Question about Lenovo ThinkPad R51e Notebook

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After changing LCD display , Notebook don't start

I replaced the LCD , after that the notebook starts for few seconds and then stops again starts , in a recycle.

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  • Lenovo Master
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Check the connections. Make sure that it was not a bad cable. If you had to replace the screen because of damage from a fall, there is a chance that it was more than the screen that was damaged

Posted on Nov 29, 2012

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Posted on Jan 02, 2017

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Geekman
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SOURCE: my notebook screen 3000 n100 goes dark after few second

This could be a faulty CCFL lamp.
To determine if you have a LCD screen, inverter or video card problem, read this and follow these instructions.
Defective CCFL backlight, it may have the following symptom: Screen flashs on red/pink and off. Picture stays on in red and slowly be come normal. Picture flickering with dim display or appear black. Picture flickering on and off. All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replacing the CCFL lamp.
Connect an external monitor to your laptop and power the monitor up first then the laptop, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight. Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Check out
www.lcdparts.net
for parts, repair service and DIY info.

Posted on Jul 15, 2009

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Go into the Display Settings under the Control Panel and change the resolution. Some screens won't take the high resolution that's why when you replace a screen you need to make sure you're replacing it with one like you had.

Click Start/Control Panel/ Display and go to the Settings or Resolution area to change it. On some systems the Display will be under Appearance and Personalization.

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Black Screen=Bad screen or motherboard?


You have done your homework, but first! remove main battery and press power, if no change! take out one stick of ram and power up, no change remove second stick and put the first one back and power up, if no change remove hard drive and start computer to see if the logo image comes back. Now reseat the hardware back in place and start computer, if no change! the motherboard is the problem and replacement the only option.

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push stop button for a few seconds until it beeps or the readout changes. unplug,,,,,plug back in....push "Select" or "menu" button depending on which machine you have....push again and again until the program you want is on the display or readout. Then push the "start" button ....Don't push any timer buttons or arrows!

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My hp dv600 when powered up looks normal but if i give it a few seconds the screen goes black and wont come back i shined a light and i do have picture but no light maybe ballast?


alejandro,

An LCD screen cannot produce enough light by itself. It needs an additional light source.
A Backlight is the additional light source.

A Backlight is a CCFL.
Cold Cathode Fluorescent Lamp.
Very similar to the Fluorescent lamps, (Bulbs), used in homes and businesses, but on a MUCH smaller scale.

HP Pavilion dv6000z series Notebook PC, is a general series designation. The EXACT model number is on the bottom of the laptop in a white Service Tag.

The HP Pavilion dv6000z series of Notebook PC's used either an LED or CCFL type of Backlighting.
Depends on which model it is.

http://www.screentekinc.com/backlight-ccfl-led-explained.shtml

As stated in the above information a Backlight is mounted in the back, or on the side of the LCD screen.
The LCD screen is composed of layers. These layers are held together by a metal frame which emulates a picture frame. If the Backlight is a side unit it will be held in place next to the layers, and inside the metal frame.

[Which means the LCD screen's metal frame, (LCD Panel Frame), needs to be opened on one side.
This will leave the layers which compose the LCD screen loose. The layers MUST be held in the proper placing when changing out the Backlight. Not an easy job to accomplish]

An Inverter is used to change the power coming from the laptop, to be used by the LCD screen, and Backlight.
90 percent of the time the problem is the Inverter.

The Inverter for the Pavilion dv6000z series of Notebook PC's is located inside the Display Assembly.

The Display Assembly is the
1) Display Enclosure Cover, (Plastic top of laptop),
2) LCD screen,
3) LCD Panel Frame, (Metal frame around LCD screen),
4) Display Bezel, (Thin plastic frame which surrounds the LCD screen in the front)
5) Camera Module
6) Inverter
7) Display Enclosure Cover Hinges (2)
8) Display Enclosure Cover Hinge Covers (2)
9) Wireless Antenna Transceivers and Antenna Cables
10) Microphone receivers and cables
11) Various mounting screws

[The Top Cover for a Pavilion dv6000z series Notebook PC is essentially the Palm Rest. The cover under the Keyboard]

With the Display Bezel removed the Inverter is located at the bottom.
(Display Assembly removed from laptop first)

HP Support > Pavilion dv6000z Notebook PC series> Manuals>Service Manual>

http://h10025.www1.hp.com/ewfrf/wc/manualCategory?lc=en&dlc=en&cc=us&lang=en&product=3224052&

One example of an Inverter for an HP Pavilion dv6000z series Notebook PC,

http://www.amazon.com/DV6000-DV9000-V6000-INVERTER-AS0231721C1/dp/B00480MXUS

Please post additional questions in a Comment.
Regards,
joecoolvette

Jun 11, 2011 | HP Pavilion dv6000z Notebook

1 Answer

My Dell Latitude D6000 just stopped. One night it was working just fine. I turned it off, went to bed. The next day, it refused to start up. It almost started up today, but shut off after a few seconds. I...


If by wont start up you mean the screen shows nothing and their are no errors you the motherboard on it is probably damaged beyond repair, and the laptop will need to be replaced. However, if you have an error about boot devices you may wish to look at this tip

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HI, i have sony vaio laptop. few months ago i face the problem that my computer LCD light. after starting 2 or 3 times it show the screen. it is running every time. i can see dim screen but after 3 or 4...


Hi there,

In your situation, you have the possibility of several different problems.

1. Your "Screen Inverter" is failing.
2. Your screen "LCD Panel" is failing
3. The "Video Controller Chip" soldered permanently to your motherboard is failing.

The first step in troubleshooting these problems would be to take your laptop to a friend's house who is using a desktop computer with a separate external monitor. Hook your laptop up to the external monitor and see if it displays normally on that monitor. If it does, you merely need to replace both the Screen Inverter and LCD Panel of your laptop and you'll be fine.

If, however, your laptop will not display on an exterior monitor, it means that your video controller on your motherboard has failed and you'll have to either get a new motherboard installed or consider replacing your laptop.

I'll be rooting for # 1 or 2.

Kind Regards,

Selk

Apr 29, 2011 | Sony VAIO Notebook

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HP Pavilion, Screen working, but extremely dark!


Hi,
As per your description, I find that the issue is with the LCD Backlight which is also called as LCD Inverter which lights up the LCD to show us the Display on the LCD Display.
If this Backlight is gone bad, you will be barely able to see the Display on the LCD.
Coming to the Noise you had mentioned above can be from the Cooling fans of the Notebook which will be spinning at high speed when the Notebook starts and will reduce gradually after few minutes.
I recommend you to try cleaning the Cooling fan vents using any Vacuum Cleaner or Air Blower.
I recommend you to contact any nearest HP Authorized Service Center and get the LCD Backlight replaced.
Hope this helps....

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I would bet your system has been overheating - that's why it kept shutting off. Now it may have overheated and killed your CPU or mainboard. These laptops require quite a bit of disassembly to get at the CPU. You will probably have to take it to a repair shop for further work.

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