Let me start out by admitting that I'm a moron. With that out of the way, I'll go to the part where I beg calibration experts for advice.

I've got a Toshiba 42ZV650U LCD and decided, against all advice otherwise, that I wanted to play in the service menu (like I said, moron). I got in, flipped through a few settings and changed a few values before I figured out what was actually happening (HEX and all of that). I've got a better idea now as to what the settings do, but I think I changed one or two before writing them down. I'm pretty sure I didn't change any of them more than 2-3 notches.

Now it seems that skin tones have a orange tint, though it's not all skin tones (just some). I'm pretty certain that the CUTs are all 00H from the factory, so it doesn't look like I changed any of those. Could the DRVs cause orange tint? Can changes of a few notches have a dramatic effect? Are BRTC, COLC, UVTT, and CNTX just used for geometry? Finally, what do the OPTs mean?

Here are all of the service menu settings on my TV:
RCUT, GCUT, BCUT
RDRV, GDRV, BDRV
BRTC, COLC, UVTT, CNTX
OPT1, OPT2, OPT3, OPT4, OPT5
SETID

I know I'm an idiot, so feel free to tell me so. thanks in advance for any help you can offer - I will no doubt be in your debt.

Let me start out by admitting that I'm a moron. With that out of the way, I'll go to the part where I beg calibration experts for advice.

I've got a Toshiba 42ZV650U LCD and decided, against all advice otherwise, that I wanted to play in the service menu (like I said, moron). I got in, flipped through a few settings and changed a few values before I figured out what was actually happening (HEX and all of that). I've got a better idea now as to what the settings do, but I think I changed one or two before writing them down. I'm pretty sure I didn't change any of them more than 2-3 notches.

Now it seems that skin tones have a orange tint, though it's not all skin tones (just some). I'm pretty certain that the CUTs are all 00H from the factory, so it doesn't look like I changed any of those. Could the DRVs cause orange tint? Can changes of a few notches have a dramatic effect? Are BRTC, COLC, UVTT, and CNTX just used for geometry? Finally, what do the OPTs mean?

Here are all of the service menu settings on my TV:
RCUT, GCUT, BCUT
RDRV, GDRV, BDRV
BRTC, COLC, UVTT, CNTX
OPT1, OPT2, OPT3, OPT4, OPT5
SETID

I know I'm an idiot, so feel free to tell me so. thanks in advance for any help you can offer - I will no doubt be in your debt.
The DRVs are the white balance adjustments and will have an impact on fleshtones only when changed fairly drastically. I doubt a few clicks would cause much of that effect. If you have a test DVD, try looking at a grayscale ramp and see if it has an obvious tint. On the off chance that the gray ramps look yellow, you've found the problem and you need to raise BDRV. If they do not, it's probably a color or tint issue.
There are no geometry adjustments on LCD sets. The BRTC is a brightness adjustment, and it usually works. The COLC would be a color adjustment, but it does not always work. Same with the CNTX. I believe UVTT is a tint adjustment, but I don't think it usually works. I don't know what the OPT controls do. Toshiba service menus are not very thorough or easy to work with, and some controls strangely don't work.

greetings

To determine if you have a grayscale issue ... put up a grayscale ramp pattern from a test disc ... free or otherwise ... and look at it. Does the dark end look black and white to you?

Look at the bright end now ... same approach ...

regards

http://www.avsforum.com/avs-vb/showthread.php?t=1012562

different model may have different nuances, but here's the gist.

Thanks so much, Chad, Michael, and sotti. I will take a look at it soon and report back. Chad, I've seen your work in the Panasonic G10 thread, and Michael, you're clearly a pro's pro - I'm honored that all three of you would take time for a prole like me.

Greetings

Additional ...

BRTC ... C stands for center. As in a range of 0 to 100 and 50 being center.

Colc ... Center again

CNTX ... X as in maXimum ... Establishing where 100 actually is in the user menu.

regards

sotti, I haven't gotten a chance to go through the entire post you linked yet, but it looks like you did an immense amount of work putting together all of that great information. Maybe if I'm brave enough someday I'll actually try to put it to use.

Chad, it looks like you were absolutely right on the Blue Drive. Another owner of the same TV had
(surprisingly) identical settings on his from the factory except for a higher BDRV, which must have been what I accidentally flipped, and SETID, which was one tick off (81H vs. 80H). Skin tones look much more natural now, but does anyone happen to know what SETID might mean? Thanks again everyone for your help.

My guess is that it is some model or chassis code that selects processing defaults for a particular combination of component parts and/or firmware. Many manufacturers have used the same parts in many models and had ID codes in the service menu that have to be set correctly for a given combination. It could relate to a feature set or, for instance, a different panel source. The only way to know for sure is to check with Toshiba or search their training and service manuals. You might not find the answer then, as much of this sort of detail is not well documented and tech support usually focuses on just swapping the right boards to make the sets show a picture.