Sylvania 6842THG, Service Manual

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2-3-2 PZ3PDMOP
NO display (operating Voltage but an image doesn’t exist on Screen)
–> No Display is related with Y-MAIN, X-MAIN, Logic Main and so on.
This page shows you how to check the boards, and the following pages show you how to find the defective
board.
No Display
Logic Main
[LED 2011 Blinks]
Y – Main Broken
panel
Check
LVDS Cable
LED 2010; Green
Fuse F2000, F2001
CN2026 Cable
Replace Logic B’d
NO
YES
NO
Fuse
Replace Y-B’d
OPEN
FET, IGBT
Replace Y-B’d
SHORT
Replace Logic B’d
X – Main
YES
Short
Logic-main
Y-main
Y – Buffer
Open
Y- main C Check P Point oint
Check
F5001 for Vdd (5V)
F5004 for Vcc (15V)
F5003 for Vs(200V)
Check
Q5009 ~ Q5021
1
2
3
1
1
2
3
4