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Changhong TV black screen sound is what fault
Source: http://xrqa.cn Author: Mianyang Changhong air conditioning after sales maintenance update date: 2021-01-03 11:04
Changhong TV black screen sound is what fault
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1. The reason why there is sound on the black screen of the TV may be caused by the abnormal power circuit of the TV set. The phenomenon of this problem is that there is no reaction of the panel button and the indicator light is not on. Encounter such a problem, should first check the TV 12V voltage and 5V voltage is normal. If the voltage is normal, it may be that there is a problem with the series of input power circuit. This is generally because the fuse of the power supply is burned or there is a problem with the voltage regulator chip. The fuse of the TV set is burned and the insurance of the TV set needs to be replaced;
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2. The load of 5V voltage of the power supply is too heavy, and the voltage is too low, or the signal processor of the later stage has problems, and some circuits are damaged. At this time, it is necessary to eliminate the faulty components one by one, check out the faulty components, replace the faulty components, and the voltage can return to normal. In the replacement of the time to the professional maintenance point to find professional maintenance personnel;