VIORE PDP4210EA Service Manual page 111

4. Trouble shooting.
Horizontal (line)
1. Check FPC
In case of horizontal 1 or more line, it is due to FPC or panel inside .
ctrl b/d, Y b/d is just normal.
2. Check scan IC
Check with same method that presented in Horizontal (bar).
FPC electrode open
Panel electrode
Insulation break down
38 /40
Horizontal 1 line.