TV no display only sound: Some users experiencing the problem of having audio without video on certain satellite TV channels encounter this issue due to problems with the satellite dish, receiver, and television. Our article is prepared to provide solutions for the problem of having audio but no video on satellite TV channels.
First, let’s take a look at the following:
- Unplug and plug in the power cord of your television and, if available, the satellite receiver device.
- Check the satellite signal level and quality.
- Inspect the cable between the satellite dish antenna and the television. If there are extensions, especially use a single cable for multiple connections.
- Perform a check on the satellite dish antenna. If available, use a signal measurement device to check. If not, make slight adjustments to the dish antenna. This process should be done with two people.
- Check the LNB (Low Noise Block downconverter) connections. (Make sure the cable input is facing downwards and adjust as needed).
- Borrow an external satellite receiver for testing purposes.
- After the tests, reset to factory settings and perform the setup again.
Audio with No Video Issue on Satellite TV – Adjustments
There are several settings on your television that affect its performance. These settings can be crucial for aspects such as image quality, connections, and the overall user experience. Starting with basic controls always works, so by following the steps below, you can find solutions to your problems.
Important Note: Having a properly visible TV screen when accessing menus or settings is a positive sign. At this stage, the likelihood of a serious hardware issue with the TV is low.
Step 1: Basic Resetting Steps:
- Unplug the power cable of the TV and wait for about 60 seconds. Do not turn on the TV during this time.
- After 60 seconds, plug in the power cable, but do not turn on the TV just yet.
- Hold down the power button on the TV for about 30 seconds.
- During this time, you can count slowly or wait for a minute to pass.
- After releasing the power button, turn on the TV and check if there’s an image on the screen. If an image appears, your problem is resolved.
Audio with No Video Issue (HDMI Connection Check)
Checking HDMI connections is important to solve problems on your TV. There are two main points of failure concerning video and audio transmission: input sockets and cables.
Step 1: Checking HDMI Cables
- Disconnect both ends of the HDMI cable (the end connected to the TV and the other end connected to the device) and reconnect them. Repeat this process for every connected device on the TV.
- Use a known working HDMI cable and replace the cable you suspect is faulty. Test this change by trying different sources one by one. If this change resolves the issue, consider getting a new cable to use.
Step 2: Checking HDMI Input Settings
- Check in the TV’s settings menu which HDMI source is selected and which HDMI input you are connected to. While an inconsistency between input and settings is unlikely since you’re receiving audio, it’s still worth checking.
- If the issue persists, try a different HDMI input. For instance, if a device is connected to HDMI1 and not working, try connecting the device to HDMI2 and see if it works. Your TV might automatically search for the active source.
Step 3: Testing with Another Device
If the problematic HDMI input still doesn’t work, test whether another device works on this input. If a different device works flawlessly, it indicates that the previous device might be causing the issue.
If no devices work smoothly, it might mean that the HDMI input is physically damaged or a significant software problem is occurring. In this case, consider steps like Factory Reset.
Note: In some cases, uncertified HDMI cables can cause issues. Therefore, it’s recommended to use certified HDMI cables. Additionally, some newer TV models might have an HDMI test mode. You can use this mode to check for potential cable issues.
Audio with No Video Issue (Satellite Dish Antenna Check)
Even a slight movement in your satellite dish antenna can affect image and sound quality. Therefore, it’s crucial that the antenna’s position is stable and securely mounted in a location that won’t be affected by winter or windy conditions.
Software Issues and Factory Reset
To resolve potential software issues on your TV, you can try the following steps. These steps offer different approaches to ensure the proper functioning of your TV.
Step 1: Checking for Software Updates
If automatic updates are not enabled on your TV or if updates are not working properly, consider performing a manual update.
For more reliable updates, you can use a USB port or flash drive as an alternative to Wi-Fi-based updates, which can sometimes be unstable.
Step 2: Performing a Factory Reset
If update issues persist or your TV is still not working properly, as a last resort, you might consider performing a factory reset.
Before doing so, make sure to note down all your custom settings and configurations on the TV as a factory reset will erase all personal settings and data.
Follow the instructions on how to perform a factory reset on your TV. These instructions can usually be found in the user manual or on the official website of the TV manufacturer.
After a factory reset, your TV will be in a reset state, similar to the initial setup. If this reset resolves your issue, you may need to spend some time reconfiguring your previous settings.
Audio with No Video Issue (Hardware Problem)
If you suspect hardware problems on your TV, you can diagnose these issues using the following steps. Please read these instructions carefully and remember to prioritize safety measures.
Step 1: Backlight Test
Turn on your TV and ensure it’s connected to a working source with both audio and video.
Hold a flashlight directly against the TV screen. Carefully check if there’s any image appearing on the screen when the flashlight shines on it.
If you see an image in the areas where you shine the light, it might indicate problems with the backlight. Considering that other components are working to produce an image, the backlight might be damaged. In this case, you might need to replace the backlight.
Step 2: Checking the Power Source
If you can’t see any image at all, first check the power source of the TV. Make sure the plug and the TV’s power input are correctly connected.
If there’s a problem with the power source, it can prevent the TV from working. Check both the power outlet and the TV’s power input for any issues.
Keep in mind that diagnosing hardware problems can sometimes require expertise. If you’re facing difficulties implementing these steps or feel unsure, seeking the help of a professional technician might be a good option. Also, check if your TV is under warranty and whether you can get assistance from the manufacturer’s support hotline.
Cable Checks and Connections
Connection issues might be occurring on your TV. You can try the following steps to check cable connections and attempt to solve the problem:
Step 1: Checking Cable Connections
- Make sure the TV’s power cable is unplugged.
- Disconnect each cable one by one and reconnect them.
- Pay special attention to ribbon cables that extend between the small card called T-Con and the Main Board.
- If there’s dirt or dust buildup at contact points on the ribbon cables, gently clean it before reattaching.
Be careful while disconnecting and reconnecting cables. Cable inputs typically have a single correct orientation, but marking each cable connection before disconnecting and reconnecting can be helpful.
Check the connections at both ends of the LNB (Low Noise Block downconverter) cable.
Step 2: Checking the TV’s Status
After checking the connections, plug in the TV’s power cable. Turn on the TV and see if there’s an image on the screen.
If an image appears, the problem is resolved. If the issue persists, move on to the next step.
If you’re unable to resolve connection problems through these steps or face difficulties while applying them, consider seeking assistance from a professional technician. It’s important to be cautious when handling hardware components and making connections. If you’re unable to apply these steps or have concerns, professional help is the safest option.
Audio with No Video Issue (LNB)
Malfunctioning LCD Panel and Repair Situation
If the Bad Backlight test doesn’t yield results and your TV screen continues to exhibit problems, it’s possible that your LCD panel is malfunctioning. There can be various symptoms of a faulty LCD panel, and the following are some commonly observed signs:
- Single horizontal or vertical lines: You might see horizontal or vertical lines outside the normal image on your screen.
- Dead or stuck pixels or areas: Certain areas of your screen might show faulty images or color distortions.
- Issues at a specific point: Only a specific point on the screen might exhibit issues or color changes.
In many cases, LCD panel malfunctions can arise due to physical damage or mishandling. Additionally, due to the structure and design of LCD panels, there could be problems that cannot be repaired.
If your LCD panel is malfunctioning, at this point, the cost of repair is usually high. Replacing an LCD panel is a complex procedure and can be expensive. Replacing the panel might not be cost-effective. In this case, as an alternative, you might consider selling the TV’s other internal components.
Remember that replacing an LCD panel is generally a task that should be performed by professional technicians and can vary depending on your TV model. If your TV is still under warranty or you have access to technical support, refrain from making changes without seeking expert opinion.