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Lenovo xiaoxinchao 7000-13 laptop can’t be turned on for repair
Machine model: Lenovo Xiaoxinchao 7000-13
Malfunction: Notebook Won’t Turn On
Maintenance process: connect adjustable standby 00000, obviously not isolated by Current protection. Call Inductor diode value, and find that the charging circuit Inductor is zero to ground. Prepare to check the charging chip, and find that Capacitor beside Inductor has exploded.
Lenovo xiaoxinchao 7000-13 laptop can’t be turned on for repair Figure 1.
Capacitor diode value is back to normal after being removed, and 0000 is still not on standby. Is this Capacitor Capacitor, the charging chip also hung up? Searching the information of this chip on the forum, I found that some of them were disassembled.diode; the one who lacks dialectical thinking Ok, there are several similar problems, so Capacitor in this position should be common failing, so I also removed this diode.
Lenovo xiaoxinchao 7000-13 laptop can’t be turned on for repair Figure 2.
Remove this diode and turn on large current. Finally, find it next to the interface of screen VCC, and find that an Capacitor was blown up.
Lenovo xiaoxinchao 7000-13 laptop can’t be turned on for repair Figure 3.
Power off and power on booting up, in one go, and maintenance is over.
