Computer motherboards 1. variety of cable short circuit fault variety of cable should not pass at short off at the pass unreasonable; (IC chips, resistors, capacitors, transistors, inductors and other components pin down, short circuit, breakdown, connections, pins and power supply, ground short circuit conduction; printing plate line disconnection, short circuit and pad off) and so on. These are common faults. 2. "DMA" controller and secondary circuit fault "DMA" controller more powerful, higher failure rate; auxiliary circuit chips and input circuit are also prone to failure. 3.RS-232 serial interface controller failure the PC serial interface controller has a separate, Qinhuai District Toshiba laptop repair service center, but also be combined with other interfaces together. Serial Interface higher failure rate. Nanjing Xionghai laptop repair center is one of an IT industry services company best at notebook chip-level maintenance, the company has advanced detection equipment and laptop computer maintenance repair tools, experienced professional notebook maintenance engineers and sufficient spare parts library favorable guarantee maintenance of quality and time, at repair 严保维 premise of quality, Qinhuai District Shenzhou notebook repair service center, reduce maintenance time for the computer does not start the repair rate of 90% or more, use has advanced equipment, can repair the notebook, adverse Huaping LCD screen repair, turn off, the battery is not charging and peripheral equipment failure, Nanjing notebook repair service, motherboards, monitors, hard drives, etc., Qinhuai District Acer laptop repair service center, is only a few live in Nanjing chip level One repair capacity of the company, the company also provides laptop computer upgrades, laptop accessories and sections with other services.