Why are set-top boxes noisy?
It's not a set-top box problem,Cable TV is the line, there are problems, you can repair.Cut the wire mesh in the cable connection and leave only a single copper wire in the center, so there is no noise.
If it is part of a plosive image mosaic at the same time, to call home, may be a sign of poor purity, disturbance signal. If all is not good, there may be a problem with the box.
Set-top box noise, can be understood as two types of noise: first, set-top boxes of their own noise; two, the TV set up set-top boxes after the noise.1, set-top boxes, especially in recent five years of set-top box products, should not make noise. Because of the most noise prone cooling fan has not been set top box, the set-top box of the main chip even if the need for special cooling, installation is also aluminum stationary radiator. Moreover, the set-top box does not contain speakers, and there will be no howling. Therefore, if the set-top box itself has a larger sound, especially the lower frequency noise, it is likely because its shell resonance with other objects. As long as the set-top box and the shell that will move without hanging pad angle.2, the TV set up a set-top box after the noise, may be near the strong electromagnetic interference source, from the TV set and set-top box between the audio line (red and white plugs) into the TV set. The solution is to shorten the length of the wire as much as possible. If conditions permit, try to use HDMI cable to connect set-top boxes and TV sets, because the audio signals of the line are transmitted after modulation, and the anti-interference ability is stronger.
Should it be current sound? It's the sting, the sting. Some lines should be too close to each other.
