Re: TCL 55p1us turns ON with sound and black screen
The video is very good.
Do i need to test for continuity between the pins of each connector (1-1, 2-2 ...) ?...
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Re: TCL 55p1us turns ON with sound and black screen
After several tests, the second half is still darker and all the screen becomes worse with time.
I did some additional voltage tests:
TCON:
- VGH 20V
PANEL:
1- L 13.7 mv
2- R 3.87 V
3- DOT_C 2.99 V
4- VDD33 3.3 V
5- CKV 1.46 V
6- STVR 11.4 mv
7- OE 3.28 V
8- STV 12.5 mv
9- SPI DCK 9.7 mv
10- SPI DI 9.8 mv
11- SPI HOLD 3.27 V
12- Spi VDD 3.30 V
...
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Re: TCL 55p1us turns ON with sound and black screen
After some trials with the tape, i got the second half to work but the image is darker than the other half.
I will try now to cover less lines.
What can i test on the panel to track down the problem ? capacitors seems good.Last edited by deep000; 07-21-2021, 05:03 PM.
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Re: TCL 55p1us turns ON with sound and black screen
I didn't find any short on the capacitors (continuity only in one side).
When i add a tape to a part of the ribbon cable, half of the screen works but no image in the other one (where there is the problem).
Ref of the panel: ST5461D04-1-XL-3
thanks for your help....Last edited by deep000; 07-21-2021, 10:15 AM.
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Re: TCL 55p1us turns ON with sound and black screen
Thank you for your replies !
How did you know that the problem comes from the panel and not the t-con ?
I will try to test them, i read that i must unsoldered them to do it (Flux + heat).
What worries me is how to resolder, i have 0 idea how to solder such tiny component.
Can you explain more....
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TCL 55p1us turns ON with sound and black screen
Hi all,
I am a newbie, i am taking this opportunity (the breakdown of my TV) to learn electronics.
I was watching the tv, and the colors became weired, i turned off/on the screen => black screen as result (sound/backlight working).
TV: TCL 55p1us
T-CON: st5461d04-1-c-7
I did some voltage tests, here is the result:
[code]
1 - VIN 12 12V
2 - VGH between -150 mv and -0.47V (negative ??)
3 - VGL between -150mv and -0.47V (same value as VGH ??)
There is a continuity between VGH and...
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