better with your specific plug.

I haven't had any failures to devices connected with these, we have crazy fluctuations due to religious or wedding processions in our area that illegally tap into the electricity poles for power.

Like right now on a Sunday evening, we have high voltage at 253V. I've seen it go as high as 290V.

Tracer_Bullet said:
How does this compare to surge protection ( through fuse ) in anchor Extension boards ( Mumbai ). It does seem to work, fused once when i tried to run vaccum cleaner through it.
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It works well for surges, I've had three that died while protecting other equipment over the last few years.

Fused power strips are good for over current protection and short circuits, these are faults that happen with a faulty appliance or power supply. Surge protectors deal with irregular supply from the electricity company.
 
rsaeon said:
It works well for surges, I've had three that died while protecting other equipment over the last few years.

Fused power strips are good for over current protection and short circuits, these are faults that happen with a faulty appliance or power supply. Surge protectors deal with irregular supply from the electricity company.
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ok thanks, so its better to have both. In mumbai, i don't think i have ever had an issue, but ill add this anyway.

Does this cause extra power usage? I think i read that stabilizers can lead to some power inefficiency.
This is different thing ofc, i am guessing this one doesn't ?

thanks for info. ~200 rs for something like this is a no brainer.
 
They don't use more power. These surge protectors just have a metal oxide varistor wired in parallel across L and N. That's it. The MOV doesn't conduct under normal conditions but when the mains voltage exceeds a threshold value, it will start to conduct and shunt the power through it, hopefully saving your devices. More expensive/complicated ones will have more MOVs and have them wired across ground as well. Because they're in parallel, a single surge protector should protect the entire circuit that the outlet is connected to. It doesn't offer much protection against a lightning strike or a huge voltage spike. But for small surges, they should do the job.
Tracer_Bullet said:
How does this compare to surge protection ( through fuse ) in anchor Extension boards ( Mumbai ). It does seem to work, fused once when i tried to run vaccum cleaner through it.
Click to expand...
That's not surge protection. That's short circuit protection. That's what your MCB does. They're tripped by current, not voltage. It won't help in a power surge at all. Not even a little bit.
 
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