Screen is damaged and unreadable

A completely white screen with white vertical lines on your Mitsubishi WD 77731 TV can be an indication of several possible issues. Here are some potential causes:

1. Faulty T-Con board: The T-Con board is responsible for processing the image signal and distributing it to the screen. If the T-Con board is faulty, it can cause the white screen and vertical lines issue.
2. Loose or damaged cable connections: Loose or damaged cable connections can interfere with the transmission of the image signal, causing the white screen and vertical lines issue.
3. Failed backlight: The backlight of the TV illuminates the screen from behind. If the backlight has failed, it can cause the screen to appear white.
4. Damaged LCD panel: The LCD panel is the display screen of the TV. If the panel is damaged, it can cause the white screen and vertical lines issue.

To troubleshoot the issue, you can try the following steps:

1. Check the cable connections: Make sure that all cables connecting the TV to the source device (such as a cable box or gaming console) are properly connected and undamaged.
2. Power cycle the TV: Turn off the TV and unplug it from the power source. Wait for a few minutes, then plug it back in and turn it on.
3. Check the T-Con board: If the T-Con board is faulty, it may need to be replaced. You can check for any visible signs of damage or contact a professional to diagnose and replace the board if needed.
4. Check the backlight: If the backlight has failed, it may need to be replaced. You can shine a flashlight on the screen to see if there is any image visible, which would indicate a failed backlight.
5. Contact a professional: If none of the above steps resolves the issue, you may need to contact a professional for further diagnosis and repair.

Those lines of pixels aren't commanded properly. Dismantle the unit completely and reseat the cable that goes top the screen - if that doesn't fixes it then the screen itself is damaged, it will have to be replaced.
If your reader is less than one year old take it back to the dealer - it's still under warranty and they will fix it for free.

Hello,

IF YOU HAVE A SOLID BLACK LINE RUNNING VERTICALLY THEN YOU HAVE A FAULTY MATRIX INVERTER. IF CENTRAL THE MAIN VERTICAL INVERTER NEEDS CHANGED. LEFT = LEFT VERTICAL INVERTER RIGHT=RIGHT.........

ANOTHER WAY TO GET THIS FAULT IS WORN OR DAMAGED RIBBON/PLASTIC GOING FROM THE SCREEN MATRIX TO THE INVERTER

I hope this will help to solve the problem...

Hello,

IF YOU HAVE A SOLID BLACK LINE RUNNING VERTICALLY THEN YOU HAVE A FAULTY MATRIX INVERTER. IF CENTRAL THE MAIN VERTICAL INVERTER NEEDS CHANGED. LEFT = LEFT VERTICAL INVERTER RIGHT=RIGHT.........

ANOTHER WAY TO GET THIS FAULT IS WORN OR DAMAGED RIBBON/PLASTIC GOING FROM THE SCREEN MATRIX TO THE INVERTER
I hope this will help in solving the problem....

Hello,

IF YOU HAVE A SOLID BLACK LINE RUNNING VERTICALLY THEN YOU HAVE A FAULTY MATRIX INVERTER. IF CENTRAL THE MAIN VERTICAL INVERTER NEEDS CHANGED. LEFT = LEFT VERTICAL INVERTER RIGHT=RIGHT.........

ANOTHER WAY TO GET THIS FAULT IS WORN OR DAMAGED RIBBON/PLASTIC GOING FROM THE SCREEN MATRIX TO THE INVERTER

Hope this will help out in solving the problem....

Try to hold the slide key for 15 sec. It will reboot your kindle. If black patch is not gone even after that, It's a hw issue. Screen might require to be changed. If it's in warranty Amazon will do it free. That's what i have heard.

if line is horizentle check vertical ic supply and out put capcitor if line is vertical check yoke wirsand cap 560k at horizentle yoke and any print brunt

The blob is a phisically damaged part of the LCD screen. Unfixable, the screen must be replaced and it will be expensive.

The problem is that the printhead is damaged and will have to be replaced. Assuming there are no other letters in the TLP2844 model number you gave then the part number for the printhead is G105910-053 and will cost around $100. Hope that helps.

this symptom is what we called vertical fold-over. vertical fold-over is characterised by a white horizontal bar on the bottom or top of the raster due to the concentration or compression of the trace lines. it an image is present, the bottom or top portion is fold over. this is caused by a vertical deflection current with poor linearity, which compresses the trace lines at the bottom or top of the screen. this symptom is is caused by a defective sawtooth wave genetator circuit, or improper biasing or defective feedback circuit of the vertical drive or vertical output transistor/ic. the negative feedback circuit in vertical deflection circuit compensates for the linearity of the trace portion of the sawtooth wave. a decrease in the capacitance of the sawtooth generator capacitor is usually the trouble. but if you do not understand anything what i have written here, better bring it to a qualified tv technician for your own safety also. good luck!