EU55JS9000T black screen and sound good

[totof]

Re: EU55JS9000T black screen and sound good

Here I found dump OC eprom and spi from "48". Try it, maybe you'll get lucky.

I just tried with these binaries but it's no better, I don't even have the sound from the TV anymore.
Thanks anyway

[lotas]

Re: EU55JS9000T black screen and sound good

This can happen if their software version is different, that is, spi flash, eeprom and eMMC must be the same version, if correctly, then the entire set must be flashed, including eMMC.

[totof]

Re: EU55JS9000T black screen and sound good

Okay but I don't know how to flash eMMC. Never do that :-)

[lotas]

Re: EU55JS9000T black screen and sound good

To do this, you need an eMMC programmer and know how to connect it, solder it via ISP and program it correctly, and if the eMMC chip is already dead, then replace it with a new one....

[totof]

Re: EU55JS9000T black screen and sound good

To do this, you need an eMMC programmer and know how to connect it, solder it via ISP and program it correctly, and if the eMMC chip is already dead, then replace it with a new one....

I don't have the equipment to do this.

the best thing you can do is to connect a pc to the debug port and see the log, other than this you can try to access service menu through debug port and do a service reset..

Yes it's a good idea but I haven't found any information on how to do this. I would like more details on the procedure for doing this.

[totof]

Re: EU55JS9000T black screen and sound good

Hello.
I was finally able to find another OCB of the same reference for a TV with a broken panel but in fact the problem is exactly the same, the backlight turns off immediately after plugging in the OCB. So my diagnosis was wrong.

So, taking into account the tests that I had already carried out, do you think that it is the motherboard in the TV, the T-Con card, the backlight control card, the power supply card ?

What a gas plant this TV design ;-(

[nomoresonys]

So did you get to try a different cable? this new layout doesn't make things easier, we all look alike now, do I have to pick an avatar like some stupid game or sum shit or what?

[totof]

Yes, I tried with 2 different cables

[totof]

Problem solved. It was the motherboard in the TV that was broken, I replaced it with another.
Thanks to everyone who tried to help me :-)