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Toshiba Satellite P200 display keeps flickering badly, when the screen is opened past 75 degrees, may be a loose connection. How do you check / look at the connector from the screen to the board?

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  • C J Quest Aug 27, 2009

    Unable to remove screen, removed all screws on the laptop, no joy.

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You have to rip apart everything carfuly, remove the four screws behing the runner covers on the screens lid.

Posted on Jul 30, 2009

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Toshiba Satellite P105-S9722 white screen on stat up


Don't assume. Diagnose.

Problem could be graphics chipset, Video Cable, screen Inverter, or LCD screen.

Graphics chipset:

1) Laptop OFF, monitor OFF, connect a VGA monitor to the VGA port, on the laptop.
(Back of laptop - Blue)

Example of a VGA Cable, and a VGA connector, (Port on laptop),

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

If you have a CRT type of monitor (Looks like a small TV), you can use it, or a flat LCD screen monitor with a VGA cable.

The Toshiba Satellite P105-S9722 Notebook PC, also has a DVI connector on the back of the laptop. (Next to the blue VGA port)
You can connect a flat LCD screen monitor with a DVI cable.

Example of a DVI Cable, and DVI connector,

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

2) Turn the monitor on. If a CRT type allow it to warm up.
Turn the laptop on.
By factory default the display should be on the external monitor.

If not;
Press, and hold down on the Fn key, (Bottom left), and tap once on the F5 key.
The F5 key is the Display Toggle-Over key.

You will see a list. It 'hot cycles' through the list, until you come to the external monitor device you are using.

http://shop.mcccomputers.com/network-modem-cards/6037-toshiba-satellite-p100-p105-p105-s6104-p105-s9722-video-board-256mb-ts15082.html

External monitor display shows no white screen?
Your graphics chipset is good.
Go on with the diagnoses.

Problem is with the Video Cable, or in the Display Assembly.
(Screen Inverter or LCD screen)

Video Cable:
The Video Cable attaches to the motherboard under the Switch Cover, and about at the F2 and F3 keys.
It then routes under the left Hinge, and up into the Display Assembly.

From there it connects to the screen Inverter, and back of LCD screen,

http://www.irisvista.com/tech/laptops/toshiba-satellite-p105/big/toshiba-satellite-p105-11.jpg


From;

http://www.irisvista.com/tech/laptops/toshiba-satellite-p105/take-apart-1.htm

http://www.irisvista.com/tech/laptops/Toshiba-Satellite-P105-P100/remove-lcd-screen-inverter-1.htm

Due to normal opening, and closing of the laptop, the Video Cable may become pinched, and pulled on.
This can lead to a simple loose connection of the Video Cable TO the motherboard, or TO the back of the LCD screen.

(The screen Inverter connection should also be checked)

Visual inspection will NOT do. You need to physically see if you can plug the motherboard connection, and LCD screen connection in.
It could be just loose enough you won't be able to see it, but will affect the display.

Sheath of Video Cable needs to be visually inspected for signs of damage. Signs of damage to the sheath, may also mean damage to the tiny wires inside the sheath of the Video Cable.
(Stretched/Broken)

Assurance that the Video Cable is not the problem, means checking out, or have checked out, with a multimeter set to OHM's, to run a continuity check of all the wires.
('Mom and Pop' computer store. See if they will check it)

Or simply replace the Video Cable. (After you fire up the laptop, and see if loose connections was, or was not the problem)

http://www.batterysupport.com/toshiba-satellite-p105-s9722-cable-p-377633.html


(Left side connects to LCD screen. Right/Top connector goes to motherboard. Right/Bottom connector goes to screen Inverter)

Video Cable checks out OK?
Go on to screen Inverter.

http://www.ebay.com/itm/TOSHIBA-Satellite-P105-S9722-laptop-lcd-Screen-Inverter-/250759700669


The plastic thin frame in front of the LCD screen, is the Display Bezel.
The screen Inverter is behind the Display Bezel, and mounted at a location towards the bottom of the LCD screen frame.

A screen Inverter is tested with a sensitive multimeter. Read fairly expensive,

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

It is for this reason that those who do not have access to a sensitive multimeter, usually just replace the screen Inverter.
(Also low cost, and ease of access to replace)

Screen Inverter checks out OK?
Problem is the LCD screen,

http://www.amazon.com/SATELLITE-P105-S6084-P105-S9722-P200-140-REPLACEMENT/dp/B007QEEYGE


For additional questions please post in a Comment.

Regards,
joecoolvette

[ Bet it's the video cable, or screen Inverter, that is the problem ]

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

A Backlight can be a CCFL, (Or two of them), or a series of LED's.
(Light Emitting Diode)

The Toshiba Satellite P105-S9722 Notebook PC, uses One CCFL for a Backlight.

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

Average thickness is 2mm. That is a little larger than 1/16th of an Inch.
Average length is almost as long, as the LCD screen is in height,

General example,

http://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/

A CCFL contains -> Mercury, just like Fluorescent lighting used in homes, and businesses.

A screen Inverter is used to convert the power from the laptop, for the Backlight, and LCD screen.
90 Percent of the Time the fault is a bad screen Inverter.

Primer over.

Oct 16, 2012 | Toshiba Satellite P105-S9722 Notebook

1 Answer

When I open my laptop lid pass 90 degrees, the screen goes blank


It should be a Problem of a loose conection.
if you feel you are good to take it apart there are a lot of tutorials on the web in how to take it apart and reattach the flex cable. (maybe even change it)
otherwise take it to a laptop specialist

Jun 07, 2011 | Toshiba Satellite P200-0TD00Y Notebook

1 Answer

I have a Toshiba P2oo Backlight goes out


The wire that connects the lid with the motherboard might be damaged, but not completely damaged as you use your screen normally, so i recommend that you check this connection.

Feb 01, 2010 | Toshiba Satellite P200-0TD00Y Notebook

3 Answers

Toshiba P200-1ee Screen fault


Hello, I have a Toshiba Satellite P200-rt2 that has the same issue. They told me that there's a part that connects to the monitor that needs to be replaced. It costs as much as the computer does. So, I have bought a new one. I want to know if there are other people with this issue. Maybe we can go to Toshiba with this issue.

Oct 21, 2009 | Toshiba Satellite P200-0TD00Y Notebook

1 Answer

Screen Flickers


Sounds like your screen is failing. Could be just a loose connector behind the screen (pressure changes the screen display), but best advice is to replace the screen.

Oct 04, 2009 | Toshiba Satellite M305D-S4829 Notebook

1 Answer

Remove screen on Toshiba Satellite 2450


It appears the hinge has come loose and possibly the video and/or inverter connection. Here as a disassembly guide for a different model, I'm sure how similar it is: http://www.irisvista.com/tech/laptops/Toshiba2435/sat2435_LCD.htm
Be sure to remove the battery and check the bottom of the laptop for any screws that may secure the cover.

Dec 06, 2008 | Computers & Internet

1 Answer

If I open my Satellite A105 display too far, it goes black.


Hi, This is definitely a loose connection problem.
Does the screen go completely black or just a part ?
If its just a part, LCD is defective. You may have to change the whole LCD screen. You can get one for ~180$ from ebay
If the whole is turning off, I guess the power cable might be little loose.
You can open the LCD panel and check if you know what you are doing.
Else take it to a normal technician and ask him to open the LCD panel and see it.
:)

Nov 17, 2008 | Toshiba Satellite A135-S2276 Notebook

1 Answer

Flickering screen and no display


thats the complaint of LCD inverter circuit...if u dont know to open it,then dont do any thing better thing is go to the nearest service center of toshiba and try to repair it if thats failed. u have to replace with a new inverter circuit.dont try to repair urself...thats all.

Dec 13, 2007 | Toshiba Satellite P25-S507 Notebook

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