The motherboard is one of the key hardware of the industrial control host. The configuration of the industrial control computer system is connected to the socket of the motherboard to transmit data. The quality of the motherboard determines the stability of the entire system of the industrial control computer. In the process of using the industrial control motherboard, people may encounter such a situation, that is, the power supply of the industrial control motherboard is short-circuited. At this time, people generally have to analyze the cause of the short circuit of the power supply of the industrial control motherboard, so how to analyze it?
At the top of the list, when there is a short circuit in red 5V or yellow 12V, the power supply is maintained and cannot be forcibly turned on.
Second, orange 3.3v can be turned on when short circuit, the temperature of the damaged components is significantly abnormal after booting, some industrial control motherboards PCI slots do not have 3.3v power supply, it is normal for the test card to not light up, sometimes after powering on, the test card indicator light keeps flashing.
Fourth, when the power supply is maintained on the industrial control motherboard, it is mostly related to the damage of the Q1 field tube of the main power supply part, and the short circuit of red 5v and orange 3.3v is mostly caused by damage to the south bridge.
Fifth, when the violet 5V is short-circuited, some components will show significant temperature abnormalities in the standby state, and the components that use the standby voltage have the function of powering up, such as: I/O, South Bridge, standby voltage generating components, PS/2, USB interface, memory power supply components, etc. Computer store network tips: sometimes there will be a standby state, the test card all the indicator lights lightly lit phenomenon, can be forced to start, after power-on, the short-circuit components are abnormally more significant.
When the customer encounters the situation of short circuit of the power supply of the industrial control motherboard again, the corresponding solution can be found according to the reasons introduced above.
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