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I powered my new PC up but the selector switch at the rear was still on 115V, not 230V. There was a small 'pop' and it won't switch on now. Have I damaged it, or just blown a fuse?

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Change the switch to 230V and power on your system If the system does not ON then the SMPS might be damaged(It might be fuse or power transistor damaged). As your system is new one you will have warranty so replace your SMPS with new one.

Posted on Nov 05, 2008

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Lenovo desktop PC Power supply probems after changing voltage setting from 230V - 115V


If your country uses 240V mains then flicking the switch to 115V bypassed a voltage divider and probably blew the fuse in the power supply. If you are comfortable working with mains voltage, you can pop the PSU open and check the fuse. If it's blown then just get another one with the EXACT same ratings and you should be up and running again.

If it's not the fuse then you have bigger problems and it's time to replace the PSU. Any PSU should work as long as the wattage is the same as the original or higher.

Also, you could call Lenovo to see if the PC is under warranty. If so, the PSU is probably a user replaceable part, meaning they will send you a new one to put in and you just send the old one back.

Jul 13, 2013 | Computers & Internet

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My computer will not come on , it is plugged the screem is in power save , it sound like it's dead, I have no solution can you help


Check the power supply first to make sure it hasn't gone bad. Note: I had a case where somebody changed the input voltage from 115V to 230V. It did not work on a 120 Volt outlet until I discovered the red slide switch on the back of the power supply was in the wrong position. Maybe somebody thought it was an on/off switch. It isn't often that people get off so easily, but it's worth a look.

(The voltage setting switch is next to the power cord socket, is generally recessed slightly so it's hard to mess with it. Usually it's colored red, but is sometimes black, and is always marked 115V in the correct position for U. S. operation. If it reads 230V that is the problem, unless you are outside North America and using 230 Volt power. In that situation setting it to 115V may cause major damage.)

Nov 04, 2010 | Computers & Internet

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I bought two numark ttx usb turntables of ebay with no warranty, they were from the usa. one of the turntables works fine the other did not even turn on at all. i thought it must be that i did't flivk the...


Here is a copy paste from Numark's Quick start owner manual page 3:
3. Voltage Selector:
This switches the internal voltage transformer between 115V, 230V and 240V. The turntable should be shipped with the proper voltage setting for your region. Check that the switch is in the proper voltage before connecting the power cord to prevent damage to the turntable.
At page 2 also there is a diagram showing the exact place for that switch.
So I can't believe that this turntable is stricted for use under 115V. Also, as far as I know from my experience (23 years Electronics Engineer), the only thing that coulg be before the transformer is either the voltage selector switch, or some kind of ac filter. The only case that I'm not sure, is the case that you powered up the turntable at a 230V area and the Numark's voltage selector was set at 115V. In that case the transformer should be burned and the service should replace it and charge you the cost for that.
I think that there is something strange at your case. Why don't you check at another service center at your area?

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Power problem .... tried 3 different power supply cords...the green light on the rear blinking meaning???? pushed switch on front ...held in.....no response only moved from 1 office to another....always...


was it dropped..?? the indicator light should b solid not flashing.. If you held the power switch in for several min an nothing Try plugging the cord directly into the wall. Do not use power strips as they may have failed.Toggle the voltage regulator switch from 115V to 230V then back again. If you are in North America, this switch must be on 115V. you may have a loose connection in the machine Lastly, you may need to go inside the case and confirm the thin wires running from the front power and reset switches are connected to the motherboard., to check be sure u are grounded an check all connections inside the computer... If the LED is still flashing, the power supply is probably bad.

Apr 28, 2010 | HP Pavilion a350n PC Desktop

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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

My computer when in 115v it turns on and then immediately off


Switch the power button on the rear of the supply back to 115V.
Have someone remove the supply and replace with the same.
Sometime, just disconnecting the supply connections at the motherboard and re-connecting them, resets the supply.
I would go that rout first and go from their.

Sep 25, 2009 | Computers & Internet

1 Answer

My motor is wired for 230v and I need it to be 115v


It should be. Look closely at the motor nameplate and you should see a small diagram telling how to connect the motor for 115v or 230v. Most newer pumps have a small selector of some sorts. Either a plug that pulls off a couple post the include an idicator arrow for where to set the plug for either voltage, or a dial you turn to show it. Either way, you should be able to set the motor for 115 rather easily.

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1 Answer

Compaq presario sr1115cl wont power up


dont u dare ever use 220 line on thes eon usa power u blow it ever time u turn it on at 220 v dont u dare do that not no reset switch erther u must now buy new power supllly ok

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Compaq presario sr1115cl wont power up


Remove the power supply after everything is unplugged and take it to your nearest electronics store. They should have a tester there. This is probably the problem.

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Sony VAIO VGC-RB50 No Power


Most likely you have a problem with your power supply. First off make sure your Input voltage selector switch is properly set. This switch should be located next to the power cord. In most cases it is red in color, and will have "115V" and "230V" printed on the switch. I have seen red switches and black switches, but mostly red. I you live in the US, you should see "115V", Europe is "230V". Before flipping the switch, unplug power cord.

Since the light is blinking, you are getting power to the power supply. The power supply might be bad, and you need a new one.

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