SMPS POWER
Power TV On.
1.
PS_ON
√
.
2Vdc
(when off) changes to
3.3Vdc
(on)
May already be On if IoT USB is loaded or TV Smart Things Hub mode is active.
-
if voltage error or no change.
2.
Jog Function Control Test.
√
If OK replace Main Board.
3.
All
√
A13V
supplies to
full voltage level
12.7VDC
.
If any wrong voltage, remove the SMPS connector to Main Board.
4.
A13V again for 12.7VDC.
√
If OK replace Main Board.
5.
If still wrong voltage replace SMPS.
6.
OD
√
(Over Voltage Detect) : 3.3Vdc (Operating Normal)
If 0V or changing, an SMPS or Panel error exists.
7.
Perform Backlight Test.
8.
Backlight On/Off
√
0V Off to 5Vdc ON.
If missing/error replace
√
Main Board
.
49" / 55" SMPS Front
Fuse
CNM803
CNL801
CNM803
1
GND
2
GND
3
GND
4
GND
5
Vamp
6
GND
7
Vamp
8
OD_Level
9
Vamp
10
Fail Count
11
A13V
12
OD_ON/OFF
13
A13V
14
BLUEON/OFF
15
A13V
16
PS_ON/OFF
17
A13V
18
GND
19
GND
20
GND
21
PWM8
22
PWM7
23
PWM6
24
PWM5
25
PWM4
26
PWM3
27
GND
28
PWM2
29
PWM1
30
ANA_DIM
CNL801
1
IF2
2
IF1
3
1+
4
5+
5
1-
6
5-
7
2+
8
6+
9
2-
10
6-
11
3+
12
7+
13
3-
14
7-
15
4+
16
8+
17
4-
18
8-
4-4
4. Troubleshooting
