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03-25-2009 12:45 PM
03-29-2009 08:30 PM
I have exactly the same C717NR and same exact symptoms. It will work with a charged battery. With AC adapter in, the power jack blue led comes on only if the battery is on. And as u said, it doesnt really charge as I see that the battery charge is dwindling. Also, as soon as you remove the battery, the ac power jack led goes off. The laptop cannot be run directly via AC. I checked an exact same c717NR and his works fine on AC even when you remove battery while windows is on.
So my question is whether if its the dc power jack that bad or some thing else is messed up? I can say I even swapped mother board and had the same problem.
03-30-2009 12:18 PM
you swapped out the motherboard? and it did not work, then it must be the powerjack, but, what i dont get is that theres power and can't power it on with just the ac on
04-08-2009 01:29 PM
04-08-2009 01:39 PM
04-14-2009 04:08 PM
06-29-2009 08:47 AM
I have the same problem with my C742ea laptop where it would not charge the battery or work on AC power only but works when battery is used in the laptop fully charged.
I know its not the the power jack since i have tested this with a voltage meter and outputting the right voltage.
Tested power on the battery pin and was only getting 1dc which i believe is was tell the board battery is present.
My laptop is out of warranty and cannot send it back to HP therefore I would be grateful if anyone know a fix for this issue or if HP reading any of these forums please do fix these issue or offer complete replacement even for out of warrant laptops.
I am thinking of forwarding a complain to the Consumer Protection people about HP Laptops having all these problems and most coming to light soon after warranty.
07-03-2009 09:00 AM
Just to update all of you with this problem. I have found an HP External Battery Charger on ebay for $49.99 and $15pp to UK which I think would help charge the battery or bypass the laptops charging circuit.
ebay item no: 260431895357
I have ordered one of this and when I recieve it I plan ripping the ends and inplant directly onto motherboard. ie the connector to the battery connector.
Please note that I am not promoting this item but I thought you should all know of that you could have another solution other than a new motherboard.
I would update you all on progress and I would appreciate any info as to how to bypass the laptops charging circuit.
12-22-2009 04:04 PM
Hi. I have a Presario C700 with what appears to be the same problem. The power supply seems to be fine, but when you hook it to the laptop, just the slightest wiggle of the connector causes the blue light to go out. My initial guess was that the DC power connector was soldered to the main board and the connections were flaky, but this forum suggests that the connector is actually on a connector rather than being soldered in. I did a web search and found a lot of vendors for the connectors, and they all look like soldered-in types. Since I have not yet opened up the case, can someone please clarify what this connector really looks like?
01-03-2010 01:05 PM - edited 01-03-2010 01:05 PM
It looks like this.....
Service Manual is here....
I had the same no power from my Brother in law's C700, not even a fan or blue light from the DC input.
Took all components off & removed the motherboard. Checked the power going through the DC input cable to the white connector, was reading 18.9 from the red +ve & Black -ve connectors as well as 16.8 when using the yellow cable connecting point.
So the cable was fine. I reconnected all cables & ZIF ribbon connectors etc, tried to power it up & it was all fine again.
This was after he'd taken it to PCWorld (Why do people use them....!) and been relieved of £40 for them to tell him it needs another £150 to fix.... (hence he took it back and got me to have a look at it!.)
So, all now working with ZERO new parts, but would have been £190 all in if he'd have just taken what PCW told him.