Samsung UE55MU6199 TV

[forere]

Can anyone advise me what the issue could be.
I have a Samsung UE55MU6199 TV. For some reason, it does not seem to boot up normal.

It gets stuck on one menu and does not move to the next.

Acting like a software issue, it does not allow me to go to the next, or sometimes, i press several times, and it does not show up and when it does, it sticks on one menu.

I cannot update the firmware because it sometimes does not show me the menu.

Not sure if this is a software issue or motherboard. it Boots up with Samsung log, but sticks afterwards and i have to press several times sometimes to get to the menu.

[JAMES4578]

HI @forere  can you try a soft Reset, hold the power Button on the Smart remote for around 5 seconds until the Samsung logo appears.  If this does not make much difference try unplugging from the mains  around 5 minutes.  know you have difficulty accessing menu  but are you able to update via USB if do not have the 1310.1 update https://www.samsung.com/uk/support/model/UE55MU6199UXZG/  

See some more information here https://www.samsung.com//support/answer/ANS00062957/#:~:text=Discharging%20or%20cold%20booting%20you... 

[forere]

No, it does not work.....it doesn't matter how i try to update, i get the message "Update Failed". I also noticed, it does not save any setting like Network settings.

I connect a LAN cable, after saying connect, and later it says no network connection when i try to do "Update Now"

I think the Motherboard is bad.