The battery seems to be good, in that it powered the unit for a day, but will not charge now. Is there a way to discover if it is a) the battery, b)the internal circuitry/power supply or c) the power cord/transformer? Thanking you in advance
POWER SUPPLY & BATTERY PROBLEM
If the laptop battery is more than 3 - 4 years old then the battery could be worn out. Rechargeable batteries have a finite number of charge and discharge cycles and will lose their charge capacity over time, i.e. won't charge to 100% and gradually the charge reduces until the battery won't charge up at all. OR The battery shows a 100% charge but when the adapter is disconnected the battery drops off to zero capacity in a very short time. If the battery drops to an unacceptable charge level then the battery needs to be replaced. When you connect the power adapter into the laptop, does the power LED light up? If not then - The battery adapter or the adapter's power lead or the laptop's power socket could be faulty. Check power adapter's DC plug that connects into the laptop power socket with a multi-meter, the voltage should be slightly higher than the voltage that is printed on the label on the bottom of the adapter. If the voltage is zero or way below the voltage that is printed on the label then the power adapter is faulty and needs to be replaced. If the adapter is OK then connect it to the laptop and power it up, then look at the power/battery charging LED light and wriggle the power plug in the laptop's power socket. If the power/battery LED light flashes and in a certain position this LED light stays firm, then the power socket is either faulty or it has a dry solder joint where it is connected to the motherboard. This can be repaired but it requires the laptop to be completely dismantled to get at this power socket and repair. If you cannot DIY then I suggest you get a quote first.
SOURCE: HP Pavilion DV1000 not charging the battery
yes its u r mother board battery connector problem...in the mother board there is IC for sensoring DC supply..near the battery connector..plase check the IC is working properly with A logic probe.if it not working plaese replace the IC with a blower..
SOURCE: HP zd8000 will not charge battery or run on power cord
check the dc jack probably is loose that cause the batterie dont get charge
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.
SOURCE: My hp pavillion dv5t-1000 power cord not working
Test your voltage on your power supply...There should be a voltage amount on the sticker on your power supply telling the output.Make sure yours is putting out the right amount.If this test good,your probally looking at a bad dc jack.Jacks need to be checked by a certified repair person.....Goodluck......If this is helpful ...Be so kind as to give a testimonial.....Thank you
SOURCE: hp pavilion dv8000 help
I had the EXACT same issue on my HP Pavilion DV8000. After reading this thread I started disecting the machine, sure the issue was a faulty internal power plug/cable. It is TRULY a big job, but very doable without special tools. You pretty much have to take every single screw out of the thing to get to that stupid cable.
Here are a few things to know:
1) there are a lot of screws - mainly long black (L 12) and short silver (L 5x2.5). Keep track of all of them in order so you don't end up like me - with 3 leftovers. Lol. There is ONE long black screw that is a little shorted than the others (L 10). This is one I had left over. There are two VERY tiny black ones. I also have one of those left over. There is also a few smaller black ones, too. Just keep them all noted as you remove them and remember where these odd ones go!
2) There are some very flat band cables that plug in to tiny plgs. However thereis no plug on the cable. The flat end just shuves into the plugs. These are very delicate. be gentle with them.
3) When you finally get the housing for the fan loose you can now get to the entire power supply cable. Here is a note: I FIXED my problem by unplugging this cable and plugging it back in. The cable runs under the fan housing, and it seems like you have to remove that housing to get to the cable, but actually it comes out again right next to the processor and heat sink. There is a thin sheet of black sticky insulator tape over the processor and the cable at that point. You'll have to gently remove it. There is not much room there, but you CAN unplug the cable without removing the entire fan housing.
Here is what I did to test this plug and cable. After unplugging it, I shoved a tiny straightened staple (the female plug is very tiny) into the female receptacles for the prongs on the motherboard (red and black only). Then I plugged the power supply in to the power jack. With a DC meter I verified that the female end of the power cable inside the machine was getting juice, and it was.
With nothing left to test, I put it all back together (save three screws) and it is now charging the battery and running from the ad power plug. Whatever I did fixed it!
One last note: There are 4 sequenced screws that hold the heat sink tight. These are under a bit of pressure so the sink is tight. DO NOT remove these as the sink has a heat conducting "goo" that helps it disperse the processor heat. As old as these machines are now, you don't really want to disrupt that "goo" and risk the processor over heating.
I hope all of this typing helps someone.
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