Laptop power problem - DFWstangs Forums
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post #1 of 3 (permalink) Old 01-20-2005, 09:44 AM Thread Starter
Procrastination Racing
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Location: Bedford, TX
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Laptop power problem

My g/f has an IMB thinkpad 770. I replaced the end of the power supply cord that plugs into the laptop. The only end I could find that would fit was two piece that allows you to change polarity. The plug came apart the other day and she plugged it in with reverse polarity. The power supply and laptop have polarity indicators on them. I checked the power supply voltage (16.37VDC) and polarity (center positive). The laptop will power up on the battery but if the cord is plugged in with proper polarity, the laptop shuts down. While shut down, I can reverse polarity for a split second(I know this is not good) and there will be a small spark at the plug. Then the laptop will work again.

Anyone ever experience anything like this?
Good repair shop recommendation?
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post #2 of 3 (permalink) Old 01-20-2005, 10:10 AM Thread Starter
Procrastination Racing
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Location: Bedford, TX
Posts: 9,226
I got a hold of another IBM power supply and tested it to make sure it matched the one I have. It does. I plugged it into the laptop while running on battery and the laptop still shuts down. The battery charging LEDs on the laptop do not light when it is connected to either power supply.
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post #3 of 3 (permalink) Old 01-20-2005, 10:31 AM
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I'll give you a dollar for it :P but seriously though sounds like a battery charging card problem.


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