Question about Toshiba Portege S100-S1133 Notebook

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Black components are mostly displayed as bright red instead.

Also occurs during startup such that think vantage background is bright red. This occurs on Lenovo Thinkpad X200.

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  • bzerk512_ace Jun 30, 2009

    I had NOT enabled the HIGH CONTRAST MODE, so that must not be the cause of the problem. The black components on the SCREEN are displayed fine when you adjust the position of the SCREEN (SCREEN about 30degrees from the base). But if the SCREEN position is greater than 30 degrees ( for example 90degrees) from the base then black components are displayed mostly as RED.

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Ensure that you do not have the HIGH CONTRAST MODE enabled in accessibility options

Posted on Jun 30, 2009

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My LG 42 HDTV appears to be having some problems with turning on - are there any known issues on this?


Hi Judith
A Turn on Problem or a Startup Problem?
I've written out some technical details below, but really... with a modern TV there really is nothing internally that the average person can do...... It is a Computer in disguise. It uses Firmware for Software. The video is transferred to Memory for display on a screen.... just like a computer. Only the dealer has the tools to diagnose the problem.
They may simply replace the Power Supply Module.

The trouble is modern TV's are not like the old fashioned analog television. They use an internal computer to pick up the digital data and place it into temporary memory where the CPU spends part of it's time converting it to the required format. 1080 High Definition or 720 etc.
So, think of it as a computer problem.
Most computers use a switch mode power supply to convert the AC to the required DC internal voltages required.
Even the On/Off switch is replaced by a digital on / off (1 or 0 Bit) digital signal to turn the machine on or off.
An Electrolytic Capacitor is often kept charged by the power supply. When the digital switch is pulled to ground, this causes the startup sequence (or bootup).
A leaky or capacitor can cause it to not turn on. An Electronics guy could check for leaky Caps (or bulging from top) and replace suspected components.
I would tend to suspect this type of fault first.
Now, normally if the start button works the CPU does a quick diagnostic before actually bringing the TV to life. The diagnostic may be failing.

Hope this shines some light on the Problem at least.
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How to turn off backlight on iphone 4


There is no separate "back light" setting like there used to be on some earlier phones.

In the Settings app of your iPhone, there is a section called "Display & Brightness". You can use that to make your phone's display brighter or dimmer, but as you have probably discovered, it dims or brightens both the foreground and the background elements together as one.

You can turn it all the way down, which is very dim and hard to see in normal indoor light conditions, but may be preferable in extreme low light conditions like in a nightclub setting, or in complete darkness.

Why isn't there a separate back light setting?
To fully answer this, I would probably have get into more than you ever wanted to know about displays.

First, there is really no background or foreground on today's smart phone displays. The foreground elements and background elements we see on the iPhone are really a graphic illusion created by lighting individual pixels with different colors. All of these pixels are on the same plane, so nothing is really behind or in front of anything else. It's just artistically drawn to look that way.

Brightness is simply an "intensity" setting applied uniformly across all of the underlying individual pixels within the display matrix, and has no relationship to color. For clarity, let's look at the difference between lightness in colors, versus display brightness:

COLOR LIGHTNESS is a matter of how much WHITE (all the RGB colors summed, for example) is present in a given color. This has nothing to do with display brightness.

DISPLAY BRIGHTNESS is a matter of how much LIGHT INTENSITY is applied uniformly across all pixels in the display matrix.

At zero display brightness, you would not see white any better than black, blue, green, red or any other color. You wouldn't see anything.

Why did you expect to be able to control the back light?

Prior to the smartphone era, the displays on early cell phones and pagers (and lots of other devices that had displays) had a lighted background that contrasted with dark foreground elements.

The background intensity was a separate setting on those devices, but that's because the background was the only thing that had intensity. The foreground elements were solid black LCD (liquid crystal display) segments that were used to form characters and very simple graphics and lines.

Everything we see on today's smartphone displays is dynamically drawn by lighting different pixels with different colors at different times. Individual pixels on a Retina display are nearly microscopic in size--they cannot be separately discerned by the eye.

Imagine a matrix of microscopic light bulbs, each of which can separately change to any of millions of colors and levels of brightness at any time, on command. Just imagine the sheer number and complexity of possible commands to control a Retina display!

Even if Apple wanted to provide a new feature that enabled us to separately control the perceived "back light", it would only be an illusion as well.

Such a feature would require some sort of complex algorithm to determine which pixels are involved in what you perceive as the "foreground" elements at any given time, so it could add intensity only to those pixels considered to be "background" at any given time.

Since "foreground" and "background" elements drastically change shape (and location) at any time, such a feature would be pretty daunting to implement.

You might be better off using a pure black graphic as your background image if your goal is to have more contrast to make the app icons stand out.

Cheers,

-=Cameron

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Screen is displaying Red background color with glittery pixels effect around the figures


Please change the T-CON board, if it did not fix the problem, you may have a defective LCD Panel.

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Have presario 6000. Would not boot but received message that new keyboard needed. Purchased "universal" aftermarket keyboard. New message "Hard drive failure imminent" and still would not boot to allow...


Hi,
Prepare to Diagnose the Computer
Perform the following actions to prepare the computer for troubleshooting a startup problem.

1. Remove the battery and AC adapter from the notebook.
2.Remove any optical disks (CD or DVD), and disconnect any external devices or peripherals such as USB devices, printers, docking stations etc.
3.Plug the AC adapter directly into a functioning wall socket.
4.Press the Power button to turn on the computer.

NOTE:After the battery, optical media and peripherals are removed, the Notebook PC may startup normally. If this occurs see Windows starts after the battery, optical media and peripherals are removed .

Symptoms and Resolutions
When the notebook stops responding or displays an error message, let me know what symptom that most closely resembles what is seen on the Notebook PC screen.

* Screen is blank with no cursor or text
*An error message is displayed on a black background
*An error message is displayed on a blue background
*PC stops responding on a red Compaq or blue HP logo screen
*PC Stops responding on the Windows logo screen
* The Microsoft Windows 'Advanced Options Menu' is displayed
* PC stops responding with a blinking cursor is displayed in the upper left corner of a black screen.
*Password is requested but password is forgotten or lost.
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Every time i boot up my acer aspire 5315 laptop I always get a black screen and the computer freezes?


Please try to reboot in Safe mode after Tapping F8 Key during start.

If the option for run in safe mode not appear you need to do it again.

After then, when you login at desktop, do the following:

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Disable the items which you think not necessary to come during startup.
THis will help you lot to reduce the time being taken in Startup.


Hope it will work for you.

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