tv cyberlux chassis 34BI,
Friend remove the buttons to see if the problem does not go away I tell you that these TVs have a 5.1v zener of protection in the line of keys or buttons I will not tell you the exact position of rights to secure this line of buttons to help you that this arrives at the micro
Please take decturs of ic 101pin 80 and 78 you should have 3.2v if this voltage is not there check r719 r721 r722 check and change c771 from 1nf
And also the buttons as you comment your problem or is the buttons or one of these resistance or capacitor
Good morning friends for your help the problem has already been solved on the tv change the buttons and the R722, thank you very much at any time we will be in touch again have a happy day
I am glad friend that will solve happy day just like you, any additional questions do not hesitate to ask us