Read Sony KDE-V42A12U / KE-V42A10E Service Manual online
4.2 DEFECTS, SYMPTONS AND DETECTIVE PARTS
Condition Name
Description
Related Board
■ No Display
Operating Voltages exist, but an Image
doesn't exist on screen
PSU, Y-MAIN, X-MAIN, Logic Main,
Cables
■ Abnormal Display
Abnormal Image(not open or short) is on
screen.
Y-MAIN, X-MAIN, Logic Main
■ Sustain Open
some horizontal lines don't exist on
screen
Scan Buffer, FPC of X / Y
■ Sustain Short
some horizontal lines appear to be
linked on screen
Scan Buffer, FPC of X / Y
■ Address Open
some vertical lines don't exist on screen
Logic Main, Logic Buffer, FFC,TCP
■ Address Short
some vertical lines appear to be linked
on screen
Logic Main, Logic Buffer ,FFC,TCP
◈ Defect: Address(vertical stripe) Open
◈ Defect: Address(vertical stripe) Short
■ Symptom : A line or block does not light up in address
electrode direction.(1 line ,block open)
■Cause
① manufacturing : Panel electrode single line/
foreign material./electrostatic/TCP defect
② Parts : TCP, Board connection defect
③ Operation : Assembly error / Film damage
■ Symptom: Another color simultaneously appears because adjacent
data recognizes the single pattern signal
■Cause
① manufacturing : Panel electrode short / Foreign material
conductive foreign object inside TCP
② Part : TCP/buffer defect lighting electrode cutting
defect
- 2 1 -
Click on the first or last page to see other KDE-V42A12U / KE-V42A10E service manuals if exist.