HP dv6000 display problem

when i turn on the laptop , i dont see screen is on, but when connecting my laptop to my pc monitor, i could see my laptop is working fine, just the screen problem.
What could be the problem?
johndennyAsked:
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asiduCommented:
The method  of changing the CCFL and inverter is nearly the same for most laptops.

You can also have a look at the link  for some instructions on replacements.
http://www.laptoprepair.co.uk/how-to-repair-backlight-inverter.htm

Changing of CCFL is a challenging job, its not easy compared to replacing the inverter as mentioned by edbedb.

If you have a spare CCFL you should connect it up to the inverter temporarily to test the inverter.


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OxygenITSolutionsCommented:
Do you need to press the keys to toggle between laptop display and monitor. On an IBM it's FN + F7. Failing that it sounds like a hardware issue.
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davorinCommented:
Most probably your display has gone. But as OxygenITSolutions sugested you can try to togle between displays. On HP it is FN+F4 key combination.
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edbedbCommented:
The LCD will have to be replaced. You can find them on ebay for under $100. Here is a nice one.
http://cgi.ebay.com/HP-DV6000-DV6500-DV6700-15-4-WXGA-LCD-SCREEN_W0QQitemZ270557330153QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item3efe793ae9 
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johndennyAuthor Commented:
I tried with FN + F4 or F7 , didnt work. So I guess i will try if "nobus" suggestion might work (recall) otherwise "ededb" suggestion to buy?
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edbedbCommented:
The recall does not cover the laptop if an external display works. Only if both the laptop and the external displays don't work.
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asiduCommented:
It is no good news for your laptop. As suggested by edbedb,
there may be a need to  change your LCD panel.
The problem could also be with just the CCFL or inverter.

Before deciding on buying the LCD, check the inverter is working OKie.
Its easy and cheap to change the inverter. Inverters cost a few dollars.

CCFL cost about 10-12 dollars. However, the workman ship charges
for replacing the CCFL can be rather high.

Changing the LCD would be much easier to do but the cost of the
LCD will be high compared to CCFL and the inverter.

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edbedbCommented:
If it is the inverter you will see a very dark and faint image on the screen. If you don't see this, it's not the inverter. The same is true if it were the LCD baclight.
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nobusCommented:
for troubleshooting LCd problems, use this guide : http://www.lcdparts.net/howto/troubleshooting/troubleshootingLaptop.aspx
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johndennyAuthor Commented:
i could see very dim display in the monitor, very hard to see, i am able to see from side (sideways) either from right side or left side. so it is CCFL or inverter. I am not sure how to open and replace CCFL or inverter. any idea? or video to do this?
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nobusCommented:
inverter replacement is much easier - and less costly - so start with that
you can find the service manual for how to open /replace parts on the HP site -put in the exact model !
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edbedbCommented:
The inverter in a dv6000 is not hard to replace. The CCFL is very difficult, if it comes to that just replace the LCD panel.
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asiduCommented:
The problem could be either CCFL or inverter in your case.
Chances for CCFL to fail over time are high.

 I would attach a new  CCFL to the inverter by a temporary connection and on the laptop to see
if the CCFL can be lit. That will confirm your inverted is good.

Have a look at this site which shows how to replace to CCFL.
http://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/

Changing of CCFL is a delicate and challenging  job which needs lots of patience and skill.

Follow edbedb advice, changing the whole LCD will be much more easier.

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nobusCommented:
post your model - i'll look up the manual !
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johndennyAuthor Commented:
nobus, this is the model: HP Pavillion dv6000.
ser tag: dv6433cl
thanks
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asiduCommented:
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nobusCommented:
he's too fast..
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johndennyAuthor Commented:
i cant find which manual to read, specially replacing inverter or CCFL for this model.
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edbedbCommented:
Trust me, you don't want to be trying to replace the CCFL.
The inverter is easy. Remove the rubber bumpers on the bottom and top of the LCD. Remove the screws they are covering. Somewhat carefully (they are hard to break, but I've done it) pry off the frame that was being held by the screws.
You will see the inverter below the LCD.
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nobusCommented:
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johndennyAuthor Commented:
i have replaced the inverter, i restart the comp, still dont see my screen, trying to do FN and F5 or other Fs, somehow screen is on now, and restart again, it is still on. One time i restart, and turn on it off, without shutting down, when restart again, screen is off again, dark, i barely see the screen, and in dark room i could see "start windows normally" and click that, and press FN and Fs  , then screen is on again..
So frustrating, what exactly happening here? inverter replaced. any idea whats going on?
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asiduCommented:
Since you can see the windows faintly. Its a clear indication of bad LCD backlight.
The CCFL is not lighted so you are not able to see any thing on the screen. A bad CCFL is the likely fault. Sometimes you may get some light in CCFL for a short while and then it goes dead. This usually happens when the CCFL has aged and is worn out. The solution is replacing the CCFL. As suggested earlier its not easy as replacing the inverter.


If you connect the laptop to an external monitor you should be able to get the video.

Replacing the LCD panel would be much easier but its going to be a costly process.

Hope that helps.
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asiduCommented:
Thank you.
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