As an old brand in the television industry, ti is the brand of consumers when they choose to buy television. However, television is used in ways that are more or less problematic, and one of them is the failure of television to operate. So, what if haisan can't turn it on? What's the reason why you can't turn on a sealine tv? Is there any solution? Let me give you some details
One, three without lights
The first check is whether the power key on the television is on, and the failure to turn it on will solve the problem, and the second check is whether the tv screen display was turned off by pressing the tv remote. Looking again at the absence of lights and the absence of lights, it is clear that the lack of jobs in the electrical component of the sea-based television is the result of the failure to activate the lights, which involve more electrical circuits and require some knowledge and awareness of the circuits, which need to be addressed by professionals。
Inspection of cpus
The cpu may not be able to operate because the cpu issued a stand-by order as a result of a failure as an electrical product. The cpu must have a working voltage of 5v or 3. 3v, which is provided by a power supply, and the light should first ensure that cpu working voltage is available, while most protected circuits are protected using cpu on-site circuits。
Iii. Inspection terminals
As an old tv brand, hae-shin has always had good quality. But as an electrical product, there's always trouble. The luminous lobes are clear about the availability and protection of circuit terminals, while at the same time ensuring that these circuits function in a normal state of operation. The luminum is the top priority of external protection circuits connected to the internal power source of the circuit, and the luminous lobes are part of the luminous diode。
Iv. Inspection of circuits
Based on the principle that, in most cases, the greater the positive and negative level of power differentials in the light-emitting inner diodes, the lower the output voltage after steady power pressure, we can find ways to lower or even land the luminous diodes, with a short time to distinguish between the internal and external protection of the electrical circuits in the light of reduced electrical wind voltage。
