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Hi,
A few years ago my Power Supply for my Emachines 270 went bang and smoke came out. After searching many forums I had decided that we needed a new Power Supply. Yesterday, I got one with the correct specs for the computer and attempted to install it. I have triple checked that all the wires are in the right place and I am adamant it is installed properly. When I plugged it in and turned it on, the computer didn't start. There were no lights, or fan's on anywhere.

Is there a fault with the new PSU or has the past Power Supply damaged the motherboard too? And is there a way I can find out where the fault lies?

Please answer quickly so I can determine whether to refund it or not before my returns time runs out

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Last Post by johhny-marshal
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The Power Supply is a bit small for the case, I don't think it makes a difference but in case it does, there you go

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Yes it is possible that your motherboard is damaged. There is no specific information that can be provided to you to make that determination. When it comes to hardware repair, it usually diagnosed by swapping out parts. With the cost of the components, I am not aware of anyone that spends the time and uses tools these days to find the actual cause of the fault and repair the actual components themselves.

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Please dont take this the wrong way... but on the back of the power supply, there should be a switch with a "0" and "1" on it... make sure the switch is in the "1" position. New power supplies almost always come in the "0" position. Double check that before you decide it's the motherboard or any other parts.
When you turn the switch on, regardless if your motherboard is fried or not, you should at least have lights on your optical drive, and you may be able to hear the hard drive(s) spinning up.

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A few years ago my Power Supply for my Emachines 270 went bang and smoke came out.

giving the time I would remove any addin cards and the memory clean connection and replace ,and as stated above maker the psu's on off switch is on .

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Well..kian, it might happen that motherboard got damaged with the power supply. You need to checkup and then try seitching on with the PSU

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