Lcd tv only shows white. It does have audio

Based on the symptoms you described for your Hisense model 50h5c TV, it seems that there may be a hardware issue affecting the display. Without being able to diagnose the TV in person, it is challenging to pinpoint the exact parts that may need replacement. However, there are a few components that commonly contribute to display issues:
T-Con Board: The T-Con (Timing Control) board controls the timing and signals sent to the display panel. If there are issues with half of the screen or black screen with half lines, a malfunctioning T-Con board could be a potential culprit.
Display Panel: The display panel itself could be defective, causing the black screen or half-line issue. Unfortunately, replacing the display panel can be costly and often not cost-effective compared to purchasing a new TV.
Main Board: The main board handles various functions of the TV, including signal processing and overall control. In some cases, issues with the main board can cause display problems.

If the top half of the display on your Starvision LCD TV model SV32A is blurry, here are some steps you can take to try and repair the display:

1. Check the connection: Ensure that the cable connecting the TV to the input source is properly connected and not loose. You can try unplugging the cable and plugging it back in to see if this resolves the issue.
2. Adjust the picture settings: Check the TV's picture settings and adjust the sharpness and contrast settings to see if this improves the display quality.
3. Check for interference: Move any devices that may be causing interference, such as speakers or mobile phones, away from the TV to see if this improves the display quality.
4. Reset the TV: Try resetting the TV to its factory settings. This can be done through the TV's menu settings.
5. Replace the T-con board: If none of the above steps work, the issue could be with the T-con board, which controls the display. You may need to replace the T-con board to resolve the issue.
6. Professional repair: If the issue persists even after replacing the T-con board, it may be a more serious problem that requires professional repair.

It is important to take caution when attempting to repair an LCD TV display, as these devices are delicate and can be easily damaged. If you are not confident in your ability to perform repairs, it is best to seek the assistance of a professional.

Yes, it's possible that the T-Con board in your Sony LCD TV may need to be repaired or replaced if it's causing vertical and horizontal white lines on the screen. The T-Con board is responsible for translating the digital signal from the TV's main board into a format that the LCD panel can display.
Before replacing the T-Con board, you may want to try some additional troubleshooting steps, such as checking all the cables and connections, performing a factory reset of the TV, and updating the firmware. However, if none of these steps resolve the issue, then the T-Con board may need to be replaced.
You can purchase a replacement T-Con board online or from a TV repair shop. If you're comfortable with electronics repair, you may be able to replace the board yourself by following instructions provided with the new T-Con board. Alternatively, you can hire a professional TV repair technician to replace the board for you.

On a modern LCD TV screen, white (or any color) vertical lines appear when the individual "tab bonded" wire connections of the ribbon cable servicing a column of pixels on the LCD display begin to fail.
From: https://www.nxp.com/wcm_document...
If the column wire is damaged and "stuck high," one of the 3 LCD display colors will show as a solid line.
From: http://www.avsforum.com/forum/16...
If the line is white, all three colors are "stuck on."
This could be a manufacturing defect of the panel, or a result of the TV operating in harsh temperature conditions.
Alternatively, the timing controller board (t-con) may be failing and not sending signal to the display in the first place. It could also be a loose connection of the ribbon cable between the t-con and display.
Test sequence:

• Reseat ribbon cables from display to t-con.
• Try replacing t-con. (Sometimes, solder re-folwing the t-con fixes the issue)
• Try replacing display. (Or, try applying pressure to the tab bonds)

Repairing the tab bond of an LCD display is a daunting, specialized task. Some folks have managed to fix them with heat guns or shims between the case and LCD (e.g., [Front Page] - Article: Howto: Repair LCD Tab Bond and TCON Issues), but those are hacks, at best.

t-con is my first choice, but failing that, the screen is dead, and the tv needs replacing.

Hi
check the video LCD TV Repair Tutorial Con Board Common Symptoms Solutions How to Replace...

www.electro-medical.blogspot.com

Ok t-con board is connected to main board which is giving signal and logic supply.. If the main board failed or giving a over voltage to the t-con it possibly your T-con gone out (new) again.

To isolate the problem try to replace the main board.

Hello
It is due to some loose fixation with its flat cables that connected to lcd disply screen to its T'con board. T'con [Timing Control] board is the driving board to LCD display. If there is some loose contact, the fault you describes here can occur. Just open the TV, and detach and reattach each flat cables that connects with T'Con board ot LCD screen. This must solve the probel of your TV. OK.

This problems are a very tipical of the coded pixels on the LCD screen panel passes through the board that call the T-CON decoder board to causing this problems.Vertical colors lines display on the LCD screen panel happen by itself.Yes.The T-CON decodering board it is dying and shorting out.This T-CON decodering board sit in the middle at the botton of the LCD screen panel.Replacing this T-CON decodering board will solved this problems,if does not the LCD screen panel itself it is shorting out,than the tv it is not worth fixing,because changing the whole LCD screen panel itself it is not practical and the cost will be the same as a new tv itself.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish T-CON decodering board for the replacement.