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Category Laptop Repair Guide

Laptop Repair Guide

no booting s mechanical maintenance revolution notebook

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Mechanical revolution x6ti-s notebook no booting, the South Bridge is broken, and there is a sr2c8 in hand, which was disassembled before, so weld it REBALLING,Connect the power supply press the start button, the current jumps from 0.03 to 0.7, pause for 5 seconds or so,auto power off, the same is true for me under synthesis.I changed the backup BIOS and flashed it back. After pressing the power button, the screen turned on for 2-3 seconds. There was no auto power off in half an hour. The touch panel and keyboard were normal.

Repair of Shenzhou z7-kp7gz notebook splash screen

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Shenzhou Z7-KP7GZ notebook boot display flash screen; Motherboard problem opens drawing positioning to screen display interface signal normal seems 0V And this one is 5V, so after the Q27 in Figure 1 is removed, the power-on test is perfect, and the troubleshooting and maintenance of the bright machine are over

Lenovo t440 notebook battery large current maintenance

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Find the battery chip pU7 bq24760, and test large current on the bare battery board. Your hand just touches a place, which is very hot. Look at MOSFET, which is a common S-tube of q85, pq13 and pq34.Trace the source of q85 and replace it from think Parts motherboard. Plug in the battery and power on it. It will not be large current when it is powered on. It will not be auto power off when it is turned on. It can be charged and troubleshooting when it is installed for testing.

Repair of Lenovo E460 laptop dark screen

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Lenovo E460 laptop turned on the dark screen and began to dismantle the screen. It was found that Capacitor,Short circuit and Fuse around the screen booster chip were burnt out. The Current heating test method was used, and 3V VCC Current heating test was added to the back stage of Fuse. After touching the boost chip, it was hot to remove it. It was found that Short circuit was eliminated, and the screen was delivered directly. The new screen was replaced and the fault was solved.