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My hp compaq tc4200 wont turn on.if i plug power cable it shows charging after few seconds it wont charge i removed battery but the problem still

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Here below are possible causes and troubleshooting steps of laptop that can't power on, hope it may help:
Possible causes:

1. AC adapter failure.
2. Power jack failure.
3. Motherboard failure.

Possible troubleshooting steps and repair solutions:
1. Test your compaq tc4200 power supply with a digital multimeter. It's possible that you have a failed AC adapter. If you don't have a multimeter, test your laptop with another known good AC adapter.

2.It's possible that power jack (socket where you plug the AC adapter) is broken. Remove the motherboard and take a closer look at the power jack. In some cases you can fix the jack by resoldering it on the motherboard. In other cases you have to replace the jack with a new one. Using a multimeter, test if the power goes to the motherboard through the jack.

3. If replacing the AC power adapter and jack on the motherboard doesn't help, most likely you have a bad motherboard. Replace the motherboard.

Posted on Jan 10, 2013

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Posted on Jan 02, 2017

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SOURCE: hp compaq nx9110 runs only on battery when it is plugged to AC

It sounds like you have a faulty power jack, and possibly a dead battery as well. You should take it to a person you may know that can order and solder a new one in or take it to your local electronics repair shop. I do repairs like this on a daily basis for my computer business.

Posted on Apr 28, 2009

stif_NEC
  • 441 Answers

SOURCE: hp compaq nx7400 - battery died and power cord will not turn comp

If your system won't boot up with just the AC adapter connected, it means to say that there's a problem with the AC adapter or the motherboard of the computer. Basically, if the AC adapter or the motherboard is damaged, you won't get a charged battery. If there's another AC adapter that you can try your computer with then that will be great. If antoher AC adapter works, then you just have the AC adapter replaced. If a known AC adapter didn't work then you may need to consider replacing the motherboard of the computer.

Posted on May 07, 2009

  • 36 Answers

SOURCE: Laptop battery wont charge?

It could be the battery needs replacing ... it shows that the battery is charging but it doesn't keep the charge .....

Posted on May 23, 2009

  • 1043 Answers

SOURCE: Battery charging for few seconds before it stops

Either the electronics in the charger or the battery have failed. If you still have any warranty left on the laptop call Dell support and they will assist you in identifying which one has failed.

Posted on Sep 17, 2009

  • 37 Answers

SOURCE: hp compaq nx6310 wont turn on. When pressing power

it will either be the batery is no good, or adapter ot the port on your laptop

Posted on Feb 27, 2010

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