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I have replaced a toshiba 1550cds lcd screen with a IBM LCD screen same size however when I boot my computer I cannot see any data but LCD light working fine

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The problem is the LCD cable that is connected , to the motherboard , may not be connected properly or is not compatible with the boards display signal.Check connections again

thanks
Mandeep

Posted on Apr 25, 2008

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IBM Thinkpad T41 beep sound on system startup


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Dec 26, 2012 | Dell Optiplex GX620 Pentium 4 3.4GHz (Open...

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Screen gets black


Typically the graphics card went out. Other possibilities include, loose monitor cable or short in the cable, or incorrect graphics driver installed or missing, or monitor is shot (least possible). Things to look for: When booting up are you able to see words in the monitor or is there a series of non-regular error code beeps? If beeps then most likely your graphics card is either loose or fried, or incompatible. If you it works fine, but the light on the monitor turns orange and screen goes black, then it's most likely a loose monitor data cable or there is a short in the cable, or monitor's power cable is loose. Then check both connections, power and data on the monitor, and also where it hooks to the computer make sure it's screwed in snug.

Jan 13, 2012 | PC Desktops

1 Answer

Screen


I assume your computer boots up, the hard disk spins and the hard disk LED light flashes.
If so then you may have a 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

Sep 11, 2009 | Sony VIAO P4 PCV-RS712 3.0GHz 512MB 200GB...

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Hi there, I have a toshiba satellite M60-BK3 Laptop. Is only four years old and from couple of days my LCD display is going on standby mode very fast. I try pressing and releasing that little switch which...


A couple things to try, 1 is boot the system in the safe mode (F8 menu at boot) and see if the LCD turns off there. You can also attach an external monitor and see if the external looses video too.
If the system looses video in the Safe mode and doesn't loose video with an external monitor, then the LCD backlight is likely failing
LCDs run about $100 to $150 on ebay

Jun 23, 2009 | PC Desktops

1 Answer

Toshiba equium A100-306


try function key for lcd it may be in presetaiton mode by mistake
or is lcd on / come on bright then go dim / dark just very dim if so your backlight is out replace lcd

Oct 24, 2008 | Toshiba Equium 7100S PC Desktop

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Screen as lines coming down screen of my toshiba satellite laptop


Boot the computer in BIOS and if you sill have lines than the LCD is leaking.

To boot to BIOS tap "F2" OR "F10", multiple times as soon as you hit the power button to turn on the computer/

Regards

Sammy

Aug 28, 2008 | Toshiba PC Desktops

1 Answer

Toshiba Satellite P25-S5092/ Computer will come on, but screen will not work. Wondering if it is most likely the LCD screen itself, the backlight or something else.


Hi,

If you have deduced that indeed the Toshiba Satellite P25-S5092 will boot and therefore operational except no display on the screen, you can always verify by connecting an external monitor. You of course would need to press Fn + F? (the F key with the small monitor icon).

As to the LCD screen having no display, often this could either be the CCF lamps (cold cathode florescent) and/or the inverter that powers it. One way to verify this is by shining a flashlight obliquely to the screen and a portion of your desktop would show albeit very very dark. Often, it is the inverter that fails. In some instances it could even just be a cold solder, loose connection or capacitors that have dried up, leaky or blistering.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

May 18, 2008 | Toshiba PC Desktops

1 Answer

How to replace my backlight, for a compaq 2500


Your laptop's LCD is illuminated by cold-cathode bulbs, often times a specific size for fitting purposes within your laptop's screen (as size constraints and cosmetic differences can leave little to no room withing the top lid for standard bulbs).

Replacing the back-light bulbs requires the original parts, or replacement as approved by the manufacturer. The first place I would start would be contacting HP (who now owns compaq) at 1-800-hpinvent and inquiring as to the cost for just a replacement screen for your model. Otherwise, you can order one from eBay or some other similar online resource.

The actual installation is quite simple, but it requires about 15-20 minutes of time, and three or four specific tools.

You have to disassemble the top lcd beveled casing, you have to detatch the lcd from the video flex cable that runs through the hinges of the unit and underneath the keyboard bevel. And re-attatch all said parts when you are complete. Keep track of the screws you remove in order to release the casing. And on the screen, often times those little rubber dots along the LCD screen actually need to be removed to locate several more screws.

That solution is if you purchase the entire LCD replacement contained together, which can be considerably more expensive than just replacing the back light. But finding the compatible parts to replace your LCD's defective ones might be close to impossible.

A quick search to help explain the process of replacing the cathode bulbs brought up this website via google:

http://www.inventgeek.com/Projects/shorts/overview.aspx

It has pictures that help illustrate the process for a standard screen. You would modify the instructions for your laptop's LCD screen.

If you do purchase a replacement LCD kit, you can always bring it to a Geeksquad technician and request an estime, or shop around to find a certified repair center that will install it for you.

Hope that helps.

May 01, 2008 | PC Desktops

1 Answer

My monitor comes on for one second then goes black. The green light stays on the whole time.


Check the cables, make sure it is secure on both ends. Also see if you pull up the Monitors on screen menu.

As long as the light is green, that means there is a signal. it could be a bad monitor. Shut off all the lights in the room, then grab a Flashlight and hold it against the LCD screen while it boots into windows. Can you see the desktop now, but very dimm? If you can see the desktop, then connect Your PC to another monitor (if u have one or a friends, perhaps) and boot it up, can you see the desktop on the other monitor fine?, then we just ruled out a Bad video card and narrowed it down to either a Bad Inverter in the Screen or LCD back light issue.

probally not worth fixing, because replacement LCD's arent cheap. nowadays at the right sale you can buy a Brand new LCD monitor for as little as $199


good luck,

djEnigma

Apr 01, 2008 | PC Desktops

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