Sony Bravia KDL-40Z4100 The screen is very white with some vertical lines. Picture is not clearly visible. I also played a DVD with same result.

Check for bad connections first by plugging and unplugging all various times to remove any oxidation or corrosion. If still no go, then the anomaly is caused by the T con board.

T'Con board suspected. Contact the authorized service center for Sony.
If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/

LOD (lines of death) are a known service issue with the Sony bravia line of TV's contact Sony and cross your fingers. Wish I had better news for you. I had a 52w4100 and Sony arranged me with a service center to get it taken care of.

It's a connection inside the TV that's faulty. It could be as simple as reseating the ribbon cables that connect the control board to the glass display. Or it could be that the fault is on the board and needs to be replaced. The fact that the problem comes and goes should tell you it's fixable.

Well if the panel is bad it would not clear up in any situation, so its not the panel. most likely the t-con board or just poor connections inside. Julio Millenium TV in Las Vegas.

It can be either the LCD controller board, or worst case the LCD panel, symptom of bad panel is vertical lines from the top to the bottom of screen, and it will get more lines as time goes by.
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KDL40Z4100 Product Features

• 16:9 Full HD 1080p Resolution (1920x1080p) LCD Panel
• Motionflow 120Hz; improves TV & DVD viewing
• DMeX compatible; allows seamless feature upgrades
• DLNA® Compliant - view photos from another room
• HDMI x4, HD Component x2, PC Input

Technical Details

• Brand Name: Sony
• Model: KDL-40Z4100/B
• Display Technology: TFT active matrix
• Display Size: 40 inches
• Image Aspect Ratio: 16:9
• is_hdtv_compatible: Y
• speakers_included_description: 2 speakers
• Height: 23.9 inches
• Width: 37.2 inches
• Depth: 2.8 inches
• Weight: 39.7 pounds
• Refresh Rate: 120

KDL-40WL140 Product Features

• 16:9 Full HD 1080p Resolution (1920x1080p) LCD Panel
• Motionflow™ 120Hz - clear, smooth motion for DVDs, TV
• DMex ™ compatible; allows seamless feature upgrades
• Enhanced XMB™ with 3D graphics incl. TV Guide
• HDMI™ x4, HD Component x2, PC Input

Technical Details

• Brand Name: Sony
• Model: KDL-40W4100
• Display Technology: TFT active matrix
• Display Size: 40 inches
• Image Aspect Ratio: 16:9
• is_hdtv_compatible: Y
• speakers_included_description: 2 speakers
• Height: 25.4 inches
• Width: 38.8 inches
• Depth: 4.3 inches
• Weight: 44.1 pounds
• Refresh Rate: 120

Bottom line for the extra connectivity and DLNA certification i would go with the
Bravia Z-Series KDL-40Z4100/B 40-Inch 1080pBecause if you connect this to your in home network you can stream music videos and music off you PC onto your TV without the need for extra wired or memory cards etc.

Otherwise if you don't need this feature the other options are identical on the other TV so it is just as good a choice.

Hello,

The line should be visible, even with the television off. It is called "de-lamination" of the LCD panel, and occurs in lines, usually vertical, on the screen.

The panel does need to be replaced. You can contact Sony at 1800-222-SONY. They are good people, and should be able to help you.

Hope this helps...

The panel or TCON board has failed, the solution is the same replace the panel. Not worth the cost, get a new TV