8 Krypton

Re: 70 watt Power error message

Hello washpatech,
 
Welcome to the Dell Community Forum,
I would suggest to try another known good A/C adapter If possible, but If this doesn't work then their is a problem with the motherboard.Contact Tech Support , If additional help is needed .Hope that this helps.
Thanks,
 
 
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selbyclark
1 Copper

Re: 70 watt Power error message

My Dell Latitude C840 displays the same "warning: 70 Watt (20V, 3.5A) AC adapter detected" error message even with a known good 90 watt AC adapter is connected. It also won't charge the batteries anymore.

The laptop is clearly not under warranty anymore, but it was/is a really solid machine and I would like to repair it if possible. Does anybody know if this is the internal power supply that has failed and is it a replaceable component or is it part of the motherboard?

Any info on parts availability or even locations to send it for repair if I can't do it myself would be greatly appreciated.

Thanks,

Selby

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