Hi any advise how to check power socket,I try won’t work
I would use a multi-meter to check for voltage at the socket. A few fundamentals, if you know them, great, but I'll say them since not everyone does.
When you turn on the meter, set the meter to Ohms (resistance) and short the leads together. You should see 0 ohms or something close such as 0.0X ohms. If that test is good, it tells you that the leads are connected correctly and the meter is working correctly. If that test fails, your leads are not correctly connected or the meter has a problem.
Make sure the bike ignition is on.
Switch the meter to V (voltage) and check the socket for voltage. If the bike is not running I would expect around 12 volts. If it is running, I would expect about 14 volts. If you see -12V or -14V, that indicates that your leads are touching wrong conductors inside the socket and you are measuring reverse polarity. There is no such thing as negative voltage. If you swap the contact points inside the socket the voltage will swap to positive.
If your socket is good, then your device that you're plugging in either isn't making good contact or the device is bad.
If you don't get good voltage at the socket, it is either not connected to the power supply, the power supply is bad (highly unlikely), or you have an open in the circuit, most likely a blown fuse.