The "Dell AC power adapter type cannot be determined" problem cause

The "Dell AC power adapter type cannot be determined" problem cause

And yes .. as many people suspected the small pin of the connector is the DATA line and is connected to a Dallas DS 2501 1-wire memory chip in the power brick. The 2501 is 512 bit EPROM with also an unique identification code. Measurement by oscilloscope made it clear that this chip is indeed DEAD, the 'high' voltage on the DATA line was about 0.6 V while it should be at least 2.2 V.

POST COMMENT

How Do I Know if My Dell Battery is Bad? Dell Vostro 200ST How To Make Dell Latitude Cpts Series Li-ion Rechargable Battery For A Long Life Plus size modelling Dell Hot Selling Battery How To Use Dell Latitude D620 Battery Correctly How To Replace A Key On Dell Latitude D620 Keyboard Rich Franklin Knocks the Iceman (Chuck Liddell) Out Cold Total Power Failure When Using a Dell XPS M1530 Battery How to change the key pad on the Dell Latitude D600 Drawing Visitors To Wisconsin Dells How do get started in the modelling world How to Maximize Dell Precision M2300 Battery using time