Question about Sony VAIO K45 Notebook

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PCG-K45: No Power: Internal component issue.

RCA DC in jack was replaced on motherboard. Cables to motherboard are good. Power LED works fine. I need to find out what the card the battery plugs onto the motherboard is called? Been told this might need to be replaced, but any other ideas would be greatly appreciated. Thanks!

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  • Anonymous Apr 22, 2008

    im trying to replace the dc jack on the motherboard but im having problems take it apart to get to the mother board. I took out all the screws and it wont open. how do i open my laptop for my sony vaio pcg-k45

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Hi,
The Power Charging Board Is Usually Known As A PWS Board.
It should have a model Number Stamped On It. you type this into a blank webpage and do a search. this will give you the model Number i.e PWS 13 OR PWS 15 et,c.

Mike @ Compurepair.

Posted on Jun 22, 2008

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Plugged in, not charging


There are 4 things this could be:
1.) There may be an issue with your outlet/power strip. Try plugging the power cable into a different outlet.
2.) The power cable's brick (that box-like component in the middle of the cable) may have gone bad. Some bricks will have a green LED on them to show when they are operating properly. If the LED is OFF, you need to replace the power cable. If it's ON, the cable is probably OK. If there is no LED, test with a multi-tester.
3.) Your battery may be bad and, therefore, cannot charge. The steps to test this are below (after #4).
4.) You're DC jack (the part inside of your laptop which the power cable plugs into) has broken solder joints due to too much tugging of the power cable over time. The steps to test this are below.
For issues 3 and 4, try the following: 1.) Remove the battery, 2.) Plug the power cable into the laptop, 3.) Try to turn ON your laptop.
If your laptop can power ON, then the power cable and DC jack are working fine and your battery needs replaced. If checking the brick's LED (Issue #2) has proven the power cable is fine, AND the laptop does not power ON, then you need the DC Jack resoldered (PC shop).
I hope this is helpful and best of luck!

Sep 21, 2011 | HP EliteBook 2530p Notebook

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No power! power cord is good, but when inserted in the charging jack(laptop) the inside is loose and no charge is being sent to the battery. How do I replace the inside thing so power can be sent to the...


Here below is a guide about how to repair laptop DC jack, may it will help.
http://www.laptoprepair101.com/laptop/2007/12/06/dc-power-jack-repair-guide/

Jan 20, 2011 | Balance Computers & Internet

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Electric current does not get through from the adapter to the laptop. the led light does not turn on but the adapter's led light does.


DC Jack diagnosis:
1. Test power adapter for output voltage. Bend the power cable in various directions while doing this to be sure that there is no broken conductors in the cable.
2. If power adapter is Ok, connect it & see if the power LED on the laptop will glow when you jiggle the power connector in various directions. If yes, then the DC jack might be loose or damaged, & need to be either re-soldered or replaced.
3. If not, then disassemble the laptop. Remove any components that attach to the laptop's motherboard first (e.g. battery, hard drive, RAM, wireless card, optical drive, ... etc.)
4. Next, remove the keyboard & the LCD screen.
5. Finally, unscrew all screws that hold the upper cover & lower cover together so that you could gain access to the motherboard.
6. Inspect the solder points connecting the DC jack to the motherboard. Make sure that none of them is loose. If any, re-solder them.
7. Inspect the center pin in the DC jack. Make sure that it is not broken or loose. If it is, then you might need to replace the DC jack.
8. When you are done, re-assemble back the laptop.

Oct 13, 2010 | Acer Aspire 4315-2963 Notebook

1 Answer

Cannot power up or charge battery. Power supply is working. Does the power receptical commonly break from the motherboard?


DC Jack diagnosis:
1. Test power adapter for output voltage. Bend the power cable in various directions while doing this to be sure that there is no broken conductors in the cable.
2. If power adapter is Ok, connect it & see if the power LED on the laptop will glow when you jiggle the power connector in various directions. If yes, then the DC jack might be loose or damaged, & need to be either re-soldered or replaced.
3. If not, then disassemble the laptop. Remove any components that attach to the laptop's motherboard first (e.g. battery, hard drive, RAM, wireless card, optical drive, ... etc.)
4. Next, remove the keyboard & the LCD screen.
5. Finally, unscrew all screws that hold the upper cover & lower cover together so that you could gain access to the motherboard.
6. Inspect the solder points connecting the DC jack to the motherboard. Make sure that none of them is loose. If any, re-solder them.
7. Inspect the center pin in the DC jack. Make sure that it is not broken or loose. If it is, then you might need to replace the DC jack.
8. When you are done, re-assemble back the laptop.

Oct 03, 2010 | HP Pavilion ze4420us Notebook

1 Answer

Asus f80 can't start. when connect to power adapter no activity on notebook, no power led etc. led on power adapter ok.


1. Test power adapter for output voltage. Bend the power cable in various directions while doing this to be sure that there is no broken conductors in the cable.
2. If power adapter is Ok, connect it & see if the power LED on the laptop will glow when you jiggle the power connector in various directions. If yes, then the DC jack might be loose or damaged, & need to be either re-soldered or replaced.
3. If not, then disassemble the laptop. Remove any components that attach to the laptop's motherboard first (e.g. battery, hard drive, RAM, wireless card, optical drive, ... etc.)
4. Next, remove the keyboard & the LCD screen.
5. Finally, unscrew all screws that hold the upper cover & lower cover together so that you could gain access to the motherboard.
6. Inspect the solder points connecting the DC jack to the motherboard. Make sure that none of them is loose. If any, re-solder them.
7. Inspect the center pin in the DC jack. Make sure that it is not broken or loose. If it is, then you might need to replace the DC jack.
8. When you are done, re-assemble back the laptop.

Sep 21, 2010 | ASUS F80Q-X2AM Notebook

3 Answers

How to replace power jack on sony vaio pcg-k33


Short version?

1.Remove the AC adapter if plugged in, remove the battery.

2.Wear an ESD wrist s-trap, and have it connected to a good ground. Work on a table, have a container with multiple compartments for the screws, and mark where each screw came from. There are as many as 65 screws, and 8 different sizes.

3.Completely disassemble the laptop, down to the bare motherboard in your hand. Remove the LCD screen assembly. No Processor, Cooling Tube, Heatsink, Ram Memory modules, CD/DVD drive, Harddrive, Wireless Antenna module, Keyboard, Nada!

4.Buy a replacement DC Power Jack.
Here is an example of one,

http://powerjack.us/index.php?main_page=advanced_search_result&search_in_description=1&keyword=Sony+Vaio+PCG-K33

5.Use the correct tools.
If you're a really experienced tech, you can use a 30 to 40 Watt soldering iron. No.2 tip. Have a clean damp sponge nearby, to constantly clean the tip.
Make sure the tip is clean and tinned correctly.

Or use a medium priced soldering station.

I advise using soldering wick, (Desoldering Braid), instead of a Desoldering Tool. Works much better.

5.Use the correct soldering procedures.

Linger too long when heating up the solder joint, to remove the DC Power Jack, and you stand the chance of burning the board. (Motherboard)

Also could lift the Circuit Trace right off of the board.
(Circuit Trace may be thought of as a very thin, copper wire on the motherboard. It isn't, but this explanation will do)

Do any of the two errors above, and you can use the motherboard for a Frisbee.

My method for removing the DC Power Jack, is to pull up on one lead at a time. Use constant pressure with my finger, and thumb. (Don't get 'Godzilla' on it. It can break. Everything has it's limits!)

I heat the solder joint for that one lead, and try to pull it up, a little out of the board. Then I move over to another lead, heat it, and pull up slightly on it. Keep moving from lead to lead, until finally they start pulling out.

After the jack is removed, the area needs to be cleaned. I use 90 percent Isopropyl Alcohol, and Q-tips.

CAUTION!!!!
This is HIGHLY FLAMMABLE! Keep it away from that hot soldering iron, and use in a Well ventilated area.
Always immediately return the cap to the bottle, and tighten the cap well.
Have fire precautions ready, just in case an accident happens.
Better Safe, Than Sorry!

The area of solder, around the hole in the board for the jack, may need to be buffed off. (Fine sandpaper in a tight roll, or a fingernail file using the fine side)

All areas that will accept solder need to be clean, and tinned.
Tinned, ...is the area is cleaned, a light spot of flux is touched around the rim of the hole, then solder is applied. The hole's rim then has fresh solder around it, and is ready to accept the DC Power Jack lead.

Be sure you have good solder joints! You may not see a cold solder joint, until you put the laptop back together, and the jack doesn't work. Then you get to take it all back apart, look at your solder joints, and go "OH".

This may help you in disassembling,

http://www.insidemylaptop.com/disassemble-sony-vaio-pcg-k-notebook/

Oct 19, 2009 | Sony VAIO PCG-K33P Notebook

2 Answers

Dell d600 will not power up. When connected to AC power the green led will go out. Is this a jack problem or a internal supply or what???


well, if you try more than one wall outlet and you have that issue, it is possible that you may have a bad plug. you can always buy a power supply at radio shack or best buy. and test it. or the best solution is go to a local computer repair shop, i'm sure they have plugs to try and see if it powers up.

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Vaio will not turm on


you will most likely need to replace the dc jack, which is the port where your charger plug plugs into...

To test if your dc jack is bad... Remove the Battery, Plug the Power cord into laptop then attempt to power on... If no lights turn on, no fan spins.. your DC jack is bad...
DC Jacks Cost $6 to $10 but you need to find someone experienced to replace it, or you might end up with a dead motherboard as well..

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5 Answers

No power when i start vaio pcg k45


Recheck the small flat cables coming from the power button panel to the systemboard.

Jan 23, 2008 | Sony VAIO K45 Notebook

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