On my 36XS955 I have been noticing a yellowish-greenish cast to dark colors on HD broadcasts. Then, having meticulously set up my black level on other inputs, I noticed that the off-black on HD was distinctly green! When programs faded to black, it wasn’t black. Is it the TV or the broadcast?
So I tuned to a non-station in digital mode, a nonexistant ch 5.1. Now there’s no signal, but there is a background (increase Brightness slightly) — and it wasn’t black, but green.
I figured the color decoder for 1080i was doing this. Maybe there is a setting for dialing it in so it’s correct. And there is!
In service-code group 2170P-1, use #2-4, YOF, CBOF, and CROF. That’s luminance (or black) offset, blue offset, and red offset. Neutral (no effect) value is 31. Mine were around 44 to start with. YOF is 7 for no effect; mine was 10.
I cranked CBOF and CROF up to the vicinity of 52, and the background is now perfectly black! Your mileage may vary, of course, but take a look at the HD blacks on your set. Am I the only one with this problem?
(Those three codes have columns in the table for various inputs and video modes. When you adjust it for HD broadcasts, your other settings aren’t affected.)
On 2005-04-04 13:35, ecreaden wrote: Curious how you got into the service menu? Do you have a service manual you can email my way?
Please check out my previous posted articles entitled "Decoding the Service Codes," a series in this forum. There are references there to several sources for important charts and bits of service-code information.
The entire manual, BTW, is ~24MB and includes tons of schematics, block diagrams, and parts lists. Remarkably little describing the service codes -- just charts showing the essential relationships among them and the various TV modes and inputs, with default values for certain TVs. (The chart structures are common to *many* current models, however.)
I just now copied the first URL and pasted it into my Firefox browser's address line. I was asked if I wanted to save to disk, and I said yes. An instant later the .zip file appeared in my download directory. I unzipped it, and there were the three files I originally posted.
I don't know how to help -- except that a bit later today I can locate tthe original messages, and point you to those. They will have hot-buttons for the downloads. On my Mac it downloads so fast that I never get a progress dialog, and it looks like nothing happened. But the file's there.
Got 'em. It was apparently an Internet Explorer issue, because my Firefox also did just fine.
OK, now that I have this stuff and am contemplating tinkering, quick myth versus reality question --
I had a tech out to adjust some convergence issues on my 36XS955 that I identified using Video Essentials. He told me that if I entered the service menu at any time, that I void my Sony warranty. I've seen various posts on this forum indicating that to be true as well. What is your take on that?
On 2005-04-05 16:41, ecreaden wrote: Got 'em. It was apparently an Internet Explorer issue, because my Firefox also did just fine.
OK, now that I have this stuff and am contemplating tinkering, quick myth versus reality question --
I had a tech out to adjust some convergence issues on my 36XS955 that I identified using Video Essentials. He told me that if I entered the service menu at any time, that I void my Sony warranty. I've seen various posts on this forum indicating that to be true as well. What is your take on that?
Thanks!
E
I recall that federal law stepped in years ago and said, in effect, you can't use just any excuse to deny a buyer due warranty. If a device is sealed with a labeled sticker that can be torn, maybe. Otherwise the manufacturer has to prove you have *caused* damage for which you are now claiming warranty repair.
Of course a service tech may tell you the Big Lie; means you are kept helpless, and they earn more income. Nope. Within the law, you are in control. I've been through this with certain computers, too.
Bottom line: No one can *prove* you entered service mode, or prove you removed the back from the set unless you have broken an appropriately-labeled seal. But if you damage something while in there, don't expect warranty repair.
I have transformed the quality of my 36XS955's display by having my way with service mode, and it was well worth the risk, if any! But create you own insurance: go through the tedium of writing doen the original settings as you tinker, and I would also log your changes in a little notebook. Has helped me back away from a few bungles!
----------------- KenTech
[ This message was edited by: kentech on 2005-04-06 14:09 ]
[ This message was edited by: kentech on 2005-04-06 14:11 ]
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Posted: 2005-03-30 19:51
