My HP-34C is always running Pr Error when I put the switch on (except when I trun It very quickly). I try hundred of pages on the web without succes. Connector are clean, but the ribbon (the one which is connected to connector of the battery pack) seems not properly rebuild (!). Does anybody know how to keep permanent memory (ie no Pr Error when the calculator is ON) ? Perhaps a photo of the connection could help me in case of a non properly rebuilt ribbon. Or also the disposition of the three ships not soldered.
Sorry for my poor English (I'm living in France) Thank you