Compaq Presario Laptop AC Adapter Plug

Please 1. unplug the ac adapter, detach the main battery, press the power button for 15 seconds, plug in the ac adapter, and restart your laptop. If the problem persist: 2.unplug the ac adapter, detach the main battery, press the power button for 15 seconds, take out the hard drive, plug in the ac adapter, and restart your laptop. If the problem persist, then it means that the laptop motherboard is dying. Please read your laptop's service manual before you open the laptop's case/body.

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 the compaq f700 ac adapter 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.

i cannot think of a commercial product designed for this. I believe that you either may need to send it in for repairs, or if the pin inside the female end is bent, try bending it back. BE CAREFUL.

Try a hardware reset: remove the battery and unplug the AC adapter, press and hold the power-on button for at least 20 seconds (it will discharge the internal capacitors), then put the battery and plug in the AC adapter. Try to press the power-on button again.

Yep, the power supply input to the laptop is gone - the external input shorted out. You may find that the Compaq repair charges almost equal a new one.

Do power drain

step 1: remove battery and ac adapter from your laptop

step2: hold power button for 30second-1minute

step3: now put back battery and ac adapter

step4: now power on you sud be on


give a try hope it helps u

The sparking has probably caused your circuit protection inside the AC adapter to turn off the current.
Also, when you are plugging an adapter in,,do not have it plugged into the wall power outlet when plugging into the laptop,,,plug into the laptop first and then plug into the wall.

dear N9YK

you can follow this

If you have a loose connection where you plug in the power on your laptop, or it works intermittently, you could have a bad dc jack. Symptoms

• Move the power plug and the laptop loses connection
• Broken or cracked dc jack
• Laptop won't charge but worked on battery
• Power LED and battery LED flicker when the adapter tip is moved
• Battery won't charge
• Sparks come out the back of the laptop

Why does this happen?

• Flaw in manufacturer designs
• Use of universal or non-original ac adapter
• Lots of plugging and unplugging of the ac adapter

• Tripping on or pulling the ac adapter cord

or you can check your dc amper in your adaptor

oke



thx

cropp

It sounds like one of the most frequent failure for a laptop, the plug on the back of your laptop is probably broken. Check if it's loose, try to move the plug until you get the orange light. If it's the case, someone need to resolder/replace the plug on the motherboard.

Hope this helps! Let me know how it goes.

Alex