I resolved the issue by lowering the backlight setting that is added in the firmware update version from August 28, 2013. However, Seiki's directions on that download page are incorrect, instead, this is how you may update the firmware:
- Download the .zip file and extract the
install.img file to a freshly formatted (FAT32) USB thumbdrive. (On a Mac, be sure the OS has not overzealously also expand the
install.img file too.)
- Put the thumb drive into USB port 1 (the port on the back, not the side of the monitor).
- Turn the TV on.
- On your remote control press the
- Then on your remote press
0 four times, that will take you into the service menu.
- In the service menu choose the software upgrade option.
- Screen will display upgrade animation.
- Wait for the upgrade to complete.
- Turn off the TV when finished.
- Disconnect the thumb drive.
Once updated, I now had the option to change the
backlight setting in the options menu which was previously invisibly set to 100% which is why I had needed to have 7%
brightness to get proper light levels. I updated the
backlight to now be 71% and after calibration found the
brightness only needed to be 42% and with that the display looks vastly superior and actually has proper colors after calibration using the Spyder4Pro.
To fix the halo effect I was seeing, I had to lower the
sharpness that defaulted to 100% down to 0% and with that change, the halo effect is now completely gone.
Note that the firmware upgrade also fixed the flakiness of the monitor not reliably syncing with the HDMI signal coming from the laptop as evidenced by it displaying the
Not Support error message and having to disconnect and reconnect several times before it would finally sync.
All in all, I am very happy with the monitor after the firmware upgrade, as it was very inexpensive and for the price offers what I consider to be very adequate color reproduction to meet my needs. The Spyder4Pro report states it gives 100% of sRGB and 77% of adobeRGB with a contrast ratio of 2120 to 1. Here is the not very good Tone response report relative to gamma 1.8 or 2.2: