Thank you for reply digital, I know about what you say of making stable xtal... Yes this is true, but what my problem is that I am only used to following proper schematics and not personal shortcut schematics. I can make (I think) anything just as long as the schematics is properly done. I think this one is properly done too, but not really the universal method that most of us here understand. It is like this schematics modification is made in another language... I wish you understand my point... So what I really need is not explanation why this modification is made, but a clearer schematics that show how really this modification is inserted into the old schematics... Can you please modify the gif file to make us understand
Best Regards, Lino