cable tv set-尊龙棋牌

1. common reasons and reasons for elimination of chen

1.1 there is no sound

there may be the following situations: one is to check whether the set-top box and the tv audio cable is connected, the audio cable is damaged or open circuit; the second is because the digital television signal can simultaneously transmit multi-layer audio signals in different formats , because of this feature, most of the provincial tv program is the use of mono transmission of tv audio; then switch the set-top box remote control channel built to be transferred to stereo; there are some cases the user set-top box in a silent state or volume too small to cancel the silent mode or increase the audio can; remove the above three cases is the set-top box itself is faulty, this time we need to set-top box after-sales maintenance.

1.2 there is no audio image

this kind of problem can be divided into the following situations: the first case is the video cable is not connected properly or fall off, to check the video cable connection is normal, please follow the correct color connection; the second case is the current set-top box is broadcasting , need to switch to tv status; the third case is the tv brightness to a minimum, adjust the tv brightness to the appropriate location; exclude the above three cases, is the set-top box failure, need to set-top box after-sales maintenance.

1.3 each boot, set-top box shows re-cable

set the top box box, press the menu button, while the set-top box power, into the mandatory upgrade screen, some set-top box on the left and right buttons, the frequency to 0474, the red line transferred to the bottom of the upgrade, click ok button to start a mandatory upgrade.

in the upgrade process, do not carry out any operation, but also can not power, upgrade takes about ten minutes.

when the upgrade is complete, the system automatically reverts to the search interface (system upgrade, there will be a short black screen, do not do anything).

click ok after the channel search, when the search is finished, click the remote control to exit the key twice, then you can normally watch a digital tv program.

1.4 image mosaic, sound card

mosaic screen appears on the screen is irregular tv block, then the tv sound may also appear intermittent or accompanied by a sharp harsh sound of a failure. such a failure has the following possibilities:

first, we must first exclude the program source problem, because the outside world may be complex electromagnetic environment may affect our reception and transmission of digital television signals, but this effect is only temporary, just a moment.

2. set-top box should be noted that the use of more problems

set-top box is the current urban television users to watch digital television programs, important equipment, in order to ensure that the set-top box is in normal working condition, should note the following points:

second, if the user does not use the set-top box for a long time, you need to unplug the ac power plug to prevent the burned-out devices in the set-top box; the other is to set up the tv set, third, the set-top box should be placed in a smooth, ventilated and away from heat in the environment, do not set-top box placed on the bed, sofa, etc., so as not to affect the normal cooling; fourth, avoid the set-top box vents with paper, curtains and other coverage, so as not to affect its cooling function, to avoid the phenomenon of death and overheating burned; fifth, do not place the set-top box may be eroded by water, such as rain or water, etc., can not be set- 7, in the thunderstorm period, try not to watch tv, and the set-top box (set-top box), set-top box, set-top box, set-top box, and so on; unplug the power cord to avoid the phenomenon of lightning.