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I have seen several Samsung's including 3 that were only a few months old at the time where it was the lamp---one was so dim it was very hard to even see the picture or that the screen was lit.
Two suggestions here: One of course would be to buy and gamble and replace the lamp.
What I found in two of the three cases was when I removed the lamp the glass pillar inside it was "bent" at a angle from heat or a natural defect--in both those cases a new lamp cured this dim picture issue.
Set will monitor the lamp and if too dim may shut set off or even blink for a prolonged period of time.
If the lamp is over 2 years or age (average life) or was replaced with a non-Samsung lamp you are going to have to take the gamble to try another one.
Inspect the lamp---that pillar supports the filament and if bent the lamp is suspect at best.
i have a wd62528 62" dlp hdtv that shows a picture but very dim. I have tried numerous things including factory reset and checking the lamp. I started to get a new lamp but was told if i have a dim picture getting a new lamp will do nothing. However, Mitsubishi support said that if i have a dim picture but was not continuing to get worse or darker, then they were 100% sure i just needed a new lamp. I'm confused. Will a new lamp solve my problem or no. i would just buy and try but it is very costly. please help
be sure and reset the lamp hrs. But you really need to make sure you haven't pushed the lamp connection in the lamp housing out of its cubby hole. I've seen this alot, the connection gets pushed in and when you think you have the lamp in, it's not really connected. Really the only way to check this is to remove the top cover. Before you do this though, one other thing that can happen is the lamp door gets mishapen due to the heat from the lamp and can cause the thing that pushes against the safety switch when the door is on not to depress it fully. you can power the unit up while holding the switch in with something non conductive to see if it is in fact the lamp door. anything beyond this is likely the power supply/ballast being defective, or the blower fan in the right rear of the unit not working.
You may have a defective CCFL backlight, it may have the following symptom: Screen flashs on red/pink and off. Picture stays on in red and slowly be come normal. Picture flickering with dim display or appear black. Picture flickering on and off. All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replacing the CCFL lamp. Connect an external monitor to your laptop and power the monitor up first then the laptop, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight. Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case. The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills. Check out www.lcdparts.net
Cleaning the mirrors will not increase the brightness much. I would double check the lamp setting in the Menu and also the setting of the picture and brightness settings. Many times these are adjustable independently for different inputs. Besides this, I would look at the Ballast and or the Power Supply to cause the problem. I would recommend a professional to look at it if it is not correctable from the Main Menu of the set.
Hope this helps,
Skyassoc
The backlight CCFL lamp provides the lighting for the LCD screen. If you have already adjusted the brightness to the max. setting and it is still dim, it means the CCFL lamp is is nearly worn out.
To determine if you have a LCD screen or video card problem, read this and follow the instructions.
Defective CCFL backlight, it may have the following symptom: Screen flashs on red/pink and off. Picture stays on in red and slowly be come normal. Picture flickering with dim display or appear black. Picture flickering on and off. All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replacing the CCFL lamp.
Connect an external monitor to your laptop and power the monitor up first then the laptop, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight.
Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Check out www.lcdparts.net for parts, repair service and DIY info.
Based on your post/description, I will initially suspect the inverter and/or the CCF Lamps since as you
posted "dim screen picture" indicating that there is ** backlight(s)
and/or it is **t receiving power from the inverter.
If the unit is
relatively new and under warranty, it may be to your advantage to have
it replaced or seek the services of their Service Center. Should you
want to do a DIY, it would be required that you be familiar with
electronic circuitry and components, use of a DVM and a soldering iron
and access to a service manual or at least a schematic diagram.
Incidentally, there are k**wn cases where similar issues could be resolved if you try lowering your display properties (resolution and refresh rates) but that would also include the powerlight changing colors.
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.
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