Question about Toshiba Satellite A75-S211 Notebook

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I HAVE BEEN TOLD THE MOTHERBOARD HAS COME UNSODDERED FROM "SOMETHING". I HAVE TO HOLD THE POWER JACK AT A CERTAIN ANGLE TO BE ABLE TO START THE LAPTOP UP, THEN IT WILL SHUT DOWN AFTER 10 SECONDS. CAN THE MOTHERBOARD BE REPAIRED/RESODDERED ??

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The DC jack, where you plug the power adapter cable, might be loose or defective, & needs to be either re-soldered or replaced.
In order to do this, the laptop needs to be disassembled & the motherboard taken out. Also, the motherboard needs to be checked for defective/burned out components in the area near the DC jack. Any defective/burned out components found should be replaced, or you might need to replace the laptop's motherboard altogether.

Posted on Sep 15, 2010

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Posted on Jan 02, 2017

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Acer aspire one charging port loose


If I recall this model line uses a fixed DC power jack directly soldered to the main board. When they become loose, you can visually inspect the jack itself (without the cord plugged in), and use a pen or probe to see of the center peg is excessively loose. The common result is the solder connections have been broken between the DC jack and the main board. Often the jack itself needs to be replaced (involving complete disassemble, de-soldering old jack, cleaning, repair PCB if needed, and re-solder new jack in place.
TIP - if it is not charging, remove battery, and gently put pressure from different angles with the power cord plugged in, and try to turn it on. If it turns on with pressure from a specific angle, it would indicate the DC jack is indeed loose, and likely needs to be replaced. It works becomes the pressure is making the electrical contact that has other wise been broken. ALSO, if it turns on easily, yet losses power at certain angles, its a similar issue.
TIP2 - If it still indeed charges regardless of the angle, and does not lose power, it may be a "Modular" DC jack, meaning the jack connects to the main board through a wire harness, and is less prone to breaking the electrical contacts, and the jack is simply loose inside it's retaining clips/slides. Minor disassembly and hot glue are quick fixes for this since usually the plastic clip/slide in the chassis have broke.

GOOD LUCK! :)

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I think I have broken my headphone jack on my sony unless held at a certain angle for speaker too


Lean a book on the earphone plug to keep it in the right position. Or, pay a computer repair shop to replace the socket.

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Hi when plug in my ac adapter into lenovo x61 the tablet will not turn on i try it on other computer and it will on what happen?


LOL, sounds like your tablet has seen it's better days. See why HP got out of the Tablet business? They are nothing but trouble.

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1 Answer

The dc power jack will not accept power. I have to wiggle it to get the blue light to show that the laptop is charging. My computer is the acer aspire 5920-6423. I was told it wouldn't have to soldered...


If the power/battery LED light flashes and in a certain position thisLED light stays firm, then the power socket is either faulty or it has a drysolder joint where it is connected to the motherboard.

The laptop needs the motherboard removed to get access to the DC jack so it can be resoldered or replaced if it is faulty.
This can be repaired but itrequires the laptop to be completely dismantled to get at this power socket andrepair. If you cannot DIY then I suggest you get a quote first.

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I own a walkman NWZ-S545, and Ive had it for 5 months. Recently the sound quality has gone down drastically. Ive tried multiple ear buds and they all are new so i know theres nothing wrong with them. Now,...


Used to be jacks were wired point to point, meaning the strips of metal from the jack had a wire attached to each that lead to a circuit board. Now mostly little prongs come off the jack and are soldering straight to the circuit board so that when plugged in if the solder joint is weak or the plug takes a hit these prongs can separate from the solder. Not only was the older point to point system easier to work on since the jack was not encased in plastic but the connecting wires allowed for a lot of give if the plug/jack took a hit. When pressure or a certain angle is put on the plug it may cause the prong(s) on the jack to temporarily reconnect with the solder joint. So......take screws out so you can remove cover to expose inside of jack. Plug in buds, power on unit and play a song. With something non conductive such as a chopstick press down on areas of the jack and when sound changes you've probably found where the broken joint is. With power off you must then unscrew the board to expose the back side of the board and re-solder the connection using a soldering iron that comes to a small point so that nothing else but that joint is touched. Usually you can use the solder that's still there without adding any extra. Never soldered? Might want to get a friend who has. The only other possibility is there is no longer a good connection to the plug. Easy to fix in the point to point days, but now the jack needs to be replaced(with difficulty the jack can be repaired, but may require cutting the plastic housing in half.

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1 Answer

I need hp pavilion dv7 1240us motherboard power problem solution..i have allready check dc jack,battery,power cord..and i soldring dc jack,battery jack..please some body help me... plz give me this...


I am not exactly sure what is the problem. Are you certain it is a power problem with the mother board? It could also be damaged or non functional.
Here's a troubleshooting guide from HP that might help you.
and the product's manual:

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1 Answer

Sony viao wont boot, battery light flashes amber once when power button is pressed, AC power indicator on laptop is green and responds to being un-plugged and the adapter LED is green,but it still wont...


Move the power jack around while plugged in, does the blinking on the battery stop when you hold it in certain positions? If so, your dc-jack needs to be soldered, but i probably was loose already before you started using it. It could be a broken motherboard issue as well. You can try to open the laptop and check the dc connection. There is a Laptop Repair Guide that shows you how to take apart a laptop, the sony may be made in a similar way. Sony Repair NYC

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1 Answer

My power cord works on my inspiron b130 but the connector may be loose. i have to jiggle the cord to get power to the computer


this is usually a sign of a bad dc jack. Unfortunately the only way to fix this issue is to take the motherboard out of the system remove the original solder and jack and re solder a replacement. this is not something you would want to try if you are new to soldering as it is a pretty high risk procedure. Most tech shops can offer this repair for you at anywhere from $80-$200. I would contact my local shops and let them know that you need a dc jack replacement and get some estimates. You'll also want to know about what kind of warranty they offer with the repair.

in the future the best way to avoid this issue is to make certain that the ac adapter is unplugged before any movement takes place with the laptop. You'll also want to make sure that no stress is on the cable causing it to bend at an awkward angle and that it isn't in a high traffic area that could be tripped over.

hope this helps.

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If you put any pressure on the screen while repairing the power jack then yes, the LCD will need to be replaced. If you are certain that you did not physically damage the screen during the repair then it is possible that you damaged the motherboard (which houses the video processor). If the motherboard was damaged I would say it's time for a new laptop.

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1 Answer

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From your description it sound like you have a faulty video cable or the video connector on the motherboard is loose.
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