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. Perform Backlight Test.
7.
BLU_PWM
√
0V- Off to approx 1 – 3.3 V pending Backlight dim level
If missing/error replace
√
Main Board
.
Fuse
CNM803
1
Fail Count
7
A13V
2
ANA-DIM
8
POWER_ON/OFF
3
A13V
9
A13V
4
OD_ON/OFF
10
GND
5
A13V
11
GND
6
BLU_PWM
12
GND
CNL802
1
2+
9
1+
2
NC
10
NC
3
NC
11
NC
4
2-
12
1-
5
NC
13
NC
6
NC
14
NC
7
NC
15
IF2
8
NC
16
IF1
CNL802
CNM803
4-3
4. Troubleshooting
