Intermittent no cell power/no cell power 2

Mar 2, 2015
22
Gilbert, AZ
This is my 3rd board over the past 17 years and just put in last year. Started getting intermittent no cell power and no cell power 2 errors this weekend. Checked the k1 relay and no burn marks. I went ahead and resoldered the pin anyway. Can anyone tell me what this circled area on the board controls. It looks like one of the pins had a slight burn. I added a bit if solder to this area as well. So far no errors but it was intermittent over last 3 days.
 

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