Having a power supply problem on a Samsung UN55D6400UF.
This is one of those LED smart TV's (2011), with the led driver is built into the PSU.
Here's the problem:
- locked in Stand-by mode (blinking 2 red)
- Relay cycles on/off (about 5 secs.)
- No Backlight
(with CNM803 disconnected from the Main board - Forced Backlight does not turn on any of the Leds.)
I'm assuming that the Led driver (circuit) is what's causing the protection mode, and shutting down the power supply ?
All readings are at the PSU with CNM803 disconnected from Main board (forced backlight mode)
CNM803
1) 5.30
2) 0
3) 5.09
4) 0
5) 0
6) 0
7) 12.80
8) 0
9) 12.80
10) 12.80
11) 17.09
12) 4.74 *
13) 17.09
14) 0
15) 0
16) 0
17) 5.40
18) 5.40
19) 5.40
20) 3.20
21) blank
22) blank
* BL_On only generates 0.24 vdc when main board (CNM803) is connected to P/S
CNL802a
1) 62.7
2) 62.7
3) blank
4) blank
5) blank
6) blank
7) 5.90
8) 5.70
9) blank
10) blank
11) 0
12) 62.70
13) blank
14) blank
15) blank
16) blank
17) 0
18) 5.60
19) blank
20) blank
21) 1.80
22) 1.80
CNL802b
1) 124.1
2) 124.1
3) blank
4) blank
5) blank
6) blank
7) 0
8) 62.7
9) blank
10) blank
11) 124.1
12) 124.1
13) blank
14) blank
15) blank
16) blank
17) 62.7
18) 62.7
With all that being said (whew)
I'm drawn to the discrepencies in:
CNL802a 11/12 and 17/18
CNL802b 7/8
Are the Led outputs all suppose to be in tandem ?
This is one of those LED smart TV's (2011), with the led driver is built into the PSU.
Here's the problem:
- locked in Stand-by mode (blinking 2 red)
- Relay cycles on/off (about 5 secs.)
- No Backlight
(with CNM803 disconnected from the Main board - Forced Backlight does not turn on any of the Leds.)
I'm assuming that the Led driver (circuit) is what's causing the protection mode, and shutting down the power supply ?
All readings are at the PSU with CNM803 disconnected from Main board (forced backlight mode)
CNM803
1) 5.30
2) 0
3) 5.09
4) 0
5) 0
6) 0
7) 12.80
8) 0
9) 12.80
10) 12.80
11) 17.09
12) 4.74 *
13) 17.09
14) 0
15) 0
16) 0
17) 5.40
18) 5.40
19) 5.40
20) 3.20
21) blank
22) blank
* BL_On only generates 0.24 vdc when main board (CNM803) is connected to P/S
CNL802a
1) 62.7
2) 62.7
3) blank
4) blank
5) blank
6) blank
7) 5.90
8) 5.70
9) blank
10) blank
11) 0
12) 62.70
13) blank
14) blank
15) blank
16) blank
17) 0
18) 5.60
19) blank
20) blank
21) 1.80
22) 1.80
CNL802b
1) 124.1
2) 124.1
3) blank
4) blank
5) blank
6) blank
7) 0
8) 62.7
9) blank
10) blank
11) 124.1
12) 124.1
13) blank
14) blank
15) blank
16) blank
17) 62.7
18) 62.7
With all that being said (whew)
I'm drawn to the discrepencies in:
CNL802a 11/12 and 17/18
CNL802b 7/8
Are the Led outputs all suppose to be in tandem ?
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