MiTAC E-8590 - 8.3 VGA Controller Failure LCD No Display

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LCD PC E
LCD PC E
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8590 MAINTENANCE
8590 MAINTENANCE
8.3 VGA Controller Failure LCD No Display
Symptom: There is no display on LCD although power-on-self-test is passed.
U5
North Bridge
VT8703
P6
P4
FPD0_R[0:5] FPD0_B[0:5]
FPD0_G[0:1]
CP15, CP16, CP14,
CP17, CP18 100PX4
FPD0_R[0:5] FPD0_B[0:5]
FPD0_G[0:1]
CP13, CP12, CP11,
CP10 100PX4
RP53, RP54, RP52,
RP55, RP56 22X4
RP51, RP50, RP49,
RP48 22X4
FA4, FA3, FA5, FA2, FA1
120OHM/100MHz
FA6, FA7, FA8, FA9
120OHM/100MHz
CP5, CP6, CP7,
CP8, CP9 47PX4
CP1, CP2, CP3,
CP4 47PX4
LCD_ID[0:3]
R[58:61]
1K
PANEL_CLK
PANEL_DE
PANEL_VS
PANEL_HS
L8 BEAD_130Z/100M
L7 BEAD_130Z/100M
L6 BEAD_130Z/100M
L5 BEAD_130Z/100M
CLK
DATA_EN
VS
HS
U4
AAT4280-3
F2
TR/3216FF-3A
L4
0
TXT0_B[0:5], TXT0_G[0:5]
TXT0_R[0:5]
TXT1_B[0:5], TXT1_G[0:5]
TXT1_R[0:5]
+3VS
+3VS
+5VS
C88
0.1U
P6
J9
EVEN SIGNAL
CONNECTOR
TO LCD PANEL
J8
ODD SIGNAL
CONNECTOR
TO LCD PANEL
P6
35
33
31
29
36,37,381
ENVGA
4,6
3
Imax=2A
J27