A22 keeps making me reset the date, but CMOS battery is new.

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tselling · #1 Post by **tselling** » Wed Jan 27, 2010 12:04 pm

I have an A22 that will not keep the date, every time I unplug and turn it off it loses the date and I get the bios prompt to set it. I have changed the little CMOS battery for a new one but same problem. Anyone have any ideas on this?

ajkula66 · #2 Post by **ajkula66** » Wed Jan 27, 2010 1:12 pm

Look for corrosion around the spot where the CMOS battery plugs in. That was culprit in a couple of ThinkPads that I've seen with this issue.

Good luck.

tselling · #3 Post by **tselling** » Sun Jan 31, 2010 3:36 pm

How did you fix any corrosion? Corrosion seems likely since I had trouble pulling the last battery connector off. I don't specifically see corrosion but I haven't taken the laptop apart.

#4 Post by **rkawakami** » Sun Jan 31, 2010 3:55 pm

Most corrosion can be taken care of with a cotton swab and isopropyl alcohol. However, given your description of having some problem with removing the previous battery connector, I'd go with a detached lead of the battery connector to the motherboard. That might be solved with a little re-soldering touch up, or a new connector if it's damaged too much.

tselling · #5 Post by **tselling** » Mon Feb 01, 2010 7:20 pm

I guess that means I have to take this thing apart

A22 keeps making me reset the date, but CMOS battery is new.

A22 keeps making me reset the date, but CMOS battery is new.

Re: A22 keeps making me reset the date, but CMOS battery is new.

Re: A22 keeps making me reset the date, but CMOS battery is new.

Re: A22 keeps making me reset the date, but CMOS battery is new.

Re: A22 keeps making me reset the date, but CMOS battery is new.

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