Samsung UE50H6200AYXZT spento решено

[amennone]

A warm greeting to all. On this tvc samsung UE50H6200AYXZT (Chassis: U8DC) I found exploded IC206 = Z3015PI. The TVC was completely turned off. With the replacement of this component the situation remained unchanged. On pin 2 (VIN) of IC 206 the standby voltage is present about 9 volts, while in output pin 8 (VOUT) no voltage, there should be 5 volts.

I injected a voltage of 5 volts on pin 8, but the TV still shows no signs of life. All the power supplies are missing.

The main board is signed BN41-02156A, in vain the searches on the web of the same scheme.

Apart from the main layout, I need some input to continue with the repair, thanks for the safe and valuable advice.

[artur008]

.

[amennone]

Hello artur008,  and thanks for the reply .
Do you have the complete main board layout?

[amennone]

I have no doubt that LX has not been paid.
So the voltage from LX?

[artur008]

I injected a voltage of 5 volts on pin 8, but the TV still shows no signs of life. All the power supplies are missing.

---------------------------------------------------------------------------
What is your native language?

[amennone]

Thanks to the indications of artur008 I identified the faulty component
D204, replaced with zener 4v7.
The TV works, the tensions are right.
The problem is the image, the screen is dark, audio ok.
From the scart output the image is ok.
The panel looks unlit.
If I disconnect the cable from the T-CON (INNOLUX V650HP1-CPS1) to the main-board the panel is bright.
On the T-CON board, the diode D407 is off, D405 and D406 are on.
What could be the problem ?
D407 must be on?
What can I check?
Thank you and good job to everybody .

[artur008]

"Matrix: BN41-02156A" 

[amennone]

What do you mean ?
I tried disconnecting the cables where you put the "X", but the panel remains off

[artur008]

Does the screen light up?

[amennone]

Yes, the screen turns on, if the cable from the T-con to the main board is disconnected.

[artur008]

If you disconnect the connectors that I indicated in the figure, the screen backlight lights up?

[amennone]

No

[artur008]

VGL, VGH, VAA, VDD, V12V, VD33V, B1_5V_PW, B12V_PW, B3_3V_PW, B2_5V_PW?

[amennone]

Where should I check these tensions?

[serg-161]

Where should I check these tensions?

T-con

[amennone]

VGL       =  -7v8
VGH       =   0v
VAA       =   0v
VDD       =   Not identified on the T-CON circuit
V12V       =   12v   
VD33V       =   3v2
B1_5V_PW  =   1v5
B12V_PW   =   12v
B3_3V_PW  =   3v3
B2_5V_PW  =   2v5

others on T-CON

B1_1V_pw  =   1v1
PWRON     =    0v
VDDAM_L   =   0v
VREF1     =      0V
VGHP      =      0V
VGOFF     =     0v
XAO       =      3v2

thank you for your attention and best regards   

[amennone]

Привет, я сделал, как вы сказали, несколько раз прогрел процессор, ситуация осталась прежней.
Я подал напряжение 3 на 3 на PWRON, светодиод D407 загорелся, но дисплей не дает изображения, и панель продолжает оставаться темной.
Вот ситуация:

PWRON с внешним напряжением 3v3

VGL = -7v8 -7v8

VGH = 0v 0v

VAA = 0 В 17 В

V12V = 12v 12v

VD33V = 3х2 3х2

B1_5V_PW = 1 на 5 1 на 5

B12V_PW = 12 В 12 В

B3_3V_PW = 3v3 3v3

B2_5V_PW = 2 на 5 2 на 5

B1_1V_pw = 1v1 1v1

PWRON = 0 В с внешним напряжением 3 В 3

VDDAM_L = 0 В 8 В

VREF1 = 0V 1v3

VGHP = 0 В 29 В

VGOFF = 0v 0v

XAO = 3х2 3х2

VCM_CF = 0 7v2

VDD = 3х2 3х2

На данный момент все, что остается, это заказать новый T-CON, надеясь, что дисплей в порядке.
Любые другие предложения?