Techs will never go there as one wrong move and the TV could be bricked. Please don't take this wrong but if you want to get hung up on, push on service menu support.
OK, with that out of the way some of those items sound like items you can use the Seriver Issues post in this forum. I'd do that next.
An update for my new Samsung UN55-F6300AFXZA came thru on 10/9/2014 changing the software from 2203 to 2203.1. I had no problems with the TV until the update. The update messed up the color, the service menu settings, etc. on my new Samsung UN55F6300AF I just purchased in March 2014. Samsung sent a Certified Service Tech out and he could not access the service menu nor did he know the default settings for the service menu. Samsung replaced the MAIN PCB ASSAY BOARD but this didn't fix the problem. List of what the 2203.1 update messed up:
*Standard picture Setting- white looks light pink. Adjusting white balance etc does not get rid of it.
*Movie picture Setting- white looks purple. Adjusting does not help here either.
*Picture Option- unable to adjust HDMI BLACK LEVEL
*TWC DVR- update changed the settings on DVR. Had to do DVR reset.
*HDMI PLUG IN PORTS- some ports are no longer recognized and will not work.
*BLU-RAY PLAYER-messed it up. Has to be replaced and it was a Samsung.
*TIME-will not allow me to change the DST, Time zone.
Samsung's e-Remote and advanced tech support(which is a joke) could not fix it nor access the service menu to see what had happened.
Has anyone else had this happen?
I tried to find the default service menu settings online with no success and Samsung acts like it is some Top Secret government cover up.
I've called Samsung's Support Center. Here is a list of what I encountered:
1) The techs; e-remote have no clue what they are doing and refuse to verify if the service menu settings are accurate. Hung up on me 3 times.
2) ERC can do nothing except document your TV got messed up by the update.
3) Most of the Samsung Customer Support department personnel are rude, ill trained, don't have a clue about fixing a TV, evasive, send you to another department that can't do anything either, and try to delay repairs under the warranty in hopes you will give up until the warranty expires.
I've purchased 3 Samsung products (2 in 2014) all of which were corrupted by Samsung updates.
If anyone knows the factory default settings for the service menu on Samsung UN55-6300AFXZA please let me know. Samsung is not going to help so I guess it is up to me.