Samsung UE50TU8070UXZT bootloop display problem

[fanaticgames]

Hi guys I have a problem with this TV, once it is turned on it restarts continuously (only the backlight is present, no image), by disconnecting the flat of the display it remains on regularly, can I solve it with scotch tape? What slopes of the flat can I cover?

[nomoresonys]

Re: Samsung UE50TU8070UXZT bootloop display problem

https://www.youtube.com/watch?v=pfrRhw7-ZII

[fanaticgames]

Re: Samsung UE50TU8070UXZT bootloop display problem

https://www.youtube.com/watch?v=pfrRhw7-ZII

yes but I can't find the tracks of the clock signal

[howardc64]

Re: Samsung UE50TU8070UXZT bootloop display problem

yes but I can't find the tracks of the clock signal

Posted a slide summary on Samsung 4K panel connections. Can help you understand what all the flex connection pins are

https://www.badcaps.net/forum/showthread.php?t=118541

[fanaticgames]

Re: Samsung UE50TU8070UXZT bootloop display problem

Posted a slide summary on Samsung 4K panel connections. Can help you understand what all the flex connection pins are

https://www.badcaps.net/forum/showthread.php?t=118541

the problem is only on the right cof, isolating 1 ckv signal you get an image but not acceptable, unfortunately the panel has to be thrown away, samsung rubbish

[fanaticgames]

Re: Samsung UE50TU8070UXZT bootloop display problem

With scotch tape, I think the lines next to it didn't make contact, I cut the pcb directly on the ckv signals of the right cof and I got an excellent result, there is only a thin line that comes out intermittently every 10 seconds

[howardc64]

Re: Samsung UE50TU8070UXZT bootloop display problem

With scotch tape, I think the lines next to it didn't make contact, I cut the pcb directly on the ckv signals of the right cof and I got an excellent result, there is only a thin line that comes out intermittently every 10 seconds

This document explains fixing CKV lines on slightly older Samsung TVs. It talks about strap CKV* and CKVB* pairs after disconnecting from the panel. Also possible connect them to GND or VOFF. This is more advanced than I understand. Just FYI

https://www.electronica-pt.com/esque...-repair-65862/

This video explains CKV* and CKVB* (B=Bar or inverted signal) are generated from the same source. I guess above author is expecting a fault before CKV/CKVB pair is generated. However, for these newer Samsung Panels, CVK/CKVB comes directly out of the single SOC on main so maybe no longer fault in pairs... I don't really know.

https://youtu.be/izd7dhtmZjc?t=879