How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask sliver68420 Your Own Question

sliver68420
sliver68420, Computer Repairer
Category: Laptop
Satisfied Customers: 387
Experience:  A+ pc technician with over 10 years experience.
9257729
Type Your Laptop Question Here...
sliver68420 is online now

Hi, I have an Acer Aspire 5250 Laptop with a P5WE6 LA-7092P

Customer Question

Hi, I have an Acer Aspire 5250 Laptop with a P5WE6 LA-7092P Motherboard.
The Laptop had a cracked screen but powered on and booted normally.
I removed the old screen to get the part number for the lcd before ordering a new screen.
New screen arrived yesterday and I fitted it. but now when powered on it turns off after 3-4 seconds. Thats when I realised I've made a big mistake and had left the battery in when removing and fitting the new screen.
Is it possible I've shorted the LCD controller?? I've looked at the schematics of the motherboard but being new to electronics I'm having trouble identifying the problem.
I've got a multimeter and can solder. Just want to be pointed in the right direction.
Thanks
Submitted: 3 years ago.
Category: Laptop
Expert:  sliver68420 replied 3 years ago.

Customer:

Hi my name is XXXXX XXXXX I would be happy to help :)

Customer:

if when the screen goes off after 3-4 seconds..you take a flashlight and shine it at an angle at the screen..if you can see a faint image on there then its the backlight that is bad...if not then it is the power inverter that's gone.

JACUSTOMER-ruyhve0i- :

Hi Jamie,

JACUSTOMER-ruyhve0i- :

The laptop powers off after 3 seconds so there's no display. Would a bad LCD power inverter stop the laptop powering up? If I upload a pic of the motherboard could you show me where it is?

JACUSTOMER-ruyhve0i- :

Wait.. it doesnt have an inverter??

Expert:  adamd-mod replied 3 years ago.

Hello,

I've been working hard to find another Professional to assist you with your question, but sometimes finding the right Professional can take a little longer than expected.

I wonder whether you're ok with continuing to wait for an answer. If you are, please let me know and I will continue my search. If not, feel free to let me know and I will cancel this question for you.

Thank you!


Adam
Customer: replied 3 years ago.

Hi,


Yes I want to wait for an answer.


Thanks

Expert:  adamd-mod replied 3 years ago.

Hello,

 

We will continue to look for a Professional to assist you.

 

If you decide on a refund, or wish to keep the credit for a future question, then of course we'd honour it.

 

Thank you for your patience,

 

Adam

Expert:  sliver68420 replied 3 years ago.

I appologize for the delay and the initial confusion.I had for some reason thought it was only the screen that was going black after a few seconds. Have you tried to boot up pc without the new screen hooked up..also can you use a vga or hdmi plug to try testing it with an external monitor(if you do this remember to switch it to the external monitor with the fn+screen buttons on your keyboard). Although this doesn't sound like a screen issue because it would be able to stay powered on without a screen. What it sounds like is something was shorted or blown...usually the laptop will give you an error code of some kind to let us know where the problem lies. When it turns off are there any flashing lights on or around the keyboard or any unusual beeps? And have you tried removing the battery and using only the ac adapter and then powering the pc on without the battery in?(usually when i do this i have to hold the power button down for 3-4seconds)
Thanks,
Jamie Smile

Customer: replied 3 years ago.

Hi Jamie


 


Yep basically I've tried all that. no beeps just turns off after 2-3seconds.


 


I was just wondering if you knew what component I could of shorted to stop it from booting.


I'm thinking it must be in the LCD power circuit??


Would shorting something in that circuit stop it from booting?


 


What would be the prime suspect?


 


Thanks

Expert:  sliver68420 replied 3 years ago.

You definately zapped it. Its turning off because the motherboard is not passing the power through correctly...I would focus on the areas around the battery and ac plug area +the area around the screen plug. I would first try booting it up with no battery in it plus a different ac cable if you can. If still no luck which I suspect...then you will want to try reflowing the motherboard next...to do that you have to remove the motherboard and strip it down to nothing but the motherboard..that means no nic cards, no ram chips, no plugs (you can leave jumpers on)...then make 4-5 aluminum foil balls to balance the motherboard on because you don't want it sittig directly on the pan or cookie sheet or whatever your using to bake it on. It must be perfectly level...then bake at 400 for 15mins...then don't remove it from the oven..just turn off the oven and leave it opened to cool...leave it to cool for about 2hrs...then put the pc back together...put battery in last and plug in the ac adapter too and wait at least ten seconds before powering the pc on.
hopefully that will do the trick. If not you will have to test all the little capacitors ect on the board near those two areas i mentioned earlier. Let me know how it goes.
thanks,
Jamie Smile

 

ps...always make sure you are properly grounded when handling computer parts and never touch anything gold with your hands/skin because the oils will kill the conductivity.

What Customers are Saying:

 
 
 
  • My Expert answered my question promptly and he resolved the issue totally. This is a great service. I am so glad I found it I will definitely use the service again if needed. One Happy Customer
< Previous | Next >
  • My Expert answered my question promptly and he resolved the issue totally. This is a great service. I am so glad I found it I will definitely use the service again if needed. One Happy Customer
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C.
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C.
 
 
 

Meet The Experts:

 
 
 
  • Hans Uebelhoer

    Hans Uebelhoer

    Computer Support Specialist

    Satisfied Customers:

    123
    I can repair laptop hardware as well as softwware.
< Last | Next >
  • http://ww2.justanswer.com/uploads/huebelhoer/2010-1-17_1950_P1160023.JPG Hans Uebelhoer's Avatar

    Hans Uebelhoer

    Computer Support Specialist

    Satisfied Customers:

    123
    I can repair laptop hardware as well as softwware.
  • http://ww2.justanswer.com/uploads/SH/Shefin/2012-6-6_17328_1.64x64.jpg Shefin's Avatar

    Shefin

    Laptop Support Specialist

    Satisfied Customers:

    78
    Working as Tech support specialist with a world famous computer manufacturer
  • http://ww2.justanswer.com/uploads/WA/wa94sound/2012-6-6_202633_iStock000007010121Small.64x64.jpg Bernie's Avatar

    Bernie

    Laptop Technician

    Satisfied Customers:

    64
    6+ years experience, Microsoft MCDST/CompTia A+ Certified
  • http://ww2.justanswer.com/uploads/DU/dukey01/2012-6-10_20542_DUKEY01.64x64.jpg Byron's Avatar

    Byron

    PC Support Tech

    Satisfied Customers:

    51
    A+ MCSE 11 years at a large law firm.
  • http://ww2.justanswer.com/uploads/mike58801/2010-5-24_13250_On-force.jpeg mike58801's Avatar

    mike58801

    Computer Enthusiast

    Satisfied Customers:

    42
    A+ Certified IT Tech
  • http://ww2.justanswer.com/uploads/HU/HunterOwens/2011-3-16_4571_DSC0278.64x64.JPG HunterOwens's Avatar

    HunterOwens

    Computer Repairer

    Satisfied Customers:

    41
    A Microsoft Certified Technology Specialist here to help you resolve your laptop problem fast!
  • http://ww2.justanswer.com/uploads/SP/spherrod/2012-6-6_174244_1000852.64x64.JPG Steve Herrod's Avatar

    Steve Herrod

    Computer Support Specialist

    Satisfied Customers:

    39
    Conversant with all makes/models of laptop