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yx

yx

  • Joined: 2021-11-01
  • Articles: 558

Thinkbook 14g2tl maintenance without charging

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Thinkbook 14g2tl maintenance without charging. ThinkBook 14 G2 ITL can’t be charged with electricity. The original composite pipe was K03S, and a HP8S36 was replaced. The charging light connected to the power supply was already on, and everything was normal…

Lenovo Y470 Boot Dark Screen repair

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Lenovo Y470 Boot Dark Screen repair Open Xinzhizhao software and find the Y470 point bitmap. First, find that the main power supply pins on the upper screen of the motherboard are 1 and 2 pins +LEDVDD, and the multimeter found…

The Schematic, Circuit Diagram PDF file for Circuit diagram of MS-7A38R8.1(MSI-B450MPRO-VDH)

The Schematic, Circuit Diagram PDF file for Circuit diagram of MS-7A38R8.1(MSI-B450MPRO-VDH)  File info Pages: 88 Format: PDF File Size:2.2MB  Schematic Preview A1419-820-00609-A (2)_0_split  Download Download XinZhiZao maintenance software to view the full MSI Motherboard 7640-14-0622 Schematic Diagram.

Dell’s DELL VOSTRO 14-5468 notebook is not turned on for repair

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The charging indicator is not on. Focus on detecting isolation circuit and charging circuit. Measured along the circuit towards the power interface, it is found that one side of MOS transistor PQ741 has a voltage of 19V and the other side has only 5V. After replacing PQ741, the voltage at the common point is normal, and the voltages of 3V and 5V also come out. The machine was successfully repaired.