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NOKIA screen does not show.
Machine model: NOKIA
Malfunction: NOKIA screen is not displayed.
Maintenance process: When you get the phone and press the power-on button, the screen of the phone will not be displayed. In this case, check the display seat and its surrounding components first.
NOKIA screen does not show Figure 1.
Take out the motherboard of the mobile phone, measure the ground value of the display seat with a multimeter, and find that the negative power supply is disconnected. It was observed under a microscope, and it was found that the negative power supply fuse inductor was missing, so the inductor was shorted with tin.
NOKIA screen does not show Figure 2.
After a short test, the mobile phone can be turned on normally, and the fault is perfectly repaired.
NOKIA screen does not show Figure 3.
