When using a network set-top box, you will always face the trouble of no signal from the set-top box. Sometimes you can only worry. However, because you are not a professional, you are afraid to mess up, so there is no signal for everyone to solve the network set-top box. Basic knowledge.
1. Make sure that the set-top box power is turned on. Take out the set-top box remote control. The TV/AV button or HDMI button on the remote control. Press the corresponding AV button or HDMI cable according to the cable used by your TV. This time the set-top box. The lights above will flash, and this time the TV display is still no signal.
2. Set-top box no signal The first solution is to check the power supply, plug problems, see if it is loose, etc., if it is inserted from the new on it.
3. If there is a startup image of the set-top box on the TV screen and a subsequent “no signal†is indicated, this phenomenon proves that the audio/video cable (red, yellow, white) connection between your set-top box and the TV is basically OK, but TV RF input signal lines (note: do not refer to the red, white and yellow) do not receive the set-top box RF input port, or TV RF input signal line is not connected to the terminal box on the wall, or in your room where there are other open circuit.
4. Find the TV source button, switch the TV signal to HDMI or AV signal, switch to the corresponding signal, wait a few seconds, the TV will be the default image of the Internet TV set-top box. Through the above signal settings, your TV screen still shows no signal, this time not too worried, we now replace the connection line and then test it. Generally, there are AV cables and HDMI cables in the box. If you are using an HDMI HD cable, we will replace it with an AV cable. This can help me determine if there is a problem with the cable.
If there are no abnormal problems such as wiring, there may be damage to the cable television network, or the set-top box is damaged. Both of these methods are unresolved, and they can only be repaired by a professional.
If we still can not, we will need to replace the box after the sale. When we deal with the network TV set-top box no signal after sale, generally follow this line of thought to operate, first check the set-up problem, and then check the line to the end of the sale to replace the box. .
The above is no signal for the network set-top box, and it can solve the method and technique. For the set-top box is not very understanding, you can try it. If you really can't, you have to find after-sales solutions, or replace the set-top box.
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