Originally Posted by Rudy1
Wouldn't it be possible to "change" the unit back to its original model designation (that is, a D550) after you've made the desired changes in the advanced calibration menu? Would the new settings stick? Would the HDMI ports revert to their original configuration? Just wondering...I haven't a clue about these technical matters.
Yes, you can change it back to D550. If you change it back to D550 all the hdmi ports work as they did from the factory. All the calibration settings revert to factory.
Originally Posted by Bobdlux
I think I read that every time you go into the service menu it resets all your custom settings. You'd be back at square one. Someone feel free to correct me if I'm wrong.
You are correct. Every time I have been in the Service Menu all my calibration settings revert to factory default.
Originally Posted by Blwn281
You can do a factory reset on your tv from the service menu and that will bring it completely back to normal.
This is not 100% true. There are some settings in the Service Menu that do not revert to factory when you do a factory reset.
For example: I stupidly hit the HDMI calibration under ADC/WB. It messed up my color and contrast pretty bad and it said failure next to HDMI calibration. Factory Reset did nothing to fix it. I found the settings it changed and reverted it to the the original by looking at the pictures here.
I finally was able to fix it 100% by displaying the correct 8x8 checker board pattern on my PS3 while connected to HDMI 1 and running the HDMI calibration again. Finally it said success again next to HDMI calibration.
Also the Expert Mode Setting for the extra CAL Day and CAL Night picture modes is persistant even when you factory reset.
Factory reset also resets how many hours you have on your panel. I had over 300 hours when I did it and it reset to hours.