The tv displayed as shown in the picture above.Normally the major suspect for this type of fault is the vertical ic.it uses tda3563B as the vertical ic,vcc supplied to this ic is 27v which is correct and i decide to change the ic.I was suprised to see the tv display the same horizontal line on screen of the tv that means the fault is not with the vertical ic so i need to troubleshoot further.Fortunately i have the same model of this tv in my workshop and it is working perfectly.i start to compare the two panels and i detect that pin 3 of the vertical ic(tda3653b) is the vertical drive which feeds directly from the oscillator ic tda8361 and around 2.4v on the working panel and 0.55v on the faulty panel.I change the oscillator ic and the fault was gone.The tv now works perfectly.
1 comment
https://www.blogger.com/comment.g?blogID=2794571448937107349&postID=1366431548314984406&page=1&token=1681240615902&isPopup=true
Post a Comment