Question about IBM Computers & Internet
SOURCE: Laptop will not power on.
It is possible that one of the soldered terminals/pins of the power jack of the laptop is disconnected. You can try gently moving the plug of the Charger/AC adapter while connected and see if an indicator light will lit (even if momentarily). If yes, then it is safe to assume that a terminal/pin is loose and would need to be resoldered. If no, then since there is power from the Charger/AC adapter, the laptop's internal circuitry maybe at fault. Most probably parts in the regulator circuitry. This could be as simple as a surface mounted fuse or a 3 terminal voltage regulator. In any case, the unit has to be opened and diagnosed. To do so, you must be familiar with electronic components/circuitry, use of a DVM and a low wattage soldering iron. Should you be uncomfortable with this, perhaps your best bet would be to seek the services of a qualified laptop technician.
Hope this be of some idea/help. Post back how things turned up or should you need additional information.
Good luck and kind regards.
Posted on Nov 03, 2007
The most likely problem is that the onboard power supply has failed, usually a capacitor has burned out. Or it could be a loose DC supply socket (they only need to have one loose pin on the motherboard.)
Posted on Nov 03, 2012
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Your DC connections is loose on the system board:
Find your manual:
HMM will provide you instructions for troubleshooting, diagnostics, removal and replacement laptop hardware. All IBM HMMs are publicly available. You can find HMM for your laptop on the IBM website or you can follow the link below. All HMMs are in pdf format, so you can download them and use at your convenience. For hardware replacement instructions find "Removing and replacing a FRU" chapter.
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