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Review title: batter selection button won't come up - might be killed by heat
Product review: I left 4 batteries on the unit for overnight refresh. The next thing I found was the #3 button sink and won't come up any more. The battery was very hot. I believe the #3 button was melt by heat. I have version 33 and purchased on 12/1/2006. This unit lasts 3 weeks or so.
