I believe I have fixed the purple banding issue with my Samsung! Note this works for my 58 inch because that is the only USB file currently available.
Read over the "service bulletin"
I needed the previous post to get the USB file on a stick found here:
Originally Posted by BigMiggen
Well here you go. Samsung tech was just here and brought the firmware for pink banding on his usb drive. He forgot to create a folder as the service bulliten says so he had me do it while he was playing in the service menus. When he wasn't looking I copied the file. it is the 3d 58 inch firmware. I have a pn58c6500 and the 3d version does indeed work on my tv as stated in the service bulliten(although my tv isn't 3d). Sorry for all you guys with the 64 inchers. I only have the 58 inch 3d firmware. By the way, the firmware was enough, didn't need to adjust the voltage. Mine is 209.4v from the factory by yhe way.
This site wont let me attach a bin file so here is an external link to download it.
I believe you need a factory remote for the firmware update but here it is anyways.
Not able to post link. It is a couple of posts back.
READ THIS: Make sure cross check the service bulletin for your model #. This is the [3D58]logic.bin version. Dont forget to create a folder on your usb drive and also rename the file according to the service bulliten.
Then I needed to add the hex code into my harmony remote using this:
Originally Posted by smpte
The hex code for the service IR code is:
0000 006D 0000 0022 00AC 00AB 0015 0041 0015 0041 0015 0041 0015 0016 0015 0016 0015 0016 0015 0016 0015 0016 0015 0041 0015 0041 0015 0041 0015 0016 0015 0016 0015 0016 0015 0016 0015 0016 0015 0016 0015 0016 0015 0041 0015 0041 0015 0041 0015 0041 0015 0016 0015 0016 0015 0041 0015 0041 0015 0016 0015 0016 0015 0016 0015 0016 0015 0041 0015 0041 0015 0689
Use the info button on the TV's remote and then hit the above service code.
Needless to say use this access at your own risk. Playing around in the service menu can do irreversible harm.
Instructions for applying hex code to Harmony remotes here: (But there are other ways with other remotes)
Plug your USB stick into your TV's USB.
Enter Factory mode by using the TV remote and while powered off hit - MUTE, 1, 8, 2, POWER.
The factory menu pops up.
Hit the programmed hex code on your Harmony (or other programmable remote)
Screen will flash some solid colors on the screen.
Hit the programmed hex code a second time to escape the color flashing screens.
When the Factory menu comes back you find that there are new submenus that were not there before.
Enter Control/PDP Option
Turn Logic Connect to ON.
Scroll down to Logic USB D/L and right arrow to upgrade.
When the upgrade is complete the TV will turn off.
Best of Luck