Daewoo DP-42GM, Руководство по обслуживанию

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Main PCB Trouble Diagnosis
connection(PS01~PS04). Otherwise check SCANL PCB s connector connection(PS05~PS08
). Secondly, check if there are no dust, bits of iron, or any other extraneous material between
the connectors. Thirdly, reassemble and check if the problem is solved. If the problem still
exits, try to replace problematic SCAN PCB.
- Block Horizontal Line Occurrence : Firstly, check problematic SCAN PCB s ( SCANH PCB if
the Block Horizontal Line exists at the upper part of the screen, otherwise SCANL PCB)
connector( PS01~PS08, PY01~PY04 ) condition. Secondly, check if there are no dust, bits of
iron, or any other extraneous material between the connectors. Thirdly, reassemble and check if
the problem is solved. If the problem still exits, try to replace problematic SCAN PCB.
(4)When weak Discharge exists on screen but OSD screen can not be seen
<1> Definition of this symptom
- When the set was turned on, screen is BLACK but Weak Discharge (luminescence) exists.
- When OSD does not show on screen and the set does not respond to remote controller or KEY
panel s any button.
<2> PCB CHECK PRIORITY
- VIDEO PCB
<3> Trouble Repairing Procedure
- If no problem in Connection(VIDEO DIGITAL), replace VIDEO PCB