What happens when the TV suddenly fails to receive a wired signal?
It is normal for the home to install the cable and to pay for the normal use. It is normal for the wired installation unit to test the wired signal, but what is the signal that the TV can not receive the wired signal suddenly? The TV can only see the CD disk.
If the set-top box is a digital signal in the form of connection without error, there are two possibilities: one is the digital set-top box is broken, it is only looking for manufacturers; two is the signal carrier to noise ratio, bit error rate value is wrong, but the signal strength is no problem, so the simulation of field test signal but not to BER, SNR, need to be measured by digital measuring instrument. The second possibility should not cause all channels to have no signal, should be part of the channel mosaic or no signal.Also, check that the wired signal line is connected to the set-top box. The video line is not connected to the video port. Your video and audio interface should be good because you can see CD. If it is analog signal, you can see CD does not mean that TV is not bad. Because CD and digital signals are video inputs, analog signals are radio frequency inputs.This problem, cable TV maintenance personnel should be able to judge out ah!
TV fault chant, TV receiving signal first by tuning the frequency selection and demodulation circuit, the signal of the AV baseband signal into the RF solution, if video is no problem, after the AV show that the circuit is good, the biggest problem in high possibility, then problems and demodulation part is, to find a home appliance the maintenance department to repair is not on the line.
First, I don't know, you said the test cable unit, the terminal is testing there?Is it your home terminal line? Or your local cable terminal?In addition, there is a distributor and amplifier for the CATV backbone to distribute signals to each cell.I guess if it wasn't for your home route, it would be the main line to your home line, where there was a broken line.The matter needs to be checked by the cable TV staff.
There may be some reason why the receiver does not receive the wired signal suddenly:Confirm cable TV is not paid.Confirm whether the cable is in the maintenance line. You can call the customer service number to confirm.If there are no problems in the first two, it may be a fault in your own line.It may be a set-top box fault, you need to dial customer service phone, fault reporting.
