Question about Sony PFM-42B1 42 in. HD-Ready Plasma Television

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SONY PFM42B1 THE PLASMA DISPLAY JUST DOES NOT SEEM TO HAVE THE PUNCH IT ONCE HAD DESPITE CONTRAST & BRIGHTNESS CONTROLS...IS THERE A WAY TO RECHARGE THE PHOSPHORS FOR A BETTER PICTURE????

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Just check - easiest with another tv if you have one that the signal source you are using is not the cause of the dimming. Also check that the voltage supply to the set is at the correct level - unlikely but a slightly lower voltage on the power circuit could dim your picture. The phosphor in a plasmascreen is generally a thin coating inside each of the tiny glass pockets which contain the plasma gas mixture (each of which becomes a pixel when activated). Unless you could open up each one of the pixel pockets and recoat the inside (not recommended) the answer to your question is no. Since the picture is made with phosphor, engineers can accurately predict the geometric decline of the phosphor?s potential brightness. Note that while the brightness declines slowly, the phosphors never actually burn out. Also, note how the rate slows over time. The rate of decline points to a specification called ?Life to Half Brightness? or LTHB. The half life ranges from about 10,000 to 60,000 hours, depending on model, it is about the same as you?d expect in a high-quality, properly calibrated TV or studio monitor.(see attached graph). Here is the link to the user manual for your set if you need it; http://esupport.sony.com/perl/model-documents.pl?mdl=PFM42B1 Check page 97 of the pdf (page 45(GB) of the manual) - it explains the self diagnosis feature. Sorry I couldn't find the details of the resulting flashing light's meaning online - you need to contact sony with the results to find out for sure if your screen is the problem. Hope this helps - sorry if bad news :)

Posted on Aug 05, 2007

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Posted on Jan 02, 2017

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2 Answers

How do I alter the colour, brightness, and contrast?


Go to menu, go to screen settings or display settings. Should bring up the sharpness, contrast, color, brightness controls. Follow directions on screen to adjust. Hope this helps!

Jan 29, 2016 | Televison & Video

1 Answer

HOW TO SET BRIGHTNESS OF THE SCREEN?


Hi,

Dear User...

You can adjust the brightness and contrast of your monitor to improve the readability of text and to make digital pictures appear more like they'll look when printed.

To improve the results when adjusting the brightness and contrast settings for your display, use Display Color Calibration. (Display Color Calibration helps you adjust these color settings and others.) For more information about calibrating your display color in Windows, see Calibrate your display.

The way you adjust brightness and contrast varies and depends on your specific display.

Brightness and contrast buttons on the front of the monitor. Some monitors have brightness and contrast controls on the front and use the standard symbols shown in the following image.


On-screen menu. You can change the brightness and contrast settings for some displays by using an on-screen menu, and then setting the brightness and contrast in the resulting menu. Many times, you can view the on-screen menu by pressing a button-possibly labeled Menu-on the front of the monitor.



Thanks....

Feb 07, 2013 | Computers & Internet

1 Answer

Unable to reduce brightness windows7 ultimate hp1670


laptop ot desktop monitor ?

Adjust your monitor's brightness and contrast

You can adjust the brightness and contrast of your monitor to improve the readability of text and to make digital pictures appear more like they'll look when printed.


To improve the results when adjusting the brightness and contrast settings for your display, use Display Color Calibration. (Display Color Calibration helps you adjust these color settings and others.)

The way you adjust brightness and contrast varies and depends on your specific display.

Brightness and contrast buttons on the front of the monitor.


Some monitors have brightness and contrast controls on the front and use the standard symbols shown in the following image.

Brightness and contrast symbols

On-screen menu. You can change the brightness and contrast settings for some displays by using an on-screen menu, and then setting the brightness and contrast in the resulting menu. Many times, you can view the on-screen menu by pressing a button-possibly labeled Menu-on the front of the monitor.


Laptop display. Laptop displays don't have brightness or contrast buttons on the front.

For a majority of laptops, there isn't a control for setting the contrast.


However, you can set the brightness of many laptops by pressing and holding the Fn key, and then pressing a function key to decrease brightness ( ) or increase brightness ( ).

http://windows.microsoft.com/en-US/windows7/Calibrate-your-display#

When using Display Color Calibration on a laptop, set the display to the maximum brightness setting.


Adjusting brightness automatically using adaptive brightness

Adaptive brightness is a feature in Windows that uses a light sensor to automatically adjust the display brightness to match the lighting conditions in your computer's surroundings.


To use adaptive brightness, you must have light sensors installed and enabled on your computer.


To determine if your laptop or computer monitor supports adaptive brightness, look for the Enable adaptive brightness setting in Power Options (mentioned in the following procedure) or check the information that came with your computer.


To turn adaptive brightness on or off

Open Power Options by clicking the Start button , clicking Control Panel, clicking System and Security, and then clicking Power Options.


Under any plan, click Change plan settings.

Click Change advanced power settings.

In the list, expand Display, and then expand Enable adaptive brightness.


To turn adaptive brightness on or off when your computer is running on battery power, click On battery, and then, in the list, click On or Off.

To turn adaptive brightness on or off when your computer is plugged into an outlet, click Plugged in, and then, in the list, click On or Off.

Click Apply. Click OK.


hope this helps

Jul 26, 2012 | HP...

1 Answer

Digital clock display read out is EXTREMELY dim even after adjusting brightness and contrast controls


Hello Jinx55,
the problem is the display unit itself or the cable that goes from the display to the electronic (Most likely the dispaly itself).
The display will need to be replaced. You can contact Miele directly at
(800) 843-7231

May 19, 2009 | Miele Coffee System

1 Answer

Brightness/Contrast Adjustment


try going to the setup screen button left of adjustments







try going to the set up menu on the left of the buttons come down to the slider control just above the information icon then go across to color reset hope this helps regards Jim







Mar 12, 2009 | Samsung SyncMaster 2253BW LCD Monitor

1 Answer

Dark screen


If you are unable to change the contrast with the 'fn' key and the brightness controls, usually represented in the top row of keys as a sun icons, one brightens, one dims. You may have a bad brightness/contrast inverter in your display. It's a small circuit board in the display that controls the brightness. They do fail. You can find them for most models but depending on your technical ability, they can be a little tricky to change.

Jul 26, 2008 | Compaq Presario V4000 Notebook

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