The mission of the most depressed in Guangzhou is the bad books, and began to think of the water and collision-induced failures are my Psycholagny seems to come out, in JS, where is the power supply chip that had broken, HP NC6000 classic fault , from 260 yuan to 200 yuan fix counter-offer, I knew I had been black, but never thought that would be black so much. Baidu look back, cost only 40 yuan, I count 60 charges that he hand-bar, but also black, I 100, black-black ah ah ah black! Reproduced this article, hope that the same HP NC6000 notebook with a friend experience this problem can be themselves, just blame I began to search for the keywords are too idiot. “A long term resident or the opening of the old books can not be machine“I mixed it found that keywords, at least what the product should be found for what is, and I too had an idiot. Out a few keywords out for people like me an idiot search this article for fear of being JS dirty money. “HP NC6000 notebook crash”“HP NC6000 Notebook Fault”“HP NC6000 notebook they can not machine” Enclosure: By the end of July to buy second-handNC6000, Bought used for about a month, there NC6000 classic problem, start charging lights, fans turn, 5 seconds after power outages, If the hand on your keyboard to boot, so they spent about a month, the day before finally will not turn on, and no matter how the keyboard can not be forced to start … … Then search on the Internet, the reasons for divergent views, power supply module issues, CPU Block, Xu Han, graphics Xu Han, Northbridge cold solder joint … … Shining Gonglue disassemble, began to wonder is the North Bridge cold solder joint, putting pressure on the North Bridge and try to start, is invalid. Continue to doubt the power module on-board power supply chips, pressure, invalid … …. After many setbacks (N hours), and finally found that holding down the power outlet near the PCB, can start to look for materials found here is the PCB on the back of CPU core voltage power supply chip MAX1987. MAX1987 should be used in conjunction with MAX1715-board power supply module from the PWM controller, the strange thing is MAXIM’s website does not have information on the chip … … Initially that it is the MAX1987 cold solder joint, followed by the easier to handle. Because do not have tools, Sunday afternoon, an electronics market to buy specialized tools, electric iron, solder, rosin, some small tools, a total of 40. MAX1987 is a QFN48 packages, a small pad with a sharp tip carefully all the pins Welding again … …. Boot, successful start. Recently, many people encounter NC6000 not booting problem, do not rush to the JS to do the first BGA (expensive … ..), there are hands-on ability to disassemble components yourself, try to press the power interface near the See if he can turn, if they can boot, then in all likelihood the back of the MAX1987 fake solder PCB here. Of course, Block is also near the CPU, but due to CPU block has front and back of the sheet metal Done to strengthen, I think the CPU block the possibility of cold solder joint is relatively small. As the design flaws, NC6000 power outlet near the lack of support, plug the power plug is easy for the PCB bending, welding together Then when the process issues, it is easy for the QFN package MAX1987 cold solder joint, resulting in no CPU power. Drawings of the red box location is MAX1987.  |
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