For starters, I had no idea where to put this so I made a go here.
If it's in the wrong section, please do move it.
Let's get to it then.
How to access the Extended Service Menu for Samsung TV's.
It's taken me a few hours to access the extended service menu just because of lacking Android apps for configurable IR Remotes. I have however efter much digging found one that works, link is provided below.
The app that I used is "Smart IR Remote AnyMote" and to my knowledge it should work with any
android phone.
Download it here: http://speedy.sh/EXpS4/Smart-IR-Remote- ... -2.2.0.apk and just install the APK on your android phone.
I have also taken the time to configure the IR remote, which should work for
most models (NO GUARANTEE). You can download it here: http://colortiger.com/shared/r/rHKfi
The configured remote contains both the Factory button and the 3Speed button.
1. Download and install the APP.
2. Download and load the IR Remote, have it ready.
3. Place your TV in standby (shut it off) and press the combo: INFO, MENU, MUTE, POWER on your remote control to enter the Service Menu.
4. Open up Smart IR Remote and first press on Factory, then 3Speed.
I am warning you though, don't mess around in the service menu if you don't know what you're doing. I will not take any responsibility for what you do with this information.

All the best!
/Zabatsu