Question:

I have a Samsung QN75Q80TAFXZA TV that emits a high-pitched squeal from the back. The noise is constant and independent of the input source, volume level, or picture settings. However, the noise stops when I enter the TV settings menu and resumes when I exit it. I recently did an auto sync with an Apple TV and a soundbar, but I am not sure if that is related to the problem. What could be the cause of this noise and how can I fix it? I appreciate any advice or guidance.

Answer:

How to Fix a High-Pitched Squeal on a Samsung QN75Q80TAFXZA TV

If you own a Samsung QN75Q80TAFXZA TV, you may have encountered a high-pitched squeal coming from the back of the TV. This noise can be annoying and distracting, especially when you are trying to enjoy your favorite shows or movies. In this article, we will explain what could be the cause of this noise and how you can fix it.

The high-pitched squeal on your Samsung QN75Q80TAFXZA TV is most likely caused by a faulty or defective power supply board. The power supply board is responsible for converting the AC power from the outlet to the DC power that the TV needs. If the power supply board is damaged or malfunctioning, it can produce a high-frequency noise that is audible to the human ear. This noise can vary in intensity and pitch depending on the power load and the condition of the board.

The power supply board can be affected by various factors, such as power surges, voltage fluctuations, overheating, dust, moisture, or physical damage. Sometimes, the noise can be triggered by a specific setting or mode on the TV, such as the auto sync feature. The auto sync feature allows the TV to automatically adjust the picture and sound settings to match the connected devices, such as an Apple TV or a soundbar. However, this feature can also cause interference or compatibility issues with the power supply board, resulting in the high-pitched squeal.

How to Fix the High-Pitched Squeal?

There are a few possible solutions to fix the high-pitched squeal on your Samsung QN75Q80TAFXZA TV. Depending on the severity and the source of the problem, you may need to try different methods until you find the one that works for you. Here are some steps that you can follow:

• Step 1: Turn off the TV and unplug it from the power outlet. Wait for at least 10 minutes before plugging it back in. This will allow the TV to reset and clear any temporary errors or glitches that may be causing the noise.
• Step 2: Check the power cord and the power outlet for any signs of damage or wear. Make sure that the power cord is firmly and securely connected to the TV and the outlet. If possible, use a different power outlet or a surge protector to prevent any power fluctuations or surges that may affect the power supply board.
• Step 3: Disconnect any external devices that are connected to the TV, such as an Apple TV, a soundbar, a Blu-ray player, or a gaming console. Turn on the TV and see if the noise persists. If the noise stops, then one of the devices may be causing the interference or the compatibility issue with the power supply board. Try reconnecting the devices one by one and test the TV after each connection. If the noise returns, then you have identified the problematic device. You may need to adjust the settings or update the firmware of the device to resolve the issue.
• Step 4: Turn off the auto sync feature on the TV. To do this, go to the TV settings menu and select General. Then, select External Device Manager and turn off the Auto Sync Plus option. This will disable the automatic adjustment of the picture and sound settings to match the connected devices. You may need to manually adjust the settings to suit your preferences.
• Step 5: If none of the above steps work, then you may need to replace the power supply board on the TV. The power supply board is located at the back of the TV, usually on the right side. You will need to remove the back cover of the TV and disconnect the cables and screws that hold the board in place. You can order a new power supply board from the Samsung website or from an authorized dealer. Make sure that you order the correct model and part number for your TV. You can also contact Samsung customer service or a qualified technician for assistance.

Conclusion

The

high-pitched squeal on your Samsung QN75Q80TAFXZA TV can be a frustrating and annoying problem, but it can be fixed with some simple troubleshooting steps. The most common cause of the noise is a faulty or defective power supply board, which can be affected by various factors, such as power surges, voltage fluctuations, overheating, dust, moisture, or physical damage. Sometimes, the noise can also be triggered by a specific setting or mode on the TV, such as the auto sync feature, which can cause interference or compatibility issues with the power supply board. To fix the noise, you can try resetting the TV, checking the power cord and the outlet, disconnecting the external devices, turning off the auto sync feature, or replacing the power supply board. We hope that this article has helped you solve your problem and enjoy your TV without any noise.