Why can't cmmb mobile TV search for a signal? What happened?

1. Please check whether the power plug of the set-top box is plugged in (to ensure that the socket has power) or whether the switch of the set-top box is turned on. If the above problems do not exist. It is that the power supply of the set-top box is broken. Go to the designated maintenance office (you can call the radio and television customer service hotline to ask) and take it for maintenance.

2. If the power light in front of the set-top box is on, the led screen has digital display. Generally, you can troubleshoot the set-top box (special failures of the set-top box are not excluded). You can first check whether your TV has been switched to the correct input terminal.

3.CMMB is a mobile TV. When the signal is bad, you can't find the signal. You can try to reconnect in a place with good TV signal, such as walking out of the room to an empty place or reconnecting on the balcony.

Extended data

Application mode

On a TD mobile phone with a preset mobile TV client, the service can be opened and cancelled through the client.

After opening the application software of the mobile TV terminal, the terminal will automatically show you the obtained business guide, including channel name, program name, content introduction, start time, end time, payment standard, payment method, channel access method, etc. You choose the content you are interested in and carry out the follow-up operations, including ordering food and watching.

1) service opening: you must open the mobile TV service before you can carry out other operations related to the use of mobile TV, and start charging monthly function fees;

2) Service cancellation: After you cancel the mobile TV service, you can't do any operation related to the use of mobile TV except "service opening", and there is no charge;

3) Service subscription: under the premise of "service opening", you can subscribe to the viewing package of mobile TV service. After ordering and paying the subscription fee, you can watch the channels and programs included in the package;

4) Service unsubscribe: Under the premise of "service opening", you can unsubscribe from the viewing package of mobile TV service. After canceling your order or all subscriptions, you will not be able to watch the channels and programs included in the unsubscribed subscriptions;

5) Business suspension: under the premise of "business opening", you temporarily stop the signing relationship of your mobile TV business. After the suspension takes effect, you can't use the mobile TV service or subscribe to the viewing package, but you can unsubscribe from the viewing package;

6) Business resumption: under the premise of "business opening", you resume the signing relationship of your suspended mobile TV business. After recovery, you can use mobile TV service, subscribe and unsubscribe. At present, mobile TV only provides central business content and national regional business content.