Table of Contents
Advertisement
Troubleshooting for LED 1 Time Blinking 1-1
TH- ##JX800*, 900W (Android TV)
LED blinks
1
If the IC7800 detects
1.abnormal current of backlight LEDs ( = Backlight LED broken or Low(No) VLED voltage )
2.abnormal DC/DC power supply of IC7800 (does not rise up the VLED voltage )
or the IC7800 does not work (No Vcc or No BL_ON/PWM signal or defect itself),
the IC7800 output BL_SOS signal to IC8000
D7431
Q7805/06
C7433
T7301
D7421
C7423
16V
P
Detail error
BL_SOS (LED driver)
Q7851
64V(*)
Q7804
Q7421/22
SRV-16V
Q7404
(*)VLED : The DC level is different by the LCD panel.
LED blink 1 time.
L7851
110V(*)
SRV-VLED
Q7887
LED
Drive
IC7800
Q7888
Vcc
BL-ON
PWM
16V
SUB-ON
Board may defect
Panel / P
10-13
LCD Module
Anode
Back
Cathode1
light
1
2
:
7
8
Cathode8
P3
P2
A02
(Low=Normal)
BL_SOS
15
11
14
10
BL-ON
12,16
13,16
PWM
1 - 4
1 - 4
9
13
SUB-ON
LCD Panel
T-CON
board
A
IC8000
SoC
57
Hide quick links:
Advertisement
Table of Contents
