Question about HP Pavilion 7955 PC Desktop

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Computer won't start The voltage switch on the power supply was accidently changed to 230. Is it fixable

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Most likely not, the power source is dead, replace it. It's a standard ATX source, any 400W one you can buy from all IT shop will do.

Posted on Apr 25, 2010

Testimonial: "Hopefully the power supply is the only thing fried"

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Posted on Jan 02, 2017

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2 Answers

My psu not working at all for desktop even to run the fan


Test your PSU or replace it if your power supply units fan is not working your PSU is faulty

May 02, 2011 | Compaq (176763001) 120-Watt Power Supply

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Is there more than one power switch on my dell inspiron 531S? I was working on my computer and then suddenly poof! No signs of life. Monitor working but no computer. I have tried checking power surge...


Hi, Thanks for using fixya.

Check the 230/115 switch if it is on the right voltage then I would change the power supply. Sounds scary but very easy to do. They run as cheap as 10-20 bux.

Terry

Feb 12, 2011 | Computers & Internet

1 Answer

The fuse is intact but there is no output voltage


Is the 115 / 230 volt voltage switch in the back of most units in the proper position for your country's voltage? Also, are the wires from the on / off switch on the computer tight, in the proper place. Some use a direct on / off switch that breaks the mains line directly, some use a small momentary push switch that activates a switching circuit on the motherboard.
Just some thoughts.
Good Luck.
Jeff Mc.

Feb 03, 2011 | HP PS62413CF 240Watt Power Supply

1 Answer

On the back of this power supply, Theres a red switch with the numbers, 115 and 230. depending on which way it was switched on. Can someone please explain to me what this is?


Hi inforis,
That is a setting that will change the voltages, and you do not want to flip that switch. If you do there is a chance you will fry your computer. Different countries use different voltages. It's cheaper to make a switch & some circuits inside the PSU than make a whole new one. List of countries with frequency & voltage (http://www2u.biglobe.ne.jp/~INTECS/WorldVoltage.htm)
Hope that answers you question well enough.

Dec 29, 2010 | HP ATX-300-12Z (ATX30012ZBD) 300-Watt...

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Keep burning power conversion plug on PC board I am running unit at 230 volts I have change transformer also


You should first start with converting the unit to run on 115 VAC if you can. We had a unit that went thru three ignitors, 2 selector boards, two main boards and a transformer in one summer in part because the electronics in that model are sensitive to spikes and spikes on a 230 circuit are worse than the same spikes would be wired for 115. Jandy was the source for that recommendation, not us.

Anyway, consider changing the line voltage and thoroughly inspect your main board to be certain it is not damaged. Assuming the main PCB is ok your best bet with a new part should be low voltage. Since we converted the unit we were working on it has been trouble-free.

John

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2 Answers

Ok i neeed help!!!!!!!! on my power supply there is a switch which you can move to 115 volts to 230 volts. everytime i switch it to 230 volts the computer wont turn on? why is this happening? when i put it...


This is the power supply for your PC, depend on your local country power supply, some country like North US may use 110 V in their daily use electrical stuff and some country like Euro, UK use 240 V.

Your PC power supply is design to suit this 2 type of power input so can be sold everywhere. What u need to do is to make sure your local country power supply voltage and then just switch the input correctly, i think u have done it.

YBC (/\)

Oct 20, 2009 | Computers & Internet

1 Answer

What does the red switch on the back of my dell dimendion e510 do


Don't! That's for foreign voltages. It should say 115 and 230. The 115 is for 120V systems while the 230 is for 240V systems. The actual voltage you get is usually a little less than ideal, so they design power supplies to accept a lower voltage.

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Bose lifestyle 28 no power


There's no easy way to put this. This media center will need a repair. If you know the outlet works, and the power supply works. It couldn't be anything that's easily fixable. Make sure you don't have a dual-voltage power supply (red switch for 120v/230-240v). If so, change to 120v for us power. Otherwise this is pretty straight forward. You can call bose for a repair- 800-367-4008. $165 + tax flat rate. New 1 year warranty.

Jun 20, 2009 | Bose Lifestyle 28 System

2 Answers

POWER SUPPLY UNIT


Hi, you can almost bet anything that your voltage regulator is at fault. It sounds as if this needs time to build enough resistence to reach the 240 volts required by your computer's PSU.
Change this unit and you should cure your problem.
Question, Why do you need to use a voltage regulator?
Are you running on home generator power?
If you run on mains regulated power then replace the voltage regulator with a power surge protection board.
Regards mistyman

Nov 06, 2007 | Computers & Internet

1 Answer

Power supply


Usually this will damage the power supply only. To make sure your that your motherboard is working, try to find a working power supply unit and connect it. If it does not work your motherboard may be get damaged. Also check for warranty. If your system contains a graphics card, check that too, it may also get damaged with voltage variations.

Oct 02, 2007 | ASUS P5LD2 Motherboard

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