CurtPalme.com Home Theater Forum

dbaisey · Posted: Sun Mar 23, 2008 10:02 pm Post subject:

Yes I know but did you check with the previous owner and run those signals checking for problems before doing anything?

Was there a 1080I signal in it already or did you do a new signal entry from temporary or was it from default? Doug

dropzone7 · Joined: 12 Jun 2007 Posts: 1069 Location: Charlotte, NC

dbaisey · Posted: Sun Mar 23, 2008 10:46 pm Post subject:

Drop,
TRAN235 was most likely the default. Line 68 is most likely a factory entry that it will hit on if it misses in the entry list.

Check the info menu and see if the signal properties are sep for separate sync or if it says comp for combined sync H/V. If your using a 5 wire feed it should say sep. Maybe that is the problem. You shouldn't save to default until everything is verified working and perfect for a few days.

When changing the 'default' or 'last' initial data select settings you need to wait 10 minutes before it will take the new setting. I wouldnt do to much other then trying to get back to where it was before you made the signal entry and changes then go over the signal properties to make sure they are correct. If they are then try using 'last' instead of default. Shut off auto data store and direct entry access.

See if the last owner had a five wire or four wire cable. Doug

MikeEby · Joined: 24 Jun 2007 Posts: 5237 Location: Osceola, Indiana

I would try just a plain video composite video signal from a vcr, or dvd player. Short cable dangling down from the projector, it will look like sh*t but it will tell you if you have a source problem, its probably not, but worth a try. You have a lot stuff in the signal path. Try to isolated the problem.

Edit: Ahh listen to Doug...He the man!

Mike

dropzone7 · Joined: 12 Jun 2007 Posts: 1069 Location: Charlotte, NC

Good info here guys. Problem is that I can't even see a menu to make any changes or check info. Maybe I will try S-Video as you said Mike and try to get a visible menu. Then I can verify settings as Doug has explained. In answer to your question about the cable, I'm using a 5-wire feed and the previous user was as well. Yellow "H" and White "V".

dbaisey · Posted: Mon Mar 24, 2008 12:58 am Post subject:

Try 480P, 720p or even video. The IMMS freq blocks are listed here. http://www.curtpalme.com/NECXG_IMMS_Frequencies.shtm

Are you sure your on the RGB input still and didnt have video selected instead of RGB at the signal entry? BTW: Sync colors are not standard so it has to match the source H and V output then at the projectors input. Doug

dropzone7 · Joined: 12 Jun 2007 Posts: 1069 Location: Charlotte, NC

Weird, I just hooked up an old Sony DVD player by S-Video and it synced up and said the signal was PAL. Looked have decent except for vertical lines in the picture. I can see the menus now so I went through and checked settings for the inputs I had working yesterday. I did change a few things there and right now it will sync to any input I enter in the list like #3 which is "TRAN235" and that #68 that it wanted to sync to for some reason. It is letting me make changed in the "info" menus for the inputs which it would not do before. I would hit STORE and only have option of NEW or CANCEL, not CURRENT. It's like it was a new signal every time it synced to anything. I have a feeling that it will happen again after I shut it down and try again tomorrow but right now it is working. What entries if any should I delete? Should I create a new entry right now and if so where should it go?

dbaisey · Posted: Mon Mar 24, 2008 2:19 am Post subject:

Dont change anything or delete memory locations. Do you have a video entry that is NTSC or just pal. On RGB what does sync say sep?

Elaine Benes · Joined: 25 Apr 2006 Posts: 1416

Hook your 1080i back up and see what happens. If you get it synched ok, make a new entry for it and use temporary for the initial data. Put it in as low a line as you have free.

dropzone7 · Joined: 12 Jun 2007 Posts: 1069 Location: Charlotte, NC

dbaisey · Posted: Mon Mar 24, 2008 3:59 am Post subject:

Its selecting pal because its the closest match on the input most likely but you wont be able to store to it.

Go into the default data menu area and see what it says is stored for block 2 and 3.

What does the signal entry list say for the first two entries at the top of the list. If pal or video what is the first RGB entry? Also check that you are in stand alone and not switch level one.

If your running 1080I most you can try to move the top RGB entry back in the input list to open the line then put the 1080I at the start of RGB. Make sure the entry is temporary and RGB is hi-lited. Once you get that set let it run over 10 minutes. Make sure the source lock is set to off on any of the entries.

Elaine is right but you want to check all the settings on how the entry is brought up. If your lost or unsure and you have the tube in the 1100 check those initial settings against the 852. Doug

Mark_A_W · Posted: Mon Mar 24, 2008 9:55 pm Post subject:

I think it might have a bad Oscillator board. I always think it's the oscillator board, but it does sound just like mine did, which had a bad oscillator board.

Unfortuneately I don't think the board from the 1100 will swap in.

dbaisey · Posted: Mon Mar 24, 2008 10:28 pm Post subject:

Im thinking the projector is saying ' What the heck kind of 480P is that?' ............Blue what?

dropzone7 · Joined: 12 Jun 2007 Posts: 1069 Location: Charlotte, NC

All kinds of things going on around here today so I did not get time to mess with it tonight. I checked boards in the 110 and the numbers are all different than those in the 852. Pity because that is a troubleshooting procedure I could handle. Those boards slide in and out very easily and the little diagram on the card cage makes it easy to tell where they go. Mark, if it is the oscillator board then that would be good news because I can find that much cheaper than a system board. Maybe tomorrow I will get back at it.

dropzone7 · Joined: 12 Jun 2007 Posts: 1069 Location: Charlotte, NC

Cranked up the projector late last night just out of curiosity. Luckily it quickly synced up to that line#68 RGB entry and ran for a solid hour before I shut it down. I tried switching sources through my receiver back and forth between HD Cable box and HD DVD player and the projector always picked the signal up right away. Hopefully I'm out of the woods but I'm not sure. Should I go in and delete any entries now or make a copy of this known working entry?

dbaisey · Posted: Tue Mar 25, 2008 2:48 pm Post subject:

If I was you I would not delete anything for awhile. If your still unsure how the memory works try things a little at a time so you can check your work each day.

TEMP: Do a 1080I test signal entry back behind the 68 line to make sure it grabs it. Check if it grabs line 68 or the new entry.
This is just a precaution, if it does then you should be ok to continue. If it grabs 68 try selecting the new entry via the input list and see if it locks on.

If your running 1080I open up a RGB entry line by moving a entry out of the way from the top of the RGB signals then put the new 1080I line in that spot. For now I guess you could do a data copy from 68 but later go back and do a fresh entry. Name the new line 1080I if that is what you are running. Don't forget to phase the new entry. Let it run on the new entry line for awhile before shutting down.

If for any reason it acts up you can move things back to where they were. I suggest this only because your having a few issues and you really need to run it and confirm normal operation with the signals you will be running. No need to be in a hurry to start deleting when you might be throwing away information that you may need to keep it stable.

Once you have it up and running check for stability and drift with the covers on, get to know the projector's personality for your configuration and room. Doug

dropzone7 · Joined: 12 Jun 2007 Posts: 1069 Location: Charlotte, NC

Okay, this is quickly going from fun hobby to pain in the ass. This thing is really flaky and I'm not sure why. Now I can't even get a stable 1080i source to lock on at all. I keep getting the "no signal" message and can only get an s-video signal to lock on and stabilize and that takes several tries and it still shows "no signal" even after it locks onto it. If anyone has an oscillator board for an XG852 I would be interested in trying it just to confirm if that is the problem. I'm really close to getting rid of all of these things and buying a plug and play digital which I really DONT want to do. It's just so frustrating. I thought the tube change was going to be a problem but that seems to have gone off without a hitch. I never expected to have signal issues or whatever this is. Thanks for all of the help guys, especially you Doug but this is either not fixable or is beyond my grasp of understanding. Probably the later.

Elaine Benes · Joined: 25 Apr 2006 Posts: 1416

It's fixable, and an easy fix, but you'll need a new system board, almost guaranteed. *Hopefully* you can find an oscillator board, if that is cheaper, but its likely the system board if you get scrambled menus. I just went through this with an XG1350, BTW.

Go digital, there are some really great looking digitals out there now, and no, you won't have these headaches...all you'll give up is absolute black, which is terribly hard to get from an NEC anyway(if you want shadow detail too, that is...).

dropzone7 · Joined: 12 Jun 2007 Posts: 1069 Location: Charlotte, NC

Mark_A_W · Posted: Thu Mar 27, 2008 2:36 am Post subject:

If it behaves itself (apart from Sync), so things like Pic Mute, Brightness, etc - all work, abet torn to shreds, then it is the OSC board.

If the syncing is random, it may be the system board. XG's aren't hard to fix really.

Did you test this chassis first? Try Hammerhead for parts. Otherwise put the good tubes in the 1100 - it works.