33
/39
4. Trouble shooting.
Vertical defect (line)
This phenomenon is due to COF IC inside short or adherence part of the Film and rear panel electrode problem.
In this case, replace the panel.
1 line open or short
Line open or short with same distance.
1 line open
1 electrode open
This is an MCM of Ctrl b/d defect. MCM can not be replaced separately. So replace the ctrl b/d.
In case of 1 line open or short , check foreign substances in COF connector.
First blow up the connector with your mouth to remove foreign substances which may be on it. And then if the same line
appears, replace the panel.
MCM (Multi Chip Module)
