Comments on: Laptop does not start. Is it bad power jack or motherboard? http://www.insidemylaptop.com/laptop-does-not-start-bad-power-jack-motherboard/ Do-It-Yourself laptop and notebook repair tips and tricks Wed, 08 Feb 2012 14:57:03 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Ashley http://www.insidemylaptop.com/laptop-does-not-start-bad-power-jack-motherboard/comment-page-3/#comment-512968 Ashley Wed, 08 Feb 2012 14:57:03 +0000 http://www.insidemylaptop.com/laptop-does-not-start-bad-power-jack-motherboard/#comment-512968 I have got a Sony Vaio VGN-NR160E when I press the power on button the green LED glows. There are 3 LED's one for Power, one for Battery charging and one for HDD. The power LED and the battery LED glows..The HDD LED turns on momentarily when I press the Power button but goes off after a second or two. There is absolutely no activity on the screen, no power logo. no bios prompt and no boot up.Just a blank screen without any backlight... as if its off... The fan does not run too. What might be the problem? Could you help me out ? please? I have got a Sony Vaio VGN-NR160E when I press the power on button the green LED glows. There are 3 LED’s one for Power, one for Battery charging and one for HDD. The power LED and the battery LED glows..The HDD LED turns on momentarily when I press the Power button but goes off after a second or two.

There is absolutely no activity on the screen, no power logo. no bios prompt and no boot up.Just a blank screen without any backlight… as if its off…

The fan does not run too. What might be the problem? Could you help me out ? please?

]]> By: hichem http://www.insidemylaptop.com/laptop-does-not-start-bad-power-jack-motherboard/comment-page-3/#comment-509572 hichem Sun, 05 Feb 2012 18:04:11 +0000 http://www.insidemylaptop.com/laptop-does-not-start-bad-power-jack-motherboard/#comment-509572 Salut, pour ma part j'ai un présario v6000 et depuis quelques jours il ne démarre pas, meme s'il est sous tention et que le ventilo tourne meme le DD est en marche mais rien sur l'écran. Est ce le problème vient de CPU ou de l'écran????????????? Salut, pour ma part j’ai un présario v6000 et depuis quelques jours il ne démarre pas, meme s’il est sous tention et que le ventilo tourne meme le DD est en marche mais rien sur l’écran.
Est ce le problème vient de CPU ou de l’écran?????????????

]]> By: Laptop Tech http://www.insidemylaptop.com/laptop-does-not-start-bad-power-jack-motherboard/comment-page-3/#comment-504929 Laptop Tech Thu, 02 Feb 2012 02:29:17 +0000 http://www.insidemylaptop.com/laptop-does-not-start-bad-power-jack-motherboard/#comment-504929 @ Daug, <blockquote>Mate I have a CQ50 and it won’t charge….unless I slowly pull the powerplug out of the socket and hear a few clicks and then plug it straight back in…or sometimes if I change power outlets completely. THE HELL??? lol. Any ideas?</blockquote> Most likely it's either bad AC adapter or failed DC jack inside the laptop. 1. Test your AC adapter with a voltmeter. If voltage cuts off when you move the cable, probably there is a short inside. Replace the AC adapter. 2. If your AC adapter works properly, most likely there is a problem with the DC jack. Take a look at this guide. It explains how to access and replace DC jack harness on Compaq Presario CQ50, CQ60 or CQ70 laptops. http://www.insidemylaptop.com/remove-motherboard-from-compaq-presario-cq50-cq60-cq70-laptop/ The DC jack harness shown on the last picture. Try replacing it. Do not replace the motherboard. Try replacing just the DC jack harness first. @ Daug,

Mate I have a CQ50 and it won’t charge….unless I slowly pull the powerplug out of the socket and hear a few clicks and then plug it straight back in…or sometimes if I change power outlets completely. THE HELL??? lol. Any ideas?

Most likely it’s either bad AC adapter or failed DC jack inside the laptop.
1. Test your AC adapter with a voltmeter. If voltage cuts off when you move the cable, probably there is a short inside. Replace the AC adapter.
2. If your AC adapter works properly, most likely there is a problem with the DC jack.
Take a look at this guide. It explains how to access and replace DC jack harness on Compaq Presario CQ50, CQ60 or CQ70 laptops.
http://www.insidemylaptop.com/remove-motherboard-from-compaq-presario-cq50-cq60-cq70-laptop/
The DC jack harness shown on the last picture. Try replacing it. Do not replace the motherboard. Try replacing just the DC jack harness first.

]]> By: Laptop Tech http://www.insidemylaptop.com/laptop-does-not-start-bad-power-jack-motherboard/comment-page-3/#comment-504846 Laptop Tech Thu, 02 Feb 2012 00:17:45 +0000 http://www.insidemylaptop.com/laptop-does-not-start-bad-power-jack-motherboard/#comment-504846 @ Sam, <blockquote>How do I replace the fuse?</blockquote> Fuses soldered to the motherboard. If the fuse failed, it's necessary to locate it and desolder. After that solder a new fuse. Sorry cannot help here. I'm not fixing motherboards on the component level. @ Sam,

How do I replace the fuse?

Fuses soldered to the motherboard. If the fuse failed, it’s necessary to locate it and desolder. After that solder a new fuse.
Sorry cannot help here. I’m not fixing motherboards on the component level.

]]> By: Laptop Tech http://www.insidemylaptop.com/laptop-does-not-start-bad-power-jack-motherboard/comment-page-3/#comment-504604 Laptop Tech Wed, 01 Feb 2012 16:35:24 +0000 http://www.insidemylaptop.com/laptop-does-not-start-bad-power-jack-motherboard/#comment-504604 @ yaro, <blockquote>Mate you’ve just made my day. I stripped my laptop int small piees and couln’t figure out what’s wrong with it. Power likght blinking but nothing when pressed the power button. Then I found your excellent article and I thought I test the PSU… 12V instead of 19. Connected another one and now all works perfectly.</blockquote> You are welcome. You should have started with testing the AC adapter though. :) @ yaro,

Mate you’ve just made my day. I stripped my laptop int small piees and couln’t figure out what’s wrong with it. Power likght blinking but nothing when pressed the power button. Then I found your excellent article and I thought I test the PSU… 12V instead of 19. Connected another one and now all works perfectly.

You are welcome.
You should have started with testing the AC adapter though. :)

]]> By: Doug http://www.insidemylaptop.com/laptop-does-not-start-bad-power-jack-motherboard/comment-page-3/#comment-504453 Doug Wed, 01 Feb 2012 12:43:57 +0000 http://www.insidemylaptop.com/laptop-does-not-start-bad-power-jack-motherboard/#comment-504453 Mate I have a CQ50 and it won't charge....unless I slowly pull the powerplug out of the socket and hear a few clicks and then plug it straight back in...or sometimes if I change power outlets completely. THE HELL??? lol. Any ideas? I'm || this close to ordering a new motherboard but want to know 100% what other problem it could be. Any help would be much appreciated! Mate I have a CQ50 and it won’t charge….unless I slowly pull the powerplug out of the socket and hear a few clicks and then plug it straight back in…or sometimes if I change power outlets completely. THE HELL??? lol. Any ideas?

I’m || this close to ordering a new motherboard but want to know 100% what other problem it could be. Any help would be much appreciated!

]]> By: Sam http://www.insidemylaptop.com/laptop-does-not-start-bad-power-jack-motherboard/comment-page-3/#comment-502440 Sam Mon, 30 Jan 2012 04:44:08 +0000 http://www.insidemylaptop.com/laptop-does-not-start-bad-power-jack-motherboard/#comment-502440 How do I replace the fuse? How do I replace the fuse?

]]> By: yaro http://www.insidemylaptop.com/laptop-does-not-start-bad-power-jack-motherboard/comment-page-3/#comment-499323 yaro Fri, 27 Jan 2012 14:06:44 +0000 http://www.insidemylaptop.com/laptop-does-not-start-bad-power-jack-motherboard/#comment-499323 Mate you've just made my day. I stripped my laptop int small piees and couln't figure out what's wrong with it. Power likght blinking but nothing when pressed the power button. Then I found your excellent article and I thought I test the PSU... 12V instead of 19. Connected another one and now all works perfectly. Many thanks Mate you’ve just made my day. I stripped my laptop int small piees and couln’t figure out what’s wrong with it. Power likght blinking but nothing when pressed the power button. Then I found your excellent article and I thought I test the PSU… 12V instead of 19. Connected another one and now all works perfectly. Many thanks

]]> By: Laptop Tech http://www.insidemylaptop.com/laptop-does-not-start-bad-power-jack-motherboard/comment-page-3/#comment-490282 Laptop Tech Thu, 19 Jan 2012 21:41:41 +0000 http://www.insidemylaptop.com/laptop-does-not-start-bad-power-jack-motherboard/#comment-490282 @ olusegun, <blockquote> i discovered each time i remove the battery and plug it to the Mains,the indicator power light beside the plug of the system will lit for about 3 seconds before it went off again.i have checked it with another charging adapter all to no avail.</blockquote> This sounds like motherboard failure to me. I'm afraid there is not much you can do besides replacing the motherboard. Probably the laptop not worth it. @ olusegun,

i discovered each time i
remove the battery and plug it to the
Mains,the indicator power light beside the
plug of the system will lit for about 3
seconds before it went off again.i have
checked it with another charging adapter all
to no avail.

This sounds like motherboard failure to me. I’m afraid there is not much you can do besides replacing the motherboard. Probably the laptop not worth it.

]]> By: Satyam http://www.insidemylaptop.com/laptop-does-not-start-bad-power-jack-motherboard/comment-page-3/#comment-489011 Satyam Wed, 18 Jan 2012 21:45:33 +0000 http://www.insidemylaptop.com/laptop-does-not-start-bad-power-jack-motherboard/#comment-489011 Hi,,, I have Hp HDX 16t. What did happen??? It was working fine. One day battery died and it went to hibernation by it self as i set so. After few hours i tried to restart without charger plug in (as i did not remember that battery died) and it got stuck in middle of process. At that time it was showing speaker panel light and CPU light steady. So i plugged in charger but the charging light ( at front near by light indicating cpu function) did not turn on even though the light nearby plug in socket was on. Then i tried to turn off by pressing start button for a while but it did not turned off. SO i removed battery. Since then its not showing any light at all. What may be not function??? DC POWER JACK?? FUSE? MOTHERBOARD??? Does mother board can get crashed in such a way???? any idea what should do??/ Hi,,, I have Hp HDX 16t. What did happen???
It was working fine. One day battery died and it went to hibernation by it self as i set so. After few hours i tried to restart without charger plug in (as i did not remember that battery died) and it got stuck in middle of process. At that time it was showing speaker panel light and CPU light steady. So i plugged in charger but the charging light ( at front near by light indicating cpu function) did not turn on even though the light nearby plug in socket was on. Then i tried to turn off by pressing start button for a while but it did not turned off. SO i removed battery. Since then its not showing any light at all.
What may be not function???
DC POWER JACK??
FUSE?
MOTHERBOARD???

Does mother board can get crashed in such a way????
any idea what should do??/

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