Address
304 North Cardinal
St. Dorchester Center, MA 02124

Work Hours
Monday to Friday: 7AM - 7PM
Weekend: 10AM - 5PM

Category Blog

Laptop Repair Guide

Samsung NP-R428 notebook does not trigger repair

After removing D516, the standby chip is no longer hot. Short circuit was found in the third pin of D516, which was only 30 to the ground. The circuit diagram shows that P3.3V_MICOM connects two resistors and three capacitors. Troubleshooting after removing the capacitor.

yx
2023-04-06

Laptop Repair Guide

Shenzhou Feitian U147 notebook is not turned on for repair

Shenzhou Feitian U147 notebook is not turned on for repair Machine model: Shenzhou Feitian U147 notebook Fault symptom: the notebook does not turn on. Maintenance process: Shenzhou Feitian U147 notebook, standby at 0.010, press the switching current to 0.099, then…

yx
2023-04-05

Smartphone & Pad Repair Guide

OPPO Reno6 enters the water without 4G signal repair

After disassembling the machine, no corrosion trace was found in the signal part on the front of the motherboard. The main power supply was above and the 1.8V was below. The capacitor was seriously corroded, so the brush fell off and the resistance of the foot was disconnected, and the flying wire was borrowed for electricity.

zll
2023-04-05

Laptop Repair Guide

Shenzhou Feitian U147 notebook is not turned on for repair

yx
2023-04-04

Blog, Smartphone & Pad Repair Guide

IPhone 11 Pro mobile phone standby power consumption fast repair

After testing, the mobile phone leaked 20mA when it was powered on, and it was found that one chip had broken corners by layers. Looking at the schematic diagram of Xinzhizhao software, it was found that it was powered by USB accessories, so a chip was replaced, and there was no leakage when it was powered on.

zll
2023-04-04

Smartphone & Pad Repair Guide

After Huawei Glory 9X mobile phone enters the water, WiFi can’t open the fault repair

There is a resistor corrosion on the motherboard, so directly remove the corrosion resistor and make a short circuit. After power-on test, the mobile phone WiFi can be turned on normally and the fault can be repaired.

zll
2023-04-03

Laptop Repair Guide

Mechanical Revolution Deep-sea Ghost Z2 Air Notebook Maintenance without Bootin

Mechanical Revolution Deep-sea Ghost Z2 Air Notebook Maintenance without Booting. Measure 3.3V to ground, and the resistance is zero, which means 3.3V short circuit protection. 3.3V power supply is distributed at dozens of points on the motherboard, which burns the…

yx
2023-03-31

Smartphone & Pad Repair Guide

OPPO R15 mobile phone does not display fault maintenance when it is turned on

Directly replace a good screen for testing, and find that the phone can be turned on normally, and the screen can display images, indicating that the original screen is damaged by water. Replace a new screen directly and fix the fault.

zll
2023-03-31

Laptop Repair Guide

HP DA0R13MB6E1 notebook can’t be repaired with 3V5V.

Hp DA0R13MB6E1 notebook does not produce 3V5V, so you can try to replace the stable capacitor first, and then replace the chip. What is shared below is the process of changing the line.

yx
2023-03-30