hp pavillion dv6700 not booting up

nab0610 · 06-12-2009, 11:10 AM

Hey new here and having a problem with my HP Pavillion DV6700 laptop.

It's out of warranty and my USB/Power button board had become loose so it wasn't charging the computer at all. I took it completely apart got the model number of the USB/Power button board, installed it, and put it back together.

I press the power button and nothing happens. I tried putting the USB/Power Button board back in and still nothing.

I'm thinking something either happened to my power button board or something happened with my motherboard. I barely moved my motherboard when i took the laptop apart I never even completely took it out of the case

Is there anyway I can test this out with spending money or anything?

Thanks,
Nick

joeten · 06-12-2009, 12:02 PM

hi this may help you http://www.uofr.net/~greg/hardware/l...oubleshooting/

nab0610 · 06-12-2009, 01:35 PM

OK according to my USB/power board I have a short somewhere in my laptop

my CD drive, bluetooth, webcam, hard drive, LCD panel are all disconnected...so is it my motherboard causing the short or something else?

Any ideas?

**TriggerFinger** · 06-12-2009, 01:47 PM

I see in your opening post that you tried putting back the OLD power board but you still get no power ON... is this correct? If yes, then it could be your motherboard shorting out.

I suggest you check all cables/connections and make sure laptop is getting power. Try with a charged battery. Test also your AC adapter output if it is giving a correct voltage.

GeorgeKS · 06-12-2009, 01:57 PM

Hello

I'm home now, but if I remember correctly, a cable from the USB/power board goes very close to the battery pins. It has been seen to create shorts.

It has been observed also re-attached in the wrong way and frying everything...

You state that "according to...I have a short" what do you mean by that?

As TriggerFinger suggested, check if your AC adapter is functional: Is the blue lead on? (on the Power Jack)

nab0610 · 06-12-2009, 03:08 PM

Yea I had everything unplugged from my computer and I plugged it into the wall adapter and the charging battery light on the MOBO came on

nab0610 · 06-12-2009, 04:28 PM

now no light? no matter what I do?

nab0610 · 06-12-2009, 05:18 PM

can someone help me with testing this thing. I've been looking on the internet and haven't been able to find much if anything.

I have a multimeter and i'm receiving a good amount of Ohms on my USB/Power board

i've used the multimeter on a bunch of different things on the MOBO but haven't had any luck

I have it set to DC volts and i plugged my laptop into the wall and plugged everything up...theres a cube plug that goes into the MOBO with 2 red and 2 black wires and I tried testing that but I got nothing just the multimeter reading going from 0.00 to -0.00

can anyone help or at least point me in the right direction?

nab0610 · 06-12-2009, 07:31 PM

AC adapter is fine, hooked up the wires up fine, i'm not sure about the battery leads thing tho?

Is there a way to check that?

GeorgeKS · 06-13-2009, 01:41 AM

Short of totally removing the mainboard from the base enclosure, no.

But let's summarize:

The AC Adapter itself is functional.
When you plug it into the power jack on the mainboard the blue led (the ring around the jack) remains off.
The mainboard gets no power-at least from the AC Adapter.

When disassembled -check the Maintenance and Service Guide Here http://h10025.www1.hp.com/ewfrf/wc/manualCategory?cc=us&dlc=en&product=3636595&lc=en&jumpid=reg_R1002_USEN- keep it on an Antistatic surface.
You can then connect Screen, Keyboard, PowerBoard and Switchboard/PowerOn button and power on-try anyway.

Is not that difficult just a bit scary at first.

nab0610 · 06-13-2009, 10:07 AM

I got nothing when I put it back together

GeorgeKS · 06-13-2009, 10:16 AM

Hi
Then either the power board is defective, or the mainboard.

nab0610 · 06-13-2009, 02:08 PM

the power board or the power button board?

GeorgeKS · 06-14-2009, 05:14 AM

Hello again

You actually pose a different -and interesting-question.

You started with the USB board, and the power jack that goes with it (or near it).

The PowerButton board (P/N 431437-001) can be and has been defective in a number of systems, however you cannot know unless you replace it. Are you also sure that the power board you have is appropriate for the AC Adapter you are using? (65/90W)

What makes people repair or not a system, is the ability to swap parts and by elimination determine the cause of a malfunction.
From then on, correctly documenting steps taken for a given repair makes the difference.

I know what the possible cause(s) may be, but you do not have the spare parts to validate it.

Can be :
Defective mainboard
Defective Power Button board
Defective Power Board
Defective Screen(!)-did you try disconnecting the screen completely?

nab0610 · 06-14-2009, 07:53 AM

yep screen's been disconnected completely

i tested the ohms on the usb/power board

i'm not sure how to test the power on the main board or the power button board tho

nab0610 · 06-15-2009, 08:17 AM

OK posted on here a few days ago about a problem I was having with my laptop.

Original problem was my USB/Power Board was not working anymore. I took the laptop apart, ordered and installed the new part.

Put everything back together and no power no nothing

So then I took everything back apart and tried the old USB/Power Board and still no power no nothing

So then I used my multimeter and checked the new USB/Power Board and I was consistently getting 18+ Ohms on a 20k scale. When I tested the battery lead I was also getting the same 18+ Ohms on a 20k scale.

I'm at a loss as to what could be wrong now can anyone help me out in diagnosing my laptop.

Thanks

**TriggerFinger** · 06-15-2009, 09:12 AM

Try with a good/working motherboard for isolation purposes.

nab0610 · 06-15-2009, 10:01 AM

I don't have access to a good working motherboard...I'm a college student just trying to repair my computer

It doesn't make any sense to me as to why its not working though.

I tested the outlet get steady voltage from it. I tested the tip of the power cord get steady voltage from that. I tested the ohms on the USB/Power button board and get steady ohms from that. I tested the tip on the USB/Power button board to the battery lead and get steady ohms on that.

Is there something I'm missing here because It would appear power is flowing through the motherboard, but its not turning on?

GeorgeKS · 06-15-2009, 11:12 AM

So, let's go by the elimination process:
What have you NOT changed or tested?

You tested (by your statement, and correct me if I'm wrong)

Power Button
Power Board
Battery
AC Adapter
Memory

I take it that-as illustrious as you appear to be, that's praise not cynicism-the switchboard cables are attached correctly.

Normally, if a system had the power led on but nothing happened, I'd suspect mainboard or cpu. I think that in your case the cpu is the most easy to check: Someone will have a similar, that in the spirit of -blah blah blah- will be willing to allow you to use it, or accept that you will install your cpu on his/her system.

Then will be nothing else to test: If the cpu is not defective is the mainboard.

Systens are dying for no reason.
You may have-or the person that assembled your system-have ESDed the mainboard. Those kind of damage can take months to manifest.

nab0610 · 06-15-2009, 12:01 PM

OK got in working...well temporarily anyway...

So i had no re screwed down and re routed all the cabling but i'd gotten the computer powered up...hadn't even plugged in the keyboard yet

i got an error message saying operating system not found...so i figured awesome i just have to reinstall my operating system and i'm good to go

i re-hooked, screwed down, routed all the cabling...push the power button and nothing...I'm clearly getting power now though as both the AC-DC power connector is lit up blue and the battery is charging constantly now...

maybe i messed up the ribbon cable from the MOBO to the power button board or something...

06-12-2009, 11:10 AM	#1 (permalink)
nab0610 Registered User Join Date: Jun 2009 Posts: 20 OS: vista sp1	hp pavillion dv6700 not booting up Hey new here and having a problem with my HP Pavillion DV6700 laptop. It's out of warranty and my USB/Power button board had become loose so it wasn't charging the computer at all. I took it completely apart got the model number of the USB/Power button board, installed it, and put it back together. I press the power button and nothing happens. I tried putting the USB/Power Button board back in and still nothing. I'm thinking something either happened to my power button board or something happened with my motherboard. I barely moved my motherboard when i took the laptop apart I never even completely took it out of the case Is there anyway I can test this out with spending money or anything? Thanks, Nick

06-12-2009, 12:02 PM	#2 (permalink)
joeten Tech Hardware Team Join Date: Dec 2008 Posts: 3,191 OS: vista	Re: hp pavillion dv6700 not booting up hi this may help you http://www.uofr.net/~greg/hardware/l...oubleshooting/ __________________

06-12-2009, 01:35 PM	#3 (permalink)
nab0610 Registered User Join Date: Jun 2009 Posts: 20 OS: vista sp1	Re: hp pavillion dv6700 not booting up OK according to my USB/power board I have a short somewhere in my laptop my CD drive, bluetooth, webcam, hard drive, LCD panel are all disconnected...so is it my motherboard causing the short or something else? Any ideas?

06-12-2009, 01:47 PM	#4 (permalink)
TriggerFinger Moderator Hardware Team Join Date: Jan 2008 Location: USA Posts: 11,846 OS: Vista SP1, XP SP3, PCLinuxOS2007	Re: hp pavillion dv6700 not booting up I see in your opening post that you tried putting back the OLD power board but you still get no power ON... is this correct? If yes, then it could be your motherboard shorting out. I suggest you check all cables/connections and make sure laptop is getting power. Try with a charged battery. Test also your AC adapter output if it is giving a correct voltage. __________________ DBAN - Memtest86+ - BartPE - Linux LiveCD - ImgBurn - HDD Diags - Disk Copy HOW TO BURN AN ISO FILE

06-12-2009, 01:57 PM	#5 (permalink)
GeorgeKS Registered User Join Date: Jun 2009 Location: The Netherlands Posts: 136 OS: Windows Vista Ultimate SP2 32/64bit My System	Re: hp pavillion dv6700 not booting up Hello I'm home now, but if I remember correctly, a cable from the USB/power board goes very close to the battery pins. It has been seen to create shorts. It has been observed also re-attached in the wrong way and frying everything... You state that "according to...I have a short" what do you mean by that? As TriggerFinger suggested, check if your AC adapter is functional: Is the blue lead on? (on the Power Jack) __________________ You Are What You Do When It Counts Last edited by GeorgeKS; 06-12-2009 at 02:00 PM.

06-12-2009, 03:08 PM	#6 (permalink)
nab0610 Registered User Join Date: Jun 2009 Posts: 20 OS: vista sp1	Re: hp pavillion dv6700 not booting up Yea I had everything unplugged from my computer and I plugged it into the wall adapter and the charging battery light on the MOBO came on

06-12-2009, 04:28 PM	#7 (permalink)
nab0610 Registered User Join Date: Jun 2009 Posts: 20 OS: vista sp1	Re: hp pavillion dv6700 not booting up now no light? no matter what I do?

06-12-2009, 05:18 PM	#8 (permalink)
nab0610 Registered User Join Date: Jun 2009 Posts: 20 OS: vista sp1	Re: hp pavillion dv6700 not booting up can someone help me with testing this thing. I've been looking on the internet and haven't been able to find much if anything. I have a multimeter and i'm receiving a good amount of Ohms on my USB/Power board i've used the multimeter on a bunch of different things on the MOBO but haven't had any luck I have it set to DC volts and i plugged my laptop into the wall and plugged everything up...theres a cube plug that goes into the MOBO with 2 red and 2 black wires and I tried testing that but I got nothing just the multimeter reading going from 0.00 to -0.00 can anyone help or at least point me in the right direction?

06-12-2009, 07:31 PM	#9 (permalink)
nab0610 Registered User Join Date: Jun 2009 Posts: 20 OS: vista sp1	Re: hp pavillion dv6700 not booting up AC adapter is fine, hooked up the wires up fine, i'm not sure about the battery leads thing tho? Is there a way to check that?

06-13-2009, 01:41 AM	#10 (permalink)
GeorgeKS Registered User Join Date: Jun 2009 Location: The Netherlands Posts: 136 OS: Windows Vista Ultimate SP2 32/64bit My System	Re: hp pavillion dv6700 not booting up Short of totally removing the mainboard from the base enclosure, no. But let's summarize: The AC Adapter itself is functional. When you plug it into the power jack on the mainboard the blue led (the ring around the jack) remains off. The mainboard gets no power-at least from the AC Adapter. When disassembled -check the Maintenance and Service Guide Here http://h10025.www1.hp.com/ewfrf/wc/manualCategory?cc=us&dlc=en&product=3636595&lc=en&jumpid=reg_R1002_USEN- keep it on an Antistatic surface. You can then connect Screen, Keyboard, PowerBoard and Switchboard/PowerOn button and power on-try anyway. Is not that difficult just a bit scary at first. __________________ You Are What You Do When It Counts

06-13-2009, 10:07 AM	#11 (permalink)
nab0610 Registered User Join Date: Jun 2009 Posts: 20 OS: vista sp1	Re: hp pavillion dv6700 not booting up I got nothing when I put it back together

06-13-2009, 10:16 AM	#12 (permalink)
GeorgeKS Registered User Join Date: Jun 2009 Location: The Netherlands Posts: 136 OS: Windows Vista Ultimate SP2 32/64bit My System	Re: hp pavillion dv6700 not booting up Hi Then either the power board is defective, or the mainboard. __________________ You Are What You Do When It Counts

06-13-2009, 02:08 PM	#13 (permalink)
nab0610 Registered User Join Date: Jun 2009 Posts: 20 OS: vista sp1	Re: hp pavillion dv6700 not booting up the power board or the power button board?

06-14-2009, 05:14 AM	#14 (permalink)
GeorgeKS Registered User Join Date: Jun 2009 Location: The Netherlands Posts: 136 OS: Windows Vista Ultimate SP2 32/64bit My System	Re: hp pavillion dv6700 not booting up Hello again You actually pose a different -and interesting-question. You started with the USB board, and the power jack that goes with it (or near it). The PowerButton board (P/N 431437-001) can be and has been defective in a number of systems, however you cannot know unless you replace it. Are you also sure that the power board you have is appropriate for the AC Adapter you are using? (65/90W) What makes people repair or not a system, is the ability to swap parts and by elimination determine the cause of a malfunction. From then on, correctly documenting steps taken for a given repair makes the difference. I know what the possible cause(s) may be, but you do not have the spare parts to validate it. Can be : Defective mainboard Defective Power Button board Defective Power Board Defective Screen(!)-did you try disconnecting the screen completely? __________________ You Are What You Do When It Counts

06-14-2009, 07:53 AM	#15 (permalink)
nab0610 Registered User Join Date: Jun 2009 Posts: 20 OS: vista sp1	Re: hp pavillion dv6700 not booting up yep screen's been disconnected completely i tested the ohms on the usb/power board i'm not sure how to test the power on the main board or the power button board tho

06-15-2009, 08:17 AM	#16 (permalink)
nab0610 Registered User Join Date: Jun 2009 Posts: 20 OS: vista sp1	HP Pavillion DV6700 Power Question OK posted on here a few days ago about a problem I was having with my laptop. Original problem was my USB/Power Board was not working anymore. I took the laptop apart, ordered and installed the new part. Put everything back together and no power no nothing So then I took everything back apart and tried the old USB/Power Board and still no power no nothing So then I used my multimeter and checked the new USB/Power Board and I was consistently getting 18+ Ohms on a 20k scale. When I tested the battery lead I was also getting the same 18+ Ohms on a 20k scale. I'm at a loss as to what could be wrong now can anyone help me out in diagnosing my laptop. Thanks

06-15-2009, 09:12 AM	#17 (permalink)
TriggerFinger Moderator Hardware Team Join Date: Jan 2008 Location: USA Posts: 11,846 OS: Vista SP1, XP SP3, PCLinuxOS2007	Re: hp pavillion dv6700 not booting up Try with a good/working motherboard for isolation purposes. __________________ DBAN - Memtest86+ - BartPE - Linux LiveCD - ImgBurn - HDD Diags - Disk Copy HOW TO BURN AN ISO FILE

06-15-2009, 10:01 AM	#18 (permalink)
nab0610 Registered User Join Date: Jun 2009 Posts: 20 OS: vista sp1	Re: hp pavillion dv6700 not booting up I don't have access to a good working motherboard...I'm a college student just trying to repair my computer It doesn't make any sense to me as to why its not working though. I tested the outlet get steady voltage from it. I tested the tip of the power cord get steady voltage from that. I tested the ohms on the USB/Power button board and get steady ohms from that. I tested the tip on the USB/Power button board to the battery lead and get steady ohms on that. Is there something I'm missing here because It would appear power is flowing through the motherboard, but its not turning on?

06-15-2009, 11:12 AM	#19 (permalink)
GeorgeKS Registered User Join Date: Jun 2009 Location: The Netherlands Posts: 136 OS: Windows Vista Ultimate SP2 32/64bit My System	Re: hp pavillion dv6700 not booting up So, let's go by the elimination process: What have you NOT changed or tested? You tested (by your statement, and correct me if I'm wrong) Power Button Power Board Battery AC Adapter Memory I take it that-as illustrious as you appear to be, that's praise not cynicism-the switchboard cables are attached correctly. Normally, if a system had the power led on but nothing happened, I'd suspect mainboard or cpu. I think that in your case the cpu is the most easy to check: Someone will have a similar, that in the spirit of -blah blah blah- will be willing to allow you to use it, or accept that you will install your cpu on his/her system. Then will be nothing else to test: If the cpu is not defective is the mainboard. Systens are dying for no reason. You may have-or the person that assembled your system-have ESDed the mainboard. Those kind of damage can take months to manifest. __________________ You Are What You Do When It Counts

06-15-2009, 12:01 PM	#20 (permalink)
nab0610 Registered User Join Date: Jun 2009 Posts: 20 OS: vista sp1	Re: hp pavillion dv6700 not booting up OK got in working...well temporarily anyway... So i had no re screwed down and re routed all the cabling but i'd gotten the computer powered up...hadn't even plugged in the keyboard yet i got an error message saying operating system not found...so i figured awesome i just have to reinstall my operating system and i'm good to go i re-hooked, screwed down, routed all the cabling...push the power button and nothing...I'm clearly getting power now though as both the AC-DC power connector is lit up blue and the battery is charging constantly now... maybe i messed up the ribbon cable from the MOBO to the power button board or something...