Having problems with your PC Laptops ?

I have an HP zd 7040 Laptop. It was given to me because it did not work. I have disassembled the laptop and have the mothjerboard sitting here on my work bench by itself. All components have been taken off of it. I replaced the ac adapter before I did anything else to the Laptop. It did not fix the problem. The laptop is dead. After getting the motherboard to my work bench, I hooked up the power adapter to the board and the blue led's blink for a split second, then it is dead again. HP was no he


Answers :

Re: I hooked up the power adapter to the board and the blue led's blink for a split second, then it is dead again.\015\012\015\012\015\012
\015\012The motherboard is faulty, and your friend was right, a common cause is the DC socket on motherboard.\015\012
\015\012first test the adapter reading volts, just in case. Volts may differ up to half volt from value on specifications.\015\012
\015\012Test the solder joint at the base of connector, if they have continuity, then test the components around the connectors, if one of the resistors in there had blown you will get no power.\015\012
\015\012The DC connector is the most common fault in your circumstances. However there are over 1K different faults that can affect the motherboard causing similar symptoms.\015\012Normally motherboard is not serviced at component level, if problem is not the DC socket, and no component near to socket, and you do not spot any fault after a superficial test, you may need to replace the motherboard.\015\012Start grabbing your multimeter and testing DC socket.
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