Helo everyone!!!!!! I build this voltmeter a year ago!I use it for few measuements to test it and it was ok!I didn`t need it until i build a power supply!!!! So i find my voltmeter to combinate it with my power supply!But, my voltmeter don`t want to work correctly!When i put any voltage on it`s input it start to oscilate! So if i put 5 V on Led display i will se 5.09,5.04,5.00,4.98,5.05......It change value from second to second and it can`t stabilize it self. For power it i use only positive supply +5V, but this can`t be a problem because it`s work just fine with +5V a year ago. I had thought that i maybe burn the IC with static charge or wrong polarity but everything else work fine so i don`t think so. Any idea what it is wrong?????? ??? ??? ??? ??? ??? ??? ??? Sorry for bad english!!!!!