I know many of you are super techs at programming and troubleshooting T7316e phones but do any of you, like me, actually repair the phones or do you just replace the phones? My problem is the line/feature display shows the circle and arrow at each button position whenever the phone is powered up. The normal triangle works fine but it is imposed on the circle and arrow. I have not gotten into troubleshooting the phone parts but I think it might be the display or the main motherboard causing. Any thoughts?