I need to open the computer case to either tighten or re-solder the power cord connection. The connection on the back of the computer is loose and the computer has stopped taking a charge; however the computer is still usable with the power cord attached ONLY. The battery will go completely dead unless I fix the problem in short order. How do I open the computer in the shortest way in order to service the power supply area?
You stated that the power cord connection on the computer is loose, but if it operates while connected to the external power supply that would indicate to me that the connection is working. My thought at this point is either that the battery is not accepting a charge, indicating a defective battery, or that there is a problem with the motherboard that is preventing the battery from charging.
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Maybe it's the DC Jack that the power cord plugs into. If the jack is loose then you will experience the issue you are having.
Maybe your DC Power Jack which is where the power cord plugs
into the computer is bad. Take an ink pen and push the tip inside the
jack and see if the little pin wiggles, if so the jack is bad. You'll have to
take the laptop apart to fix it. Most times it is soldered onto the
motherboard, so you will have to desolder the old and solder a new one.
<p>1. Remove the mini-tower computer cord and unplug the power.
Disconnect the cable from the back of the computer for a note in which they
were set to be fast to restore.<br />
<p>2. Unplug the connector on the back of the computer. Tighten
the screws on the back of the computer, back up the side with a screwdriver.
Slide the computer case and put it out of your way.<br />
<p>3. Locate the fan in the box near the back and then connect
the power cord where it is on the motherboard. Unplug the fan motherboard
manual. Remove the four screws holding the fan on the bottom of the box with a
screwdriver to secure.<br />
<p>4. Remove the PC case fan and set aside. Turn the fan of the
new mini-tower in the back of the cabinet with screws and plugs wire connector
on the motherboard.<br />
<p>5. Place the rear plate side of the computer and secure it
with screws. Connect the power cord to power on the back of the case and
connect the cable to the computer case.<br />
<p>6. Connect the power cable from the mini-tower outlet and
turn on the computer.<br />
Check the monitor cord to the PC, tighten them as also check the mother board for any loose connections. If possible try with an another monitor to confirm that the fault is with the monitor or not. If so open the monitor after disconnection of mains and solder all the suspected joints , seen to look dry. Check for loose components, capacitors, IC or resistor that detach the soldering connection when it is hot.
After time, the power output transistors heat-up and develop loose solder connections around the areas of the circuit board that draw high current - thus the signal becomes intermittent. Open the case and closely inspect the solder connections for partial or cold solder connections - re-solder the connection.
Also, check for loose cables.
Try connecting the power-cord to a different wall-plug.
Look on the back for a "rocker" switch.
Flip it to the other side, and try the ON/OFF button.
If nothing, flip it back.
Open the case, and look for any small lamp on the motherboard.
If it is not lit, then the motherboard is not getting any power from the power-supply. Try a different power-supply.
Open the case, and look at the wires coming from the back of the front-panel to the motherboard. Look for any loose or non-connected wires. If one pair of "loose" wires is labelled 'POWER SW(itch)', then reconnect it to the appropriately-labelled pins on the motherboard.
If all else fails, take the computer to a qualified technician, for "hands-on" trouble-shooting.
The female power pin on the motherboard is probably loose and not making connection with the power cord. In that case, you would need to take it to someone that knows how to solder it back onto the board.
There are no internal power supplies in laptops. What has most likely happened is as your laptop fell it either landed on the part of the power cord that was sticking out the back/side of the computer or the tension was so great on the plug from it falling that the power supply connector on the motherboard has broken loose from the motherboard. I have seen this happen a lot. This is not a job for an amatuer. It takes someone with knowledge of laptop repair and motherboard repair. In your best case scenarios either the little strip that contains the power button has popped loose and is not making contact (seen this happen in one case) or the power supply adapter (not part of the laptop) has been damaged and torn some wires. In the first case just try to push that power button strip down on the laptop first to see if it will snap back in place. If you can find someone else that has the same adapter you can ask to borrow theirs for a few minutes. Medium case scenario is that it has broken the solder loose and just needs to be resoldered or a new power plug soldered in. Worst case scenario is that it has cracked the motherboard, which will be expensive to fix (it would have to be replaced). Continuing to try and use it in this state (unless it is the best case scenario) will further damage the motherboard as the electricity will start jumping to places it should not go and eventually destroy the motherboard.
1. the cord is bad, to test this go to local PC shop and buy a universal power cord test it with this cord. If it works then your cord was bad and you have purchased the correct part. If it doesnt work return cord for a refund.
2. The connector inside the laptop that the power cord connects to is loose and has a short in it. If its loose take it to a PC Shop that knows how to solder and have them reconnect it securely.
3. The laptop has incurred internal damage possibly from a fall or ruff handling. If this is the case the Motherboard may need to be replaced. If this is the case consider purchasing a new laptop.
A broken power pin is quite common on laptop computers. The pin gets damaged from plugging and unplugging the cord plus all the daily tugs and pulls on the cord. The cumulative damage breaks the connection from the power pin connector to the motherboard.
If you are mechanically inclined the repair can be made pretty easily. The pin usually runs anywhere from $5 - $15. It's the labor at a shop that is expensive ($99 - $250 or more).
Once you get the system repaired get a Cable Retention device and use it religiously so the problem doesn't reoccur.
Here's a video about the problem and the JerkStopper AC Cable Retention kit.