Question about Toshiba Satellite L775-s7307 Laptop Computer With Windows 7

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Laptop screen lights, no display but exterior vga plays

Toshiba satellite l775 screen has somelight but zero display. A 2nd monitor works fine but defeats purpose of being a laptop. All tests say Intel video working. What's wrong?

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Either bad lcd panel or the power inverter for the lcd has gone bad.

Posted on Apr 01, 2014

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SOURCE: Toshiba Satellite 1800-911 DRIVERS

Hi,

Posted on Dec 04, 2008

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My toshiba satellite l645 wont display at power on even when i connect the external VGA and press the function Key and f5 no display. no beep codes even when the RAM is removed and the caps light beep once...


hi

to test if the lcd screen is faulty or if its the inverter

plug in another monitor to the external monitor plug

when you turn on the laptop if the 2nd monitor displays the desktop your lcd needs to be replaced

if the 2nd monitor is also black your inverter needs to be replaced
common problem

Aries

Oct 19, 2013 | Computers & Internet

1 Answer

Can't get Toshiba Satellite L775 to boot past "windows is loading files" screen


I assume you are doing a System Restore/Recovery? Have you removed the HDD and tested it? Perhaps the Recovery files are corrupt/missing? A bit more info needed.

Jul 03, 2013 | Toshiba Satellite L655-S5160 Laptop PC...

2 Answers

Can i just remove the monitor assembly toshiba laptop p5085d-s8935 and just use a n external monitor


You could do that. Here is an excellent guide to replacing that model laptop's lcd which will show you basically how to remove it as well.

http://www.laptopinventory.com/LaptopInventory.php/Toshiba/Satellite/P505D-S8935/LCD

Dec 07, 2012 | Toshiba Computers & Internet

1 Answer

Display divided into 3 parts


LCD screen cracked, and Three even strips going across? Doubtful. Haven't seen it but I always have my mind open.

Three strips that are irregularly shaped? Look like glass that has cracked?
'Jagged edges'?

LCD screen is broken.

Three even strips indicates to me, that there may be a problem with the Video Cable. Then the screen Inverter is next in the diagnoses.
My money is on the Video Cable.

ALL power removed, Anti-Static Precautions FOLLOWED, I would check out the graphics chipset first.

1) Laptop OFF, monitor OFF, connect a VGA monitor to the VGA port on the laptop.
Left rear side. This is an example of a VGA Cable, and VGA connector. (VGA port on a laptop ),

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

(Color of connector does Not matter. It is generally Blue, though)

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

2) Turn the monitor on. If a CRT type allow it to warm up.
Turn the laptop on.

There are at least 3 display options available;
1) Laptop internal monitor ONLY
2) Laptop internal monitor AND external VGA monitor
3) External VGA monitor ONLY

Press, and hold down on the Fn key, and at the same time tap once on the F5 key. (The F5 key is the Display Toggle-Over key)

No display on external VGA monitor?
Hold the Fn key down again, and tap once more on the F5 key.

Is the display on the external VGA monitor, the same as the internal monitor of the laptop?

Problem is the graphics chipset.

Display is fine on the external VGA monitor?
Problem is the Video Cable, screen Inverter, or LCD screen.

Video Cable:

A) http://www.irisvista.com/tech/laptops/Toshiba-Satellite-A105/big/Toshiba-Satellite-A105-14.jpg

Switch Cover removed, Keyboard removed. Shows you where the Video Cable plugs into the motherboard.

B) http://www.irisvista.com/tech/laptops/Toshiba-Satellite-A105/big/Toshiba-Satellite-A105-21.jpg

Palm Rest Cover you can see the white rectangular connector, for the motherboard side of the Video Cable, at the top left.
It's above the black cable, and near the screw hole.

The Video Cable leads from the motherboard, up through the left Hinge, and into the Display Assembly.
From there it connects to the screen Inverter, and back of the LCD screen.

http://www.ebay.com/itm/Toshiba-Satellite-A105-6017B0050801-LCD-Video-Cable-Genuine-OEM-Laptop-TESTED-/290754851160?forcev4exp=true&forceRpt=true

In the photo, (You can hover your mouse cursor on it to enlarge), the right side connector plugs into the back of the LCD screen.

The black connector to the far left connects to the motherboard.
The small white connector at the top with the Red, Green, Black, etc wires, connects to the screen Inverter.

(The small Black cable, that comes out from the black motherboard connector, is a Ground wire )

Due to the close proximity of the Video Cable to the left Hinge, it can be pulled on from just normal opening, and closing of the laptop over time.

This means the Video Cable connection on the motherboard side could be loose, or the LCD screen side, or both.

The diagnoses is to PHYSICALLY check BOTH connections. A loose connection at the motherboard, or at the back of the LCD screen could be so small in distance, that you will not see it with the human eye.

Could also result in damage to the Video Cable.
View the Video Cable with the Switch Cover removed, and see if there are any obvious signs of damage to the sheath of the cable.

If there is there could be damage to the tiny wires inside the Video Cable. (Stretched/Broken)

Use a multimeter set to OHMs, to check all wires inside the Video Cable for continuity, or have a 'Mom and Pop' computer store check it for a few bucks, or replace the Video Cable.

Video cable connections are tight? Video cable continuity check checks out OK?
Screen Inverter.

The test for a screen Inverter is to use a sensitive multimeter.
Read fairly expensive.

http://www.fonerbooks.com/test.htm

Not having access to a sensitive multimeter that you can use, means just replacing the screen Inverter. Seems like 'part changing', and it is, but you have to work with what you've got.

http://www.sparepartswarehouse.com/Toshiba,Satellite,A105,Laptop,Inverters.aspx

Find THE model number for your laptop, and the correct screen Inverter. A screen Inverter, and an LCD screen are a MATCHED unit.

Screen Inverter is checked out to be OK, or replaced, and symptoms are still the same, the problem is the LCD screen.

Remember, the first part of the diagnoses was to see if the divided parts were EVEN going across, or jagged and irregularly shaped.

Jagged in shape, and not even strips going across, means cracks in the LCD screen.
Replace.

http://www.irisvista.com/tech/laptops/Toshiba-Satellite-A105/remove-replace-LCD-screen-1.htm

[ Main article for A and B links above;

http://www.irisvista.com/tech/laptops/Toshiba-Satellite-A105/remove-motherboard-1.htm ]

For additional questions please post in a Comment

Regards,
joecoolvette

Oct 22, 2012 | Toshiba Sattelite A105-S2051 Notebook

1 Answer

Toshiba satellite monitor is scrambled, how to fix?


Check to see if the problem is the screen Inverter, or the graphics chipset, or the LCD screen.
Use an external monitor as a test.

If the screen of the external monitor shows a scrambled display you have a problem with the graphics chipset.

If the screen of the external monitor does Not show a scrambled display, you have a problem with the screen Inverter, or the LCD screen.

90 PERCENT of the time the fault is the screen Inverter.


External Monitor;
1) You can use a CRT monitor, (Looks like a small TV), as a VGA monitor,
Or
2) You can use a flat LCD screen monitor that has a VGA cable.

A) Laptop OFF, and monitor OFF, attach the VGA cable from the External monitor, to the VGA port on the Toshiba Satellite A205 series Notebook PC.

This is an example of a VGA cable, and it's connector, and a VGA connector on the laptop,

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

B) Turn the monitor on. If it is a CRT style let it 'warm up'.
Turn the laptop on.

C) The display is supposed to automatically show up on the external monitor.
If it does not, press, and hold down on the Fn key, and also press the F5 key.

Still no?
Holding the Fn key down, tap the F5 key again.

Display good on external monitor? Problem lies with the screen Inverter, or the LCD screen.
Either OR.

Primer:
An LCD screen does not produce light. It needs an additional light source.
A Backlight is the additional light source.

A Backlight is a CCFL.
Cold Cathode Fluorescent Lamp.
Similar to Fluorescent lighting used in homes, and businesses, but on a MUCH smaller scale.

An Inverter (screen Inverter) is used to convert the electricity provided by the laptop, for the LCD screen, and Backlight.

As previously stated, 90 PERCENT of the time the fault is the Inverter.

Laptop open looking at the display assembly, the plastic thin frame in front of the LCD screen, and surrounds the LCD screen, is the Display Bezel. (Resembles a picture frame)

The Display Bezel is removed to access the screen Inverter.
The Inverter is right behind the Display Bezel, and located at the bottom area of the LCD screen.

The Display Assembly has to be removed from the laptop, to remove the Display Bezel.
Toshiba's term for the Display Bezel is Display Mask.

The Toshiba Satellite A205-S5804 Notebook PC is one of the Satellite A205 series of Notebook PC's.
This is a link to a free Service Manual for a the Satellite A205 series of Notebook PC's,

http://www.tim.id.au/blog/tims-laptop-service-manuals/#toc-toshiba

Scroll down to the second Satellite heading. The one that begins with Satellite A10.
Scroll across, and click on A200.

After you click on A200 it may take as long as 30 seconds before the first page comes up.
It may also take additional time for the file to fully download.

At the top of the PDF file is the page number box. It is to the right of the Down Arrow.
Go to Page 146.
4.10 Display Assembly

Page 151 shows how to remove the Display Mask.
4.11 Display Mask

Page 153 deals with the screen Inverter.
4.12 FL Inverter Board

Takes a really sensitive (Read fairly expensive) multimeter to test an Inverter.
Due to the low price, and ease of replacing, the screen Inverter is replaced to test whether the old one is bad.

Example of a screen Inverter (FL Inverter Board) for a Satellite A205-S5804 Notebook PC,

http://www.batterysupport.com/toshiba-satellite-a205-s5804-inverter-p-216526.html

Compare to the price of a replacement LCD screen,

http://www.laptopscreen.com/English/model/Toshiba/SATELLITE~A205-S5804/

To summarize so far;
1) Display shows good on external monitor. Replace screen Inverter. Still the same problem? Replace the LCD screen.

2) Display on external monitor is scrambled also?
Fault lies with the graphics chipset.

Chip and Chipset are slang terms for I.C.
Integrated Circuit,

http://en.wikipedia.org/wiki/Integrated_Circuit

The graphics chipset is a GPU.
Graphics Processing Unit,

http://en.wikipedia.org/wiki/GPU

The GPU for a Toshiba Satellite A205-S5804 Notebook PC (Part Number PSAF3U-0NR00V), is an Intel (Mobile) GL960 Express,

http://en.wikipedia.org/wiki/List_of_Intel_chipsets#Core_2_mobile_chipsets

It is soldered directly to the motherboard, therefore it is Integrated Graphics.

{Integrated Graphics is also known as OnBoard graphics.
ON the motherBOARD.
The GPU is soldered to the motherboard.

In comparison if the GPU were soldered to a removable adapter card, it would be a graphics card, and Not integrated graphics }

This means if the graphics chipset is found to be bad, motherboard replacement is the solution.

{ Disassembly guide,

http://www.irisvista.com/tech/laptops/toshiba-satellite-a205/laptop-disassembly-1.htm }

For additional questions please post in a Comment.

Regards,
joecoolvette

Nov 05, 2011 | Toshiba Satellite A205-S5804 Notebook

3 Answers

The monitor on my Toshiba P25-S5093 does not have any display of any kind; all black. I have display using external monitor.


Hi,
Does the display show anything before you enter windows? If yes, then press the key to transfer video back to your original screen once you enter windows. It should be the function key "Fn" + F5 - F8. looks for the icon which shows a monitor or says "CRT/LCD".
If it doesn't show anything before you enter windows I'm afraid your screen needs to be replaced. Good luck.

Mar 08, 2011 | Toshiba Satellite P25-S5093 Notebook

2 Answers

Screen will not come on.


If the Toshiba appears to boot up but the screen is black then it could be a back-light problem. For instruction to determine the fault and fix please follow my instructions - click on this link :-
http://www.fixya.com/support/r3598095-faulty_laptop_lcd_screen

Dec 24, 2009 | Toshiba Satellite P105-S6104 Notebook

1 Answer

HOW DO I REPLACE MY MOTHERBOARD IN MY TOSHIBA SATELLITE


you mean the problem is the motherboard?
....THE SCREEN WAS BLACK THE YELLOW LIGHT ON THE FRONT IS BLINKING BUT THERES NOTHING ON TH SCREEN AT ALL...
what you do...
first, try the to hook up the 15 pin vga in the laptop to the monitor..if the display is commin in the external monitor..it means NO need to replace the motherboard..you must check the lcd..or the cable or the FL inverter...you can e-mail me if you want to know more about this: genxtuae@hotmail.com

Jan 05, 2009 | Toshiba Satellite A15-S127 Notebook

1 Answer

Toshiba satillite A215 won't boot up. No sounds from drive, fan, nada, zip. worked fine yesterday.


connect to the external monitor through the vga port of the laptop, check the display, if the display is there then its the problem of your laptop screen
like the soluton or not rate it please

Oct 17, 2008 | Toshiba Satellite A215-S7422 Notebook

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