Digital TV signal lock failed Digital TV set top box is locked, how to unlock it

The reason for the failure of the digital TV signal locking is the weak TV signal.

Whether the ** cable of the TV is not connected well or plugged in the wrong position, it is recommended to reconnect it correctly according to the wiring instructions; Whether it is the ** input source of the TV is not correct, switch the signal source in the remote control, such as connecting to cable TV, switch to cable TV (or radio frequency signal) input, if it is connected to a set-top box or digital TV, you can use an HDMI cable to connect and adjust the TV input signal to HDMI.

If the power indicator of the TV is off, it may be that there is a problem with the power connection of the TV, resulting in a sudden power failure without an image, such as the power plug is loose, the power source line is faulty, etc., you can check the problem one by one and deal with it accordingly.

If the power indicator of the TV is on, it may be that the standby button of the remote control has been pressed by mistake, so that the TV enters the standby state, and there is no image displayed, you only need to press the standby button of the remote control again, and the TV can be woken up and the normal screen display can be restored. Check that the network cable is not connected, connect the network cable to the WAN port of the video terminal, check whether the service network is faulty, and contact the corresponding Yunzhi operator for verification.

I guess the TV signal strength can't reach the minimum strength of the signal received by the set-top box, you can look up the menu, look at the page of a certain channel version information. Look at the signal strength and quality display,Compared with another set-top box for TV,Is it a little worse。

If the signal strength is weak, (this TV effect is worse than the other when the analog signal is analog), try to distribute the incoming signal with a power divider or room amplifier, rather than simply using a tee or something like that. Increase signal strength.

I have not tried these methods of power, just guessed according to theory, for reference only, please let the professionals handle it with caution. Or there may be other reasons, throw bricks and bricks here, please point out.

Generally, different models of digital TV set-top boxes have different unlocking passwords; You can try to unlock it as follows:

1. Check the instruction manual of the set-top box first, there is generally an unlocking method, and you can unlock it according to the method in the manual;

2. If there is no manual, try to enter 0000 or 1234 in the unlock password input box to unlock, which is the default unlock password of most set-top boxes;

3. If it still can't be unlocked, you can try to restore the set-top box to factory settings to unlock it: press the menu button to find the system settings, find the system restore after entering, and press the confirm button to restore the system of the set-top box to the factory settings state to restore it to normal;

4. If none of the above methods can be unlocked after trying, it is recommended to contact the customer service of the set-top box in time and unlock it according to the unlocking method told by the customer service; Or the customer service arranges a professional to come to the door to operate and unlock.

To unlock a TV set-top box, you need to refer to your device model and provider's policies. Here are some suggestions, but make sure to contact your device manufacturer or service provider first for an accurate unlocking guide: Loss.

1.Restart your set-top box: Sometimes, simply powering off the device for a few minutes and then reconnecting it can solve the problem.

2.Reset or unlock with the remote: Some devices allow the user to unlock by pressing a specific combination of keys through the remote. You'll need to find your device's manual or contact your manufacturer or service provider for details.

3.Reset factory settings: Find "Settings" or "Menu" on your device and select "Factory reset".

This will erase all passcodes and lock settings, restoring the device to its factory state. It should be noted that doing so will erase all settings and data stored on the set-top box.

4.Contact your service provider: If none of the above methods can unlock your set-top box, contact your TV service provider for support. They may need to verify that you are the account holder and may ask for a relevant customer number or device number.

5.Contact the device manufacturer: If you can't resolve the issue by contacting your service provider, contact the set-top box manufacturer. They may provide additional guidance or may require you to send your device back to unlock it.

Keep in mind that if your device is locked for policy or contractual reasons, follow the policy and make sure the conditions are met before unlocking to avoid additional fees or contract violations.

1. After entering the password, you can unlock it, and the password can view the initial password of the manual (if it has not been changed).

2. Press the "Menu" on the remote control of the set-top box, enter the system settings, find the "Set Password" and have the option "Program Lock", and modify the program lock to not enabled.

3、Press the remote control of the set-top box"Menu",Enter the system settings,Find"Factory reset",OK to restore factory settings,Then prompt to search for programs again,Click OK,After searching for programs, you can normal**TV。

If the TV is not used properly, it will affect the life of the TV.

Pay attention to the influence of geomagnetism. The phosphor screen of the large-screen color TV should be placed facing south or north, so that the direction of the earth's magnetic field is consistent with the direction of the electron beam in the picture tube, so as to prevent the geomagnetism from affecting the color purity.

Pay attention to ventilation and heat dissipation. When using a large-screen color TV, do not cover it with plastic sheeting, cloth covers, etc., and do not pad foam plastic at the bottom, so as not to affect the ventilation and heat dissipation of the color TV.

Pay attention to color and volume. The color, volume, and contrast of large-screen color TVs should be appropriate, so that not only the best effect is good, but also power saving, and it can also extend the life of the TV.

The remote control can be unlocked by pressing the menu.

Unlock! No password for factory reset.

With the increase of the screen in the display device, the transmission line will not only grow accordingly, but also bend in many places, which makes the consistency of the transmission line itself worse, resulting in a large attenuation of the signal in the transmission process, that is, the eye diagram corresponding to the signal.

Variation, including eye width narrowing and eye height becoming low, and then make the display screen driver chip 200 unable to identify this signal because of the received signal probabilistic error, causes signal transmission to lose lock, and the phenomenon that the display equipment works abnormally.

The user increases the amplitude of the output signal of the front-end motherboard chip 100 in advance, so that the eye height corresponding to the signal is higher, and increases the strength of the high-frequency component of the output signal of the front-end motherboard chip 100 in advance, and makes it maintain a large margin, so that the eye width corresponding to the signal is wider.

Generally, there are two lights on the front panel of the cable TV set-top box, one is the power light, and the other is the signal lock light, the power light is on after the power is turned on, the lock light flashes, and the lock light is on after the light signal is locked. If the lock is lost, contact their customer service and install the master to deal with it.

What to do if the TV is lockedHello dear,The universal remote control of the TV is locked,Just reset the remote control。 The setting method is:Press and hold the remote control "Settings" button,Wait until the indicator light is always on and let go,Use the remote control to point at the TV,Press the "Volume +" button,Press and release,Don't stop,Stop when the volume symbol appears on the TV screen,Press Jane again "Set the check" button,The indicator light is off,Compare the various function keys of the remote control,Normal is OK,If it is not normal,Repeat the setting,Until normal,I hope it can help you。

There are two lights on the front panel of the cable TV set-top box, one is the power light, and the other is the signal lock light, and the power light is on when the power is turned on, and the lock light flashes. After the light signal is locked, the locking light will stay on, and if it is unlocked, the locking light will not be on.

General Causes and Solutions for Cable TV Suddenly Showing No Signal:

1. If the connection line between the cable TV set-top box and the TV is loose and the contact is poor, resulting in the loss of signal, you can check the connection line, reconnect it correctly, fix it, and be cautious.

2. The user misoperates, switches the signal source of the TV to other modes, resulting in no signal display, you can press the signal source key of the TV to switch the signal source mode one by one, until the picture of the cable TV is restored.

3. The signal is lost due to the failure of the external cable TV signal transmission line or the server failure of the service provider, and it is necessary to wait for the service provider to repair before it can be restored to normal.

4. The hardware failure of the set-top box or TV causes a sudden loss of signal, which needs to be repaired by contacting the corresponding after-sales service to solve it.