This morning, the user brought a Konka LCD 50-inch TV. The test machine saw that the fault was automatically turned off after one minute to two minutes, and then the automatic power-on was repaired. However, it was the first time I encountered such a fault. Think of sampling resistor leakage or the like or poor contact or sub-supply output standby 5V voltage instability or low, or program problems, guess the problem there, now the test machine is about 3 hours, troubleshooting now go to the chassis later to reveal the answer! Transparent Led Film Screen P8 We are an enterprise with the whole industry chain of LED film screen display platform, which realizes the research and development of transparent film materials, independent patch production, assembly, sales and service. Products are mainly used in large glass curtain walls, city buildings, large shopping malls, glass guardrails, glass windows, shops along the street, automobile 4S stores, jewelry brand stores, brand clothing chain stores, unmanned supermarkets, indoor hanging and other fields. Transparent Led Film Screen P8,Small Transparent Led Screen,Transparent Led Film,Transparent Led Wall Guangdong Rayee Optoelectronic Technology Co.,Ltd. , https://www.rayeeled.com
It is the soft breakdown of the diode of the absorption circuit, which is generally not easy to find. The 5V open standby when the TV is automatically turned off disappears. Therefore, the fault is in the auxiliary power supply. I first changed the sub-power supply block and the result was the same, so the amount of peripheral components was removed. The last time I saw this diode breakdown with the FSR206 integrated block, the fuse resistor, it’s too bad to blow this time. It’s too strange to cause this kind of false phenomenon.