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Power supply

By jrbigsky ·
My Child was booting his computer and while it was booting he thought it was hung up..so he flipped the reset button on the back of the computer that goes to the power supply unit...and not the reset button on the front of the computer. The computerof course shut down and when he re-started the computer all was dead,it's as if there was no power at all. Flicking all the resets and unplugging etc. has no effect it's as if there was no power at all going to the unit.
Ques. is there a fuse in the power supply that blew or did he fry the power supply or worse case the motherboard? There is no humming or anything its as if the power supply box was not even plugged in! So anyone have any clues before I waste time trying to get it fixed?

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Power supply

by timwalsh In reply to Power supply

There are fuses inside power supplies that might have blown (sometimes they are actually soldered in). However, there are also stickers on all power supplies that warn you not to open them up, for good reason. Power supplies have hi-voltage capacitors inside them that can maintain a charge for a period of time, even with no power applied. Opening a power supply will usually also void the warranty.

If you are reasonably competant with handing electronics (i.e. understand all the proper safety measures and use them), you may be able to save yourself the price of a new power supply by checking th internal fuses. However, if you are uncomfortable fiddling around with the insides of your computer in general, stay away from the power supply.

If your computer is still under warranty, talk to your vendor's tech support people. Depending on the vendor, even opening the case may void the warranty.

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Power supply

by jrbigsky In reply to Power supply

The question was auto-closed by TechRepublic

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Power supply

by Ann777 In reply to Power supply

Check to make sure that the switch in back is properly turned on then power on the computer from the front. If you do not see/hear the fan from the power supply box, then yes the power supply is bad and should be replaced. I used to replace fuses in power supplies, and while that may give you an extra bit of life (use the long-burning fuse with the same amperage), these days I really recommend that you replace the entire power supply. Sometimes the capacitors are also damaged and replacingthe fuse alone, does not get the PS to operate again.

You might also check the cord back to the outlet... sometimes the circuit at your electrical box will turn off as well. You might want to check that before replacing the power supply.

It is possible the systemboard was also affected by this, but the first step is to get the power supply fan to operate. If the fan/power works, then you should be able to tell if the systemboard was fried by this.

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Power supply

by jrbigsky In reply to Power supply

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Power supply

by phredphuley In reply to Power supply

also check voltage selector

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Power supply

by jrbigsky In reply to Power supply

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Power supply

by Edgam20 In reply to Power supply

One way to find out if it's dead, find urself a multimeter and check the plug on the back of the power supply.

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Power supply

by jrbigsky In reply to Power supply

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by RCOM In reply to Power supply

Usually there's only a on/off button on the back of the computer no reset. A little more info on voltage selector he may have switched it from 110 to 220 volts. It's usually a black or red selector switch on the back of the power supply that may resemble a reset button. Switch it back to 110V

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by jrbigsky In reply to Power supply

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