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How to replace an lcd toshiba L455-S5980 screen?

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If you need to ask "how", then the answer is to take the LCD screen to a qualified technician, for proper and safe disassembly/repair/reassembly of the unit -- it simply is _not_ a "do-it-yourself" project.

Posted on Sep 15, 2010

  • ron6962 Mar 31, 2011

    Not a helpful answer. It is definitely a "do-it-yourself" project "if' you have a repair manual. That's the real question, since Toshiba does not publish one for this model.

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My Toshiba 15.6 inch screen Satellite L455 laptop is not showing ANYTHING! It's just black and other colors on the screen. How do I fix that?


Is the keyboard light coming on if its on then connect the vga. Connector to a monitor and check if display is ok

Oct 22, 2013 | Toshiba Satellite L455-S5009 laptop

1 Answer

What's your problem?When I try to boot my Toshiba L455-S5975 all I can get is a black screen and a blinking cursor. What can I do to solve this problem?


Try turning on your laptop and then pressing the f8 key repeatedly, then you should be presented with a set of options, one of these should be safe mode, unless you are trying to factory reset, but anyway if that doesnt work you could try turning it on but pressing 0 (zero) instread of the f8 key

Jun 16, 2012 | Toshiba Satellite L455DS5976 Notebook

1 Answer

Video on my toshiba L455=s5009 comes on for a few seconds then blacks out


From your brief diagnoses stated, it sounds like a bad Video Cable.

The Video Cable routes from the motherboard, across one edge of the Fan Assembly, and under the left Hinge assembly,

http://www.irisvista.com/tech/laptops/Toshiba-Satellite-Pro-L450-L455/big-body/laptop-disassembly-19.jpg

With just the usual opening, and closing of the laptop, the Video Cable's sheath may be damaged. This means the tiny wires inside the sheath may be damaged.
(Stretched/Broken)

http://www.irisvista.com/tech/laptops/Toshiba-Satellite-Pro-L450-L455/laptop-disassembly-1.htm

http://www.laptoprepairparts.com/html/details.asp?ref=1860&category=cables

Or it may be the screen Inverter that is damaged, or going out,

http://mcccomputers.com/shop/lcd-inverters/3666-new-toshiba-satellite-l455-s5009-l455-s5045-lcd-inverter-pk070006t20-k000087330.html

Or the LCD screen assembly.

Could be the graphics chipset.

Diagnose.

1) Laptop OFF, monitor OFF, connect an external VGA monitor to the laptop's VGA connector, on the back of the laptop.

[ RBG (Monitor) port ]

You can use a CRT monitor (Looks like a small TV), or a flat LCD screen monitor if it has a VGA cable, for the external VGA monitor.

[ Example of a VGA cable, and a VGA port (Connector),

http://en.wikipedia.org/wiki/VGA_connector ]

Turn the external VGA monitor on. If a CRT type allow it to warm up.
Turn the laptop on.

By default the external monitor should show the display, also.
IF not;
1) Press, and hold down on the Fn key, and simultaneously tap on the F5 key. (The F5 key is the Display toggle-over key)

Not showing on the external VGA monitor? Perform the above procedure again.
There are several display options.

External VGA monitor also show the same symptoms?
Bad graphics chipset. Replacing the motherboard is the most cost effective method, and easiest method.

External VGA monitor does Not show these symptoms?
Problem is the Video Cable, or screen Inverter, or LCD screen.

Due to movement of the LCD screen, which means movement of the Video Cable, my money is on a bad Video Cable.

(A Video Cable can be unplugged partially, real easy, on the back of the LCD screen.
It MAY look plugged in tightly, but may not be.

It can also be unplugged real easy when assembling the Display Assembly, to reinstall back on the laptop )

Check the Video Cable's wires with a multimeter. Perform a continuity check of all wires in the cable. (Multimeter set to Ohms)

Have an assistant also gently wiggle the cable, as you are testing. See if there is an intermittent break, due to a stretched/broken wire.

Or just buy a replacement Video Cable, and use it.

For additional questions please post in a Comment.

Regards,
joecoolvette

Feb 04, 2012 | Toshiba Satellite L455-S5009 laptop

1 Answer

Screen doesnt come on


If your laptop appears to boot up and the hard disk LEDflashes, then the problem is probably a back light fault. This can be a faultyinverter or a faulty CCFL lamp. Please click on this link and follow myinstructions to identify the fault and possible fix :- http://www.fixya.com/support/r3598095-faulty_laptop_lcd_screen

Dec 07, 2011 | Toshiba Satellite L455-S5000 L455-S5008...

1 Answer

Hi my toshiba L455-S5045 won't power on, I've


This clearly shows that you have a defective motherboard and it needs to be replaced. Try contacting Toshiba support for this, hope this computer is still under warranty.

Jun 30, 2011 | Toshiba Computers & Internet

1 Answer

I am in need of a repair manual for a Toshiba Satellite L455-S5975 laptop in order to replace the LCD screen. I have searched everywhere, but no luck. Does anyone have a source? Thank you.


Not sure if you will find one... Process on toshibas is:

Pop top cover (sometimes also secured with a few screws on side or bottom of laptop) near monitor base above keyboard to access LCD cable and mount screws
Unplug cable and remove monitor mounting screws (Under plate, on back where cables plugin, and sometimes on bottom)
Take monitor (on flat surface) and remove screw covers with needle so you can put them back on later.
Remove all screws
Use plastic credit card and run around outside lip of screen case until removed
Remove LCD mounting screws
Remove LCD and inverter
Remove LCD brackets and inverter from panel
Replace panel and start working backwords.

Mar 31, 2011 | Toshiba SATELLITE L455-SP5016M LAPTOP LCD...

1 Answer

Blank screen on my toshiba l455


Options:
* Try connecting it to an LCD or CRT monitor if it has display. If theres a display the you need to replace your laptop LCD but if no display then try the following:
- Clean the memory.
- Contact a technician to check the the internal parts like processor and Graphic chip.

Mar 28, 2011 | Toshiba Satellite L455DS5976 Notebook

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