I have 2 digiprogs. Both work ok for OBD but one of them will not read all eeproms. One of them is fine but the other will only read 95xxx eeproms and not 93cxx or 24cxxx. I suspect there is something wrong with the buffer chips (hc125's etc). The problem is that all of the chips have had the tops ground off so I don't know which chips to change. Can someone help me with this please.