Hp pavilion dv4 2140us blank screen REPOST
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Ashmeed
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Aug 28, 2011 at 12:44 PM
Ashmeed - Jan 14, 2012 at 06:55 PM
Ashmeed - Jan 14, 2012 at 06:55 PM
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xpcman
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Aug 28, 2011 at 03:56 PM
Aug 28, 2011 at 03:56 PM
Since the video works OK for an external monitor. Then, the problem is in the screen, backlight or inverter. I suspect you need the services of a qualified repair tech. I don't recommend that end users try to dismantle their laptop screens. Way too much can go wrong. The problem is fixing an old laptop can cost more than buying a new one.
Good Luck
Good Luck
Ashmeed
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Aug 28, 2011 at 04:10 PM
Aug 28, 2011 at 04:10 PM
Thank you for the advice appreciated much....but r u 100 percent sure it is the screen??Because sum time it comes up an then other times no display...but I'm going to use it now on a sony bravia 32 inch through HDMI an see how it works...And one of my friends that works at computer store told me it was a simple capacitor for the LCD that is the problem.
xpcman
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Aug 28, 2011 at 06:12 PM
Aug 28, 2011 at 06:12 PM
100% sure it's broken - zero percent it's anything above or below. It's takes a qualified tech with the right equipment to diagnose. I suggest you pay someone to do that diagnostic.
screen, backlight or inverter
Or the cable from the motherboard to the screen.
It's probably the inverter but it takes hands on testing (with the right equipment and knowledge) to diagnose.
If you shine a bright light at an angle to the screen - can you see a faint image? Then it's the inverter.
If the screen comes-up when the lid is partially open/closed then it's probably the cable.
Good Luck
screen, backlight or inverter
Or the cable from the motherboard to the screen.
It's probably the inverter but it takes hands on testing (with the right equipment and knowledge) to diagnose.
If you shine a bright light at an angle to the screen - can you see a faint image? Then it's the inverter.
If the screen comes-up when the lid is partially open/closed then it's probably the cable.
Good Luck
Ashmeed
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Aug 28, 2011 at 06:55 PM
Aug 28, 2011 at 06:55 PM
you don't see anything when I put on the computer at all now.I jus play need for speed on sony bravia using HDMI output,works just fine.But I shine a light on the screen you get no faint image so I don't think it is the inverter ....what other sighs must I look for???thank you for your help
ashmeed the problem is not your lcd for certain.....dont go and buy a lcd just yet...I have the same problem with one that I am currently repairing .
Xpcman...i dont know who you are but my advice to you is if you want to help do help...but if u r not right infront of the problem u can not be 100% ... especially when money has to spend....last thing you want is that u give incorrect advice that makes ppl spend money and still ahve the same problem...thx for your imput none the less
Xpcman...i dont know who you are but my advice to you is if you want to help do help...but if u r not right infront of the problem u can not be 100% ... especially when money has to spend....last thing you want is that u give incorrect advice that makes ppl spend money and still ahve the same problem...thx for your imput none the less
xpcman
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Sep 17, 2011 at 02:13 PM
Sep 17, 2011 at 02:13 PM
Please note that I listed the cable as a possible problem and I did at no time tell them to buy a new screen:
100% sure it's broken - zero percent it's anything above or below. It's takes a qualified tech with the right equipment to diagnose. I suggest you pay someone to do that diagnostic.
100% sure it's broken - zero percent it's anything above or below. It's takes a qualified tech with the right equipment to diagnose. I suggest you pay someone to do that diagnostic.
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ashmeed
from the test I did it more looks like your lcd cable has gone faulty...
try ebay for a used one as its cheaper...
let me know
from the test I did it more looks like your lcd cable has gone faulty...
try ebay for a used one as its cheaper...
let me know
Thank you all for your help ...but I am going to get it checked by a proper technician an see what is the problem....until then hold on for my answer thanks in advance
Well I just got a used screen from a friend and installed it and it worked perfectly ......in fact rite now I am typing on the same laptop.In conclusion it most likely was the inverter.But for sure nothing is wrong with your board it;s the screen.?Hope this helps.My advice is 2 get a whole new or used screen meaning the whole entire top part of the laptop
Well I just got a used screen from a friend and installed it and it worked perfectly ......in fact rite now I am typing on the same laptop.In conclusion it most likely was the inverter.But for sure nothing is wrong with your board it's the screen.?Hope this helps.My advice is get a whole new or used screen meaning the whole entire top part of the laptop
