Panasonic TX-P50VT30E 7 blinks, change SC board and 8 blinks

[Chuspc]

Hello,
This is my first thread, i am spanish people.
I have various tech guides and i follow the procediment to repair.

I have a Panasonic TX-P50VT30E (2011 model), i have 7 blinks. I test the mosfet transistor in SC board and i get a bad result.

I think change the mosfet transistors but finally i find a new board.
In this new SC board the mosfet are ok.
I change the old SC board for new board, but now when i power on TV i have 8 blinks.

Any recomendation and test for get a solution?
The problem is SD/SU, SS or A board? I read differents solutions in other threads.

Thanks.

[tvtimmy]

Re: Panasonic TX-P50VT30E 7 blinks, change SC board and 8 blinks

Post pictures of your sc a d ss boards.

[Chuspc]

Re: Panasonic TX-P50VT30E 7 blinks, change SC board and 8 blinks

Hello
I add photos
The SC board you can see mount in TV is a new, MOSFET ok
The SC board yo can ser unmount os poder, MOSFET not correct
I check MOSFET with multimeter.
Thanks for your help

[tvtimmy]

Re: Panasonic TX-P50VT30E 7 blinks, change SC board and 8 blinks

Check these 2 components on the SS board.

[Chuspc]

Re: Panasonic TX-P50VT30E 7 blinks, change SC board and 8 blinks

There are ok
No short

[Chuspc]

Re: Panasonic TX-P50VT30E 7 blinks, change SC board and 8 blinks

Hi,
I have a good news.
We unmount SS Board and i power on the TV, The led is green and the display is black.
I unmount and clean all connections of SS Board and I mount again.
The TV is power on normally, it´s correct!!!

But now i have a vertical pink band in right part of display, i add photo.
I think is a bad connection, which board can generate this efect?

At this moment:

Firts, I have seven red blinks, I change SC Board.
Second, After change SC Board i have eight red blinks, i think my problem was conection into SS Board and panel. I clean the connections and i get a solution.
Third, I have a vertical pink band in right os display.

Thanks guys!!!

[Chuspc]

Re: Panasonic TX-P50VT30E 7 blinks, change SC board and 8 blinks

Edit last post for new information......

[Chuspc]

Re: Panasonic TX-P50VT30E 7 blinks, change SC board and 8 blinks

After 2/3 hours of use
I have 7 red links again.
The mosfet of SC and SS are ok

Any recomendation?

[Moreno83]

Re: Panasonic TX-P50VT30E 7 blinks, change SC board and 8 blinks

You need to remove the bufferboards and connect a jumper on the sc50 connector. It is located on the SC board. Turn on the tv with the jumper and without bufferboards and see if it stays on. If it gives one of these errors below then you know where to look.

7 blinks is SC , probably panel side.
6 Blinks is SC , DG301/DG302 or IC501
8 Blinks is SS

[RonAmer]

Re: Panasonic TX-P50VT30E 7 blinks, change SC board and 8 blinks

You need to remove the bufferboards and connect a jumper on the sc50 connector. It is located on the SC board. Turn on the tv with the jumper and without bufferboards and see if it stays on. If it gives one of these errors below then you know where to look.

7 blinks is SC , probably panel side.
6 Blinks is SC , DG301/DG302 or IC501
8 Blinks is SS

Hi Moreno ,

Our Plasma TX-P50VT30E is blinking green 8 times after power on sequence.
Do you have any suggestions?

regards, Ronald