Question

Samsung TV screen goes black but sound still works

Answer 1

The problem of Samsung TV screen turning black but sound still normal may be caused by many reasons. Here are some possible reasons and corresponding solutions:

Possible reasons

1. Power problem:
- The TV may not be powered on or the power button is not turned on.
- The power board or power line may be faulty.

2. Signal problem:
- The signal source of the TV may not be connected correctly or the signal is abnormal.

3. Backlight failure:
- The backlight board high-voltage inverter and control triode may be empty soldered.
- The backlight may be damaged, causing the protection circuit to shut down the power to the backlight circuit.

4. Display failure:
- The display itself may have a fault, such as aging or damage to the display.

5. Circuit problem:
- The power circuit may be abnormal, such as abnormal 12V and 5V voltages.
- The 5V voltage load is too heavy or there may be a problem with the signal processor at the later stage.
- There may be a problem with the driving backlight circuit, such as a failure in the high-voltage control board switch function circuit.

Solution

1. Check the power supply:
- Make sure the TV is connected to the power supply and check whether the power button is turned on.
- If the power supply is normal but the problem persists, you may need to check whether the power board or power line is faulty, and contact a professional maintenance personnel if necessary.

2. Check the signal:
- Make sure the signal source of the TV is correctly connected and check whether the signal is normal.
- You can try to switch to different signal sources (such as cable TV, HDMI, etc.) to eliminate the signal source problem.

3. Check the backlight:
- If you suspect that the backlight is faulty, you can try to put the TV in a well-lit environment or shine a flashlight on the screen to check whether there is an image displayed.
- If the backlight board high-voltage inverter and control triode are empty, you need to find a professional maintenance personnel to re-solder them.
- If the backlight is damaged, you need to replace the backlight and troubleshoot.

4. Check the display:
- Try to check whether the menu interface can be displayed by pressing the menu button on the remote control. If the menu interface can be displayed, it means that the display may have a problem and needs to be repaired or replaced.

5. Check the circuit:
- If you suspect that the black screen is caused by a circuit problem, it is recommended to contact a professional repairman for inspection and repair. They can use professional tools to detect the voltage and circuit conditions of the TV and find the fault point for repair.

Notes

- Before performing any repair operations, make sure that the power supply of the TV is disconnected and wait for a while for the capacitor inside the TV to discharge.
- If you are not sure how to perform the repair operation, please do not try to disassemble the TV or replace parts by yourself to avoid further damage or safety hazards.
- It is recommended to contact the official after-sales service center of Samsung TV or a professional repair organization for inspection and repair to ensure the quality and safety of the repair.

Answer 2

Samsung TV screen blackening may be caused by a variety of reasons, which are briefly summarized as follows:

1. Power and connection problems: Check whether the power plug is plugged in tightly, whether the power cord is damaged, and whether the audio and video connections (such as HDMI cables) are connected correctly.

2. Signal source problem: Try to change the input source or check whether the signal source is stable. It may be caused by incompatible signal source or signal source failure.

3. Setting problem: Check whether the image settings, such as brightness, contrast, etc., are adjusted incorrectly.

4. Software problem: The recent software update may cause the screen to blacken. Try restarting the TV or restoring factory settings.

5. Hardware failure: Hardware failure such as motherboard, backlight panel, etc. may also cause the screen to blacken. At this time, you need to contact professional repair service.

When solving the problem, it is recommended to check one by one in the above order to quickly locate the problem.