Question about Sony VAIO PCV-J200 PC Desktop

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Power supply all the cables are connected.if the psu was dead, would it still be blinking wen connected to the mains?should i replace the cables again?

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  • johnderrick Sep 08, 2008

    finally managed to get it on.i disconnected the power supply to the motherboard,plugged in the psu to the mains,reconnected the motherboard power supply with the psu still on and voila!!so how do i fix this problem beacause when i shut down and boot,it starts blinking again.

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It is blinking because its drawing power still. The problem is putting it out. a SIMPLE CHECK TO SEE IF ITS DEAD IS DOESYOUR CD DRIVE OPEN? IF IT DOES LEMME KNOW IF IT DOESNT ITS DEAD
sorry boutthe caps

Posted on Sep 08, 2008

  • Benjamin  Bielski
    Benjamin Bielski Sep 09, 2008

    That helps but i need to know, does your cd drive open?

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What is a PSU?


psu or PSU is an abbreviation standing for Power Supply Unit. This is often a device (box) which converts your mains supply (input) into the voltages (with currents) which are correct for your device (eg your printer). This may be inside the case (eg in a computer) where you cannot see it, and you just plug in the mains lead to the device, or an external box which has two (or more) cables or connections to/from it, one or more of which is connected to your devise (eg a laptop computer). Printers may have either depending on the model. Every model of device has its own model of PSU (or family of suitable PSUs). Just any PSU will not do and might damage your device
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My computer wont start up. The power supply light flashes green when plugged in then red. But still nothing , can someone please help?


Try a Power Supply Unit (PSU) Reset: Unplug the electrical cable from the wall and the PSU (Back of Computer)
Move the red voltage selector to the opposite position it is in and then slide it back. If you live in the USA 120Vac to 220Vac back to 120Vac
After you have done this you can plug the power cable back into the PSU. Connect the power cable to the wall power. If the PSU is still serviceable it will no longer be blinking.
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I guess your power supply died. try to disable the power supply and enable it again (switch behind the tower) otherwise you should get it checked out by a professional.

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Switch PSU between bays Use spare PSU
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No power PC is dead tried a spare power supply and PC works.. Green led on rear of power supply blinks all the time.when disconnecting 110v ac plug light then dims still blinks but slower then goes...


the original psu is dead toss it. the one you are using is not powerfull enough to run the pc. check the old opne for how many watts. then check the new one. i bet the new one has fewer. so to solve problem get a psu with the same or more watts than the old dead one.

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My computer wont turn on


take out the psu completely from the cpu/tower, plug in the power cord,if there is a switch on the psu turn it on, next locate the main power connector (24pin) and find green wire,take a piece of wire and insert it into the green wire connector,next touch the other end of the wire to the psu outer case or a black wire on the main connector,if all is well the psu will turn on,if you have a dc voltage tester check the voltages on the red and black wires on molex connector...5vdc,yellow and black...12vdc.if ok look at the main board and inspect the capacitors to see if they are swollen, if ok
replace psu and disconnect hdd,cd/dvd,floppy ect from main board only leave memory,processor and video, power on if ok shut off and reconnect hdd, power on, if ok shutoff and connect floppy, if ok power off and connect cd/dvd drive.during this testing you will know what is bad.let me know how it turns out.email; arjoon.ken@gmail.com

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HP won't power on at all~PSU light blinking, then solid, then off


Dead short on the machine causing the power supply to go into shutdown (Fold Back Protection)

Remove all of the connectors coming from the power supply (Label them so that you know here they go back to on the Motherboard and the DVD etc (Including the processor fan one)

Place all of them back one at a time starting with the main one if the led stays on then plug in another till you locate the short.

If the led dies when you plug in the main MB connector then you are in deep brown stuff

All you can do then is to remove the Ram and any other unpluggable device to see if that is the cause

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The cable light on my modem keeps blinking for long periods of time and won't let me axcess the internet


This would indicate a problem with the cable connection, modem,or your ISP

Try replace the cable that comes from the RF connector to the wall outlet (use a good quality one)

Also if you have ANY form of splitter / divider in that line that was not supplied by your ISP for splitting a modem signal then remove it.

Check the output of the power supply for the modem if the psu is faulty then replace with a universal adaptor that can supply both the correct voltage and current (they are usually listed on the original psu eg. 9V 500mA)

DO NOT use any psu that cannot meet those two numbers a 300mA supply will not be suitable but one that is slightly higher eg. 650mA will.

If you still have problems then contact your ISP for a replacement.


If this information was of any use please click below

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1 Answer

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Apply a new PSU, the question is is it worth it to you? A psu is rather expensive to replace I would not try repairing it if I were you.

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I read all the solutions, followed the manufacturers instructions exactly, replaced the cmos battery and nothing solved the problem (blinking light on PSU after a power failure and no startup at all). I had ascertained that the PSU was intact by disconnecting all the PSU connections to drives and motherboard at which time the PSU LED stopped blinking and was constantly on.
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