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5.1.2
Bar Defect (Vertical)
Check each section with the following method. If there is a
problem, replace or repair that part. If not go to the next section.
Connector
Check the TCP connector and cables. If not connected well, it
will result in a bar defect and abnormal display behaviour.
Check here
Figure 5-9 Connector check (1)
Check here
Figure 5-10 Connector check (2)
Checking the TCP
Confirm whether the TCP was torn or chopped.
Figure 5-11 TCP torn
Service Modes, Error Codes, and Fault Finding
Bar
F_15590_078.eps
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Off
F_15590_079.eps
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TCP
torn
F_15590_080.eps
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LGE PDP 2K6
TCP IC
broken
Figure 5-12 TCP IC broken
Control Board
The Control board supplies the video signal to the TCP. So, if
there is a bar defect on screen, it may be a Control board
problem.
MCM
Buffer
IC
Array
Resistor
6 line
TCP
192 Line output
Figure 5-13 Control board address flow
5.1.3
Line Defect (Vertical)
In case of one line open or shorted, check for dirt (foreign
substances) in TCP connector. First, try to remove the dirt with
compressed air. If, after this, the same line appears again,
replace the panel.
Line Open or Short
This phenomenon is due to a TCP IC internal short or electrode
problem. In this case, replace the panel.
1 electrode open
(on flex foil)
1 line open
Figure 5-14 Single line defect
5.
EN 15
F_15590_081.eps
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R - array
F_15590_082.eps
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F_15590_083.eps
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