TV Has Wrong Colours? Causes, Diagnosis and Repair in Nairobi

 Description: TV has wrong colours? Learn the common causes of red, green, blue, faded or distorted TV colours and how the problem can be diagnosed and repaired in Nairobi.

A TV that suddenly displays wrong colours can make everything on the screen look strange. Skin tones may appear red or green, white may look blue or yellow, or the entire picture may have a strange colour tint. In some cases, the TV colours may be faded, inverted, distorted or completely different from normal.

The problem can be caused by incorrect picture settings, a faulty HDMI connection, an external device, the TV’s mainboard, T-Con board, display panel or other internal components.

If your TV has wrong colours, it is important to determine whether the problem is caused by the signal source or by the television itself before replacing any parts.

What Does It Mean When a TV Has Wrong Colours?

When a TV has incorrect colours, the television is usually receiving, processing or displaying the picture incorrectly.

Common symptoms include:

• TV screen is red
• TV screen is green
• TV screen is blue
• TV picture has a yellow tint
• TV picture has a purple or pink tint
• TV colours look washed out
• TV has distorted colours
• TV displays negative or inverted colours
• Skin tones look unnatural
• White objects appear blue, green or yellow
• Some colours are missing from the picture
• TV picture looks normal on some sources but wrong on others

The correct diagnosis depends on exactly how the colour problem appears.

1. Incorrect TV Picture Settings

One of the simplest causes of wrong TV colours is an incorrect picture setting.

Modern smart TVs have several picture controls, including colour temperature, tint, hue, contrast, saturation and picture modes. Changing these settings accidentally can make the screen look excessively red, blue, green or yellow.

Try returning the picture settings to their factory defaults.

If the colours return to normal after resetting the picture settings, there may be no hardware fault.

2. Faulty HDMI Cable or Connection

A damaged or poorly connected HDMI cable can cause picture abnormalities.

If the TV has wrong colours only when using a decoder, PlayStation, Xbox, computer, streaming box or other HDMI device, check the HDMI connection first.

Try:

1. Disconnecting and reconnecting the HDMI cable.
2. Testing another HDMI port.
3. Testing another HDMI cable.
4. Connecting a different source to the TV.

If another source displays normal colours, the original source or cable may be responsible.

3. External Device or Decoder Problem

Sometimes the TV itself is perfectly fine. The problem may be coming from the device connected to it.

For example, a decoder, media player, computer or gaming console can produce abnormal colours because of incorrect video settings or a hardware fault.

Check whether the TV displays the wrong colours on its own menus.

If the TV menu also has incorrect colours, the problem is more likely to be inside the television.

If the menu looks normal but an HDMI source has wrong colours, investigate the external device, cable or input connection.

4. T-Con Board Fault

The T-Con board, or timing control board, plays an important role in processing image information before it reaches the TV panel.

A faulty T-Con board can cause:

• Incorrect colours
• Colour distortion
• Vertical or horizontal lines
• Solarized-looking images
• Missing colours
• Double images
• Partial picture problems
• Abnormal brightness

A T-Con fault should be properly tested before the board is replaced because similar symptoms can be caused by other components.

5. Mainboard Problem

The TV mainboard controls many important functions, including video processing.

A defective mainboard can cause TV colour problems, especially when the television processes the incoming video signal incorrectly.

A technician may need to check the video processing circuits, connectors and signals between the mainboard and display system.

Mainboard faults can sometimes be repaired at component level, while in other cases board replacement may be necessary.

6. Loose or Damaged Internal Connections

Inside a television are several cables and connectors carrying power and image signals.

A loose, oxidized or damaged connection can cause abnormal colours or partial picture problems.

This is especially possible when the TV has previously been opened, moved, repaired or exposed to physical impact.

Internal connections should be checked carefully by a qualified TV technician.

7. TV Panel or Display Fault

Unfortunately, not every colour problem is repairable by replacing an electronic board.

The LCD/LED display panel itself can develop faults that cause permanent colour distortion.

A damaged panel may show:

• Permanent colour tint
• Missing colours
• Coloured lines
• Dark sections
• Uneven picture
• Distorted images
• Colour changes in specific areas

If the panel is defective, repair can be difficult or uneconomical depending on the TV model and availability of a replacement panel.

How a Technician Diagnoses a TV With Wrong Colours

A proper diagnosis should begin with simple checks before replacing expensive components.

The technician can test:

1. TV picture settings.
2. Different TV channels or applications.
3. The television’s built-in menu.
4. HDMI inputs and cables.
5. External devices.
6. Mainboard operation.
7. T-Con board and image signals.
8. Internal connectors.
9. Display panel condition.

This approach helps identify the actual cause rather than replacing parts based only on the appearance of the screen.

Can Wrong TV Colours Be Repaired?

Yes. Many TV colour problems can be repaired, depending on the cause.

If the problem is caused by settings, an HDMI cable or an external device, the solution may be simple.

If the problem is caused by a T-Con board, mainboard or internal connection, professional repair or component replacement may be required.

A panel fault can be more serious and should be assessed carefully before deciding whether to repair or replace the television.

TV Wrong Colours Repair in Nairobi

If your TV has wrong colours in Nairobi, Refitec provides TV diagnosis and repair services for different TV brands and models.

Common problems handled include red TV screens, green screens, blue screens, distorted colours, faded colours, missing colours, colour tint problems and other picture faults.

Refitec repairs different TV brands and can diagnose problems involving the backlight, T-Con board, mainboard, power supply and display system.

For a more accurate assessment, provide the TV’s brand, screen size and model number. The model number is normally found on a label at the back of the TV or on the original TV box.

TV Repair Cost in Nairobi

The cost of repairing a TV with wrong colours depends on the failed component.

A simple settings or connection problem can cost much less than a faulty mainboard, T-Con board or display panel. The exact price should therefore be determined after diagnosis.

Refitec charges a Ksh 1,000 diagnosis fee, after which the technician can identify the fault and provide a repair estimate.