Huawei Honor V30 Pro screen is not bright for repair

Machine model: Huawei Honor V30 Pro
Customer description: The mobile phone does not display occasionally.
Test results: The display is displayed when the phone is turned on, the backlight does not work, and pressing the motherboard will occasionally work normally.
Fault analysis: The cause of the fault should be Inveracious Soldering in a certain component, focusing on screen BTB connector and related circuit components.
Open Xinzhizao Soft software, find Honor v30 Pro annotation drawing and screen BTB connector.

Huawei Honor V30 Pro screen is not bright for repair Figure 1.

Open Honor v30 Pro Boardview, find screen BTB connector, and measure according to diode value data of Boardview as reference.

Huawei Honor V30 Pro screen is not bright for repair Figure 2.

Measure the data abnormality of MIPI bus of BTB connector, measure the other end of Inductor connected with it, and find Diode value is normal. The fault should be just above Inductor. Re-Inductor and repair the fault of Inductor connected with MIPI bus.