Samsung UE40f6650SS - LED Blinks but Won't Turn On: Possible T-CON Issue (LSF460HJ02 BN41-02069)

Hello

TV as in the description. After switching on the network, the LED lights up with continuous light indicating work on st-by. After switching on, the LED blinks and stops all the time anyway. In general, TV can not start. I suspect T-CON, but I would like to make sure. Unhooking him does not change anything. After unplugging the BLU on / off from the connector on the power supply board, the backlight gets up without any problem (when the panel is off, the signal is shorted to ground). The problem seems to be on T-CON. The STV1 and STV2 signals are in the form of extremely short "pins" and have a voltage of about 4mv on the meter. I do not know if the main panel is waiting for a response from the logic if there is an image and only then is trying to highlight it. Voltage on the power supply all in the standard.
T-CON -> LSF460HJ02 (BN41-02069)

Hello. Does the main processor under the heat sink get slightly warm after a short while?

This is a new model under the 4k UHD matrix
- CY-HF460CSLV1V matrix,
T-con LSF460HJ02, BN41-01939B - BN95-00861A
e.g.: UE46F6400, 46F6500 (CY-GF460CSLV1V (S-PVA) + string Lumens D2GE-460SCA-R3
* CY-HF460CSLV1V


CPU / MCU: SDP1203 / timing ctrl
dc / dc SM4152
gamma controler RT6503A

Nobody knows what's going on yet ?!
(' ') Read Link

___________________
CY-KF550DSLV1V models 55 "series F8000
CY-SF550DSLV2V models 55 "F7000
CY-HF400CSLV1H models 40 "F6400
CY-GF460CSLV1V
CY-GF400CSLV1V
?Y-HF400CSLV3V> T-CON LSF400HJ01 BN41-01939B> PSU: L42X1Q_DHS BN44-00622B

Read Link_ Samsung LCD & OLED TV / FAQ_ / ???? 5_BG

Sling gently gets warm but as long as you are tired of it. Tv is trying to start all the time and gives it time to measure. Proceed normally starts the power supply, quarks all oscillate, as I said the backlight when disconnected from the main-lights up and shines without a problem to turn off the power supply when the process enters again in st-by. Today I will take a photo of stv and cpv runs and I will throw it here.

The T-con has to come + 12V and 3.3V.
As for T-Con: SM4152 = RT6905 / * as for the dc-dc workflow

Quote:

Panel CY-HF400CSLV2H.
Right strap F27158D3C0KMG (2432 eeprom is installed)
The left strap F27157C3C0J4Y

_______________
T-con: LSJ320HN03-S (BN41-01797A)
based on: LPFC041T0A-01, I7939A, SM4152
Matrix: LTJ320HN07-L

The voltages from maina are. As I remember correctly, it's 13V and as you say 3.3V. The problem is that all the basic voltages are, and I stuck to this STV signal because it looks strange and I do not know how it should be.

These are the correct values
P_DIM = 3,9v
BLU_ON = 4,92V

Col. you wrote

Quote:

After unplugging the BLU on / off from the connector on the power supply board, the backlight gets up without any problem

Explain it?

_______________________
T-CON: LSJ400HM06-S pcb: BN41-01797A
SM4152 DA1215
I7939A
4128BWP
(IC) Ctrl LPFC041T0A-Q1

T-con LSJ400HM06-s (FHD_60HZ_V03 / bn41-1797A) below voltage for 40 "matrix LTJ400HM08-L / * on SM4152

Quote:

HAVDD_8.9V = 8.9V
VOFFE_12V = - 12V / * with minus
VONE_28V = 30V
HAVDDR_8.8V = 8.9V
VSS_7.5V = - 7.3V / * with a downside
AVDD = 17.7V
VCS1 = VCS2 = FB_L = 6.1V
INB- = 6V
OUTB = 5.5V
INA- = 6.1V
OUTA = 6.6V

There he was usually guilty of Ctrl./*czyli T-con

Quote:

These are valid values
P_DIM = 3,9v
BLU_ON = 4,92V

Col. you wrote
Quotation:
After unplugging the BLU on / off from the connector on the power supply board, the backlight gets up without any problems

Explain it?

Blu it normally has 0.2V. Removing this pin from the connector going to the main causes the backlight to turn on and then it has a value of 2.9V, in order:
PWM DIM1 = 1.02V
PWM DIM2 = 0.85V
PWM DIM3 = 0.85V
PWM DIM4 = 1.23V
The release causes ignition because in the main this signal is shorted to the mass of the transistor at the moment of the absence of the matrix ignition signal.

I will try to measure the tension soon, although probably there is a problem because probably not all are described, because I know that I could not find something there.

STV signal



STV signal


CPV SIGNAL

In these new T-con should be Led, whose lighting "talks about the state of T-con"

e.g. SAMSUNG UE40F6100AK 40 "LED TV
T-CON Board BN41-01939B - BN97-06996A Link
* has two LEDs and three controls DC / DC operation SM4152

They are ledy. All 3 lights up when you try to start the TV. As for the tension:
HAVDD = 8.4V
VOFFE = -11,6V
VONE = 30V
HAVDD = 8.4V
VSS_7.5V = - 8.3 V
AVDD = 17V
VCS1 = VCS2 = 6.1V

The rest as I wrote is not described, but I find another description in similar values.
What you can see SDP1209 becomes quite fast and clearly "warm", even very.
I have found the voltage which after supplying the T-CON appears with the T-CON READY - 3.3V (3.24V) appears there. In general, it seems to me that the 3.3V branch is quite heavily loaded, even if I raise it from an external source, it always lacks it to a full 3.3V, normally it is 3.26V.
I also substituted the main memory for sure. Generally reading the forum of foreign colleagues including link from col. Lisek I am thinking about damaged SDP1209.

Look at the Main DC-DC converter giving power, maybe 1.1V per processor.

I just checked it out there. I have there 1.1V, 1.2V, 1.5V, 1.8V, 3.3V, 5V, 12V.

I do not know what else I can look for.

hi! elec

has you trying to short-circuit the EEPROM pin 5 and 6

Hey.
I did not try. Only it took off from the main
Epprom -> ATMLH 404 2EC L Y