Power Supply Unit

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mthatcher206563

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Hi everyone,

I am doing a quick repair for a friend,

The graphics card is not giving out a signal and also the power supply is making quite a bit of noise,

What should I do? and also the psu has an input of 220v, not 230v, could this have an effect, (The pc is from a different country - Thia-wan - Can i put a psu in there that has an extra 10 volts input?

Thank you for any answers.
 
Solution
hunter315
A 220V line and 230V line are pretty same close as far as the PSU is concerned, a power line is generally allowed to sag by up to 20%, you hope it doesn't but a 20% drop is still in spec. Generally the difference between 220, 230, and 240 is just terminology in the area, you will hear people refer to US voltage as 110, 115, or 120, they are all referring to the same power line voltage. Your PSU is designed to deal with non-ideal power lines, it won't care if the RMS voltage is down 10V, it is still supposed to work with that.
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mthatcher206563

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So if i live in the uk and had a power supply that needed 230 and not the 220, would this damage the components that were bought from Thailand, or would you recommend finding a psu with an input of 220?
 
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James Mason

James Mason

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[strike]Oh if you live in the UK then you need a 230v power supply, which you could get at any electronics store there easily, as thats the standard for your entire country, just have to make sure the switch on the back of the power supply is set to 230v[/strike]
nope I was wrong:
http://www.doityourself.com/forum/electrical-ac-dc/299085-220v-230v-240v-same.html#b
it should all be the same, you likely have a faulty powersupply though, so you need a new one anyways.
 
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mthatcher206563

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Im sorry, im getting confused now.

So i can replace a 220V PSU with a 230V PSU and it will still work?

and this would be because the PSU input is less than 240v and but more than 230v?

Sorry to sound stupid
 
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hunter315

hunter315

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A 220V line and 230V line are pretty same close as far as the PSU is concerned, a power line is generally allowed to sag by up to 20%, you hope it doesn't but a 20% drop is still in spec. Generally the difference between 220, 230, and 240 is just terminology in the area, you will hear people refer to US voltage as 110, 115, or 120, they are all referring to the same power line voltage. Your PSU is designed to deal with non-ideal power lines, it won't care if the RMS voltage is down 10V, it is still supposed to work with that.
 
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Solution
hunter315

hunter315

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Nope, but honestly you shouldn't be buying a PSU that says a single voltage, you should be getting a modern unit that actually has Active PFC and an efficiency rating. One of the side benefits of Active PFC implementation is full range input voltage, a PSU with it will accept any input voltage from 96-264V
 
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mthatcher206563

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The psu that i will be using came with my case from when i built my pc (Made by CiT, I had a budget at the time but have changed it since)

So overall the input may be different but the output to the components is done at the same.
Interesting

Thank you so much for your help
 
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