Originally Posted by mgmustang1
so i tried everything i could so far. the resolution has to be set on 1080p:24hz setting or tv gets no signal. so this looks like it rules out the denon completely and now is something with the tv and combatabilty with the denon. correct? the way i found this out is in the denon manual. when i play a game i dont see jagged edges but its not as smooth as it should be. can someone tell me what 1080p;24hz means?
I probably should give you three answers to your question of 'what 1080p:24hz means?'
Let start with the technical answer - Any time you see Hz, that is an abrievation for Hertz. Mr. Hertz's name is used to indicate cycles per second. In terms of video that means the number of video refreshes per second. In the old standard definition days, half of the screen (alternating lines) would be updated at 1/60th of a second in the U.S. since that was the frequency used in your house's AC power. In Europe it was 50Hz since the AC power freqency is 50 times a second (50Hz). High Definition has the ability to update a full screen at 60Hz. Movie projectors have almost always shown frames of the motion picture at 24Hz, since the early projectors couldn't spool film any faster.
For Blu-Ray, a standard was adopted that allows a Blu-Ray disc to output frames at 24Hz to match the original motion picture update rate. That is what you are forcing by going to 1080p/24Hz. So any motion sports should look jumpy or unusual since you are essentially removing 36 of the 60 update frames you would normally get when watching TV. Not a good trade. 1080p means that there are 1,080 lines in the picture and the 'p' means 'progressive' so that all of the lines are updated with each refresh. So, that is answer 1.
Answer 2 is that it means you still either have a firmware issue, and the handshake is working at 24Hz, or you have bit errors because 1080p/24Hz uses less bits per second than 1080p/60 which is the refresh rate causing you the errors. So this really hasn't ruled anything out. If you want to rule out bit errors, take the TV (I know it can be tough to move the TV) closer to your Denon and connect with a 3 or 6' cable without any wall plugs or anything but the cable between the TV and the Denon. That would eliminate any bit errors. Pretty much any non-damaged 6' HDMI cable should be able to pass 1080p/60. Also remember to return any of the Denon settings to their default that you changed during previous troubleshooting (including 24Hz).
Answer 3 is the toughest because I don't want this to sound like anything but intended good advice. If you are asking what 1080p/24Hz is, then you don't have the knowledge necessary to debug a firmware problem. It's very much like opening the hood to a car and saying you'll troubleshoot the engine and then asking what does "cylinder" mean. Firmware errors are not easy for experienced engineers to debug since only the manufacturer has the data necessary to debug and they don't share that data. It also ususally involves bus snoopers (or computer equivalents) that can look at the signals and attempt to determine if the correct bits are being sent out by the TV to the AVR and then to the source components.
If it were me, I'd try the bit error test in answer #2. If that works out, then it's likely a firmware problem. At that point if there is a way to take this LG model back to the store and get a different model (even a significantly different LG model), I'd do that. If you can't take the TV back, then you're going to have to convince LG they have a problem (good luck). In my experience, if you haven't bypassed a firmware problem in a day, it isn't possible to bypass it - it needs reprogramming.
I hope it turns out to be bit errors, since at least that is fixable. But, without a lot of learning and luck, I don't think you're going to be able to do anything with a firmware issue. Sorry to be more blunt about this than I'd like to be.Edited by alk3997 - 1/30/13 at 7:49am