No Picture - Dell 2209WA Service Manual

Service Manual
5. Backlight on,key function and LED accurate indication ok but no picture
Backlight on,key function and LED
accurate indication ok but no picture
YES
YES
IS the display is white and cannot
display OSD when press key?
NO
VGA
Is display selftest picture at
VGA mode or DVI mode?
DVI
YES
Is there DVI signal in U105 #9,
#10,#12,#13,#15,#16,#18 #19?
Check DVI input circuit
(D202~D209 and
R201~R208)
48
Is the panel enable
signal at 73# of
NO
Check DC 5.0V on
U105,if no check
CN103#1, #2, #3
Q104 circuit or cha
U105,if yes Check
Q101 circuit
Check VGA input
Is there R.G.B signal in
circuit (D105, D1
NO
U105 #28, #25 #23?
D103 R114 R115 R1
C113 C114 C115)
Yes
Are there data output on YES Is the FFC cable
U105#77~#86, inserting ok,if no
#91~#100 reinsert else
change FFC cabl
No
Change U105
END