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gjaky
Joined: 05 Jun 2010
Posts: 2802
Location: Budapest, Hungary
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| Posted: Thu Aug 01, 2013 9:07 am Post subject: |
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If it turns itself off by its own, then usually throws an error code, isn't it?
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projectors in the past : NEC 6-9PG xtra, Electrohome Marquee 6-7500, NEC XG 1351 LC ( with super modified Electrohome VNB neckboard !!!)
current: VDC Marquee 9500LC
The MOD: VNB-DB, VIM-DB
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Marcel_D
Joined: 22 Sep 2007
Posts: 54
Location: Canada
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| Posted: Thu Aug 01, 2013 9:15 am Post subject: |
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Oh I think it's cause I have a fan unplugged...yes that's it, my bad.
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Marcel_D
Joined: 22 Sep 2007
Posts: 54
Location: Canada
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| Posted: Thu Aug 01, 2013 9:46 am Post subject: |
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Wait what...I was going through the garbled input menu and selected the only one in there, and the projector locked on to it and all the menus went perfect and it's displaying the video signal.
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gjaky
Joined: 05 Jun 2010
Posts: 2802
Location: Budapest, Hungary
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| Posted: Thu Aug 01, 2013 9:52 am Post subject: |
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Let's hope it remains in that state after an on/off cycle.... otherwise sometimes it also helps if you re-flash the EEPROM through the PC control software (it needs a custom serial cable (wiring available on this site), and a 32bit Win computer with RS232 interface)
_________________
projectors in the past : NEC 6-9PG xtra, Electrohome Marquee 6-7500, NEC XG 1351 LC ( with super modified Electrohome VNB neckboard !!!)
current: VDC Marquee 9500LC
The MOD: VNB-DB, VIM-DB
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Marcel_D
Joined: 22 Sep 2007
Posts: 54
Location: Canada
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| Posted: Thu Aug 01, 2013 9:55 am Post subject: |
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Yeah still working after a power cycle. Guess I'll continue recapping the other boards and just, hope it stays working.
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Thu Aug 01, 2013 12:04 pm Post subject: |
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Have you tried clearing out all the saved inputs and starting from scratch?
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Marcel_D
Joined: 22 Sep 2007
Posts: 54
Location: Canada
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| Posted: Fri Aug 02, 2013 6:42 am Post subject: |
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That's how I started this whole deal before it pooped out on me.
But I deleted this one, power cycled and it was acting fine. I added a new entry and it's still happy.
Last edited by Marcel_D on Fri Aug 02, 2013 9:19 pm; edited 1 time in total
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Tinman
Joined: 09 Mar 2006
Posts: 1326
Location: Carson City Nevada
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| Posted: Fri Aug 02, 2013 6:05 pm Post subject: |
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Scrambled menus are caused by bad capacitors on the system board, around the oscillator on the deflection board, and in rare cases by corrupt memory.
However, clearing the memory can in some cases render the projector useless, so it's generally the last thing I did when this happened.
Hopefully it'll stick now.
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This space for rent.
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Fri Aug 02, 2013 9:15 pm Post subject: |
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Clearing what memory? The signal inputs or the chips on the system board?
The chips on the system board are socketed UV erasable eproms on every system board i have here, which would be a very simple fix, so surely you cant mean that.
I was refering to clearing all signal input memories, ive always done that whenever ive set up an NEC, im sure Curt even recomends it too, so you couldnt mean that either, so which memory clearing are you talking about?
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Tinman
Joined: 09 Mar 2006
Posts: 1326
Location: Carson City Nevada
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| Posted: Sat Aug 03, 2013 5:45 pm Post subject: |
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Yes, clear any old signal entries. I have had to do a factory initialize once or twice to blow out everything, but that can be risky if the set is running on the edge of it's spec. Sometimes an old signal entry is all that keeps it running.
In an ideal world you can do an initialize in the advanced menu option and the set should restart with everything wiped and in a default state. On a healthy PG this works fine. THEN build a fresh signal entry from scratch.
Sometimes manually clearing the signal entries line by line isn't enough to reset any corrupt bits in the memory.
OK, I almost hate to say it, but I really don't miss doing this any more. 
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This space for rent.
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Sat Aug 03, 2013 11:46 pm Post subject: |
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Ive never had the scambled menus, but when ever ive move the set ive redone all inputs from scratch. I do the same with the XG. Its how i roll 
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Marcel_D
Joined: 22 Sep 2007
Posts: 54
Location: Canada
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| Posted: Sun Aug 18, 2013 3:08 am Post subject: |
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Replaced all the large add-in board's caps. On the gain ctl and video out I used a combination of ripping and plain old desoldering. Everything works fine. I should have the set showing a nice picture soon.
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Sun Aug 18, 2013 8:37 am Post subject: |
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Good stuff 
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the big E
Joined: 20 Apr 2013
Posts: 1928
Location: speedwell Tn.
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| Posted: Sun Aug 18, 2013 3:30 pm Post subject: |
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At least your getting it working I haven't had the time to even work on my nec 
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crt king of black
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Marcel_D
Joined: 22 Sep 2007
Posts: 54
Location: Canada
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| Posted: Sat Aug 24, 2013 3:01 am Post subject: |
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Here's another question for you pros...why is it when I increase the raster in the horizontal direction beyond like +30%, the test pattern on the left side of each tube (looking into the lense) begins like, breaking up? Like there's static or something just on that far side.
Edit 1: And...what does it mean if I can't get the phase square to line up with the hump? Even at +100% it doesn't reach.
Last edited by Marcel_D on Sat Aug 24, 2013 3:43 am; edited 2 times in total
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the big E
Joined: 20 Apr 2013
Posts: 1928
Location: speedwell Tn.
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| Posted: Sat Aug 24, 2013 3:32 am Post subject: |
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| Marcel_D wrote: | Here's another question for you pros...why is it when I increase the raster in the horizontal direction beyond like +30%, the test pattern on the left side of each tube (looking into the lense) begins like, breaking up? Like there's static or something just on that far side.
And...what does it mean if I can't get the phase square to line up with the hump? Even at +100% it doesn't reach. |
Sounds like a capicatior issue on a board
The second question I have no clue
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crt king of black
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Marcel_D
Joined: 22 Sep 2007
Posts: 54
Location: Canada
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| Posted: Sat Aug 24, 2013 3:44 am Post subject: |
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| the big E wrote: | | Marcel_D wrote: | Here's another question for you pros...why is it when I increase the raster in the horizontal direction beyond like +30%, the test pattern on the left side of each tube (looking into the lense) begins like, breaking up? Like there's static or something just on that far side.
And...what does it mean if I can't get the phase square to line up with the hump? Even at +100% it doesn't reach. |
Sounds like a capicatior issue on a board
The second question I have no clue |
Hmm alright. I figured the phase thing was due to my input signal. So I'll drop it down to 1280x720 but now...
Frustrations! When using powerstrip, if I bump any refresh rate above 65Hz the projector screen starts flickering as if its at like half that. If I do it with the windows display manager I can bump it up to whatever refresh rate I want and it works fine. Gah this program drives me insane sometimes.
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the big E
Joined: 20 Apr 2013
Posts: 1928
Location: speedwell Tn.
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| Posted: Sat Aug 24, 2013 3:53 am Post subject: |
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| Marcel_D wrote: | | the big E wrote: | | Marcel_D wrote: | Here's another question for you pros...why is it when I increase the raster in the horizontal direction beyond like +30%, the test pattern on the left side of each tube (looking into the lense) begins like, breaking up? Like there's static or something just on that far side.
And...what does it mean if I can't get the phase square to line up with the hump? Even at +100% it doesn't reach. |
Sounds like a capicatior issue on a board
The second question I have no clue |
Hmm alright. I figured the phase thing was due to my input signal. So I'll drop it down to 1280x720 but now...
Frustrations! When using powerstrip, if I bump any refresh rate above 65Hz the projector screen starts flickering as if its at like half that. If I do it with the windows display manager I can bump it up to whatever refresh rate I want and it works fine. Gah this program drives me insane sometimes. |
Sounds like a issue with power strip to me
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crt king of black
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Sat Aug 24, 2013 4:38 am Post subject: |
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No, its the phase being out of adjustment, adjust the amplitude with the 2 pots on the DEF board.
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Marcel_D
Joined: 22 Sep 2007
Posts: 54
Location: Canada
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| Posted: Sat Aug 24, 2013 5:43 am Post subject: |
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I was going to do all the adjusments on the deflection board but before I even got to step 2 of the very beginning it all went wrong. The projector is stuck in a continual cycle of turning itself on for a few couple seconds then off again. Error code 00 which I assume means D0. I was turning down the H.out pot on the deflection board when the screen started oscillating then did the above
Hmm...D5023 stays lit for the short time it turns itself on. Let's see what the manual has to say: "Can the horizontal what is the voltage peak to peak value at these points?"
Translation: "You broke it"
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