Any explanation why a LHe would randomly lose sync with the external reference being fed to it from a Lietch BB generator? I have two other LHe's in the house properly hooked up to the same BB generator and have not had this problem. I have eliminated the BOB (not Zelin:) and it still does not recognize ref. randomly. Meaning I can have it up and running, re-boot, it loses sync. I reboot again..it's sync'd. Go figure! I have control panel on Ext Ref. Would it have anything to do with what is routed to the LHe video input?