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MileHi8500
Joined: 28 Nov 2009
Posts: 4
Location: Colorado
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| Posted: Sat Nov 28, 2009 5:16 pm Post subject: Marquee 8500 ACON Issues |
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Hello All,
My ACON seems to be working, but it hasn't figured out that it is on a projector that is ceiling mounted. I have tried manual screen setup, but it still seems to look the wrong way (ie the box is projected on the right the ACON looks left, the box is projected on the bottom the ACON looks up). Any ideas?
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draganm
Joined: 08 Mar 2006
Posts: 8990
Location: Colorado
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| Posted: Sat Nov 28, 2009 6:10 pm Post subject: |
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when you project internal menu's and test patterns are they scanning correctly or are they inverted as well. I'm in
Brighton if you get really stuck
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MileHi8500
Joined: 28 Nov 2009
Posts: 4
Location: Colorado
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| Posted: Sat Nov 28, 2009 6:23 pm Post subject: |
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Everything is set for ceiling mount. The menus and the inputs all display correctly. The manual says that the ACON should correct for this automatically, but it just doesn't seem to.
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draganm
Joined: 08 Mar 2006
Posts: 8990
Location: Colorado
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| Posted: Sat Nov 28, 2009 6:28 pm Post subject: |
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| MileHi8500 wrote: | | Everything is set for ceiling mount. The menus and the inputs all display correctly. The manual says that the ACON should correct for this automatically, but it just doesn't seem to. |
Bad Acon's are failry common, I have 2 or 3 here that the camera just kinda looks off into space. What year is the machine?
You really don't need ACON anyway, assuming you aligned the machine well mechanically (tube Toe-in), centered the rasters well, and have the machine the right distance from the screen manual Convergence (using the remote) takes about 10 minutes from scratch.
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MileHi8500
Joined: 28 Nov 2009
Posts: 4
Location: Colorado
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| Posted: Sat Nov 28, 2009 6:30 pm Post subject: |
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The year is May 1997. The ACON is from Curt, and should be tested good.
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draganm
Joined: 08 Mar 2006
Posts: 8990
Location: Colorado
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| Posted: Sat Nov 28, 2009 6:48 pm Post subject: |
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| MileHi8500 wrote: | | The year is May 1997. The ACON is from Curt, and should be tested good. |
ok, then the Acon is probly not picking up the screen. The room needs to be fairly dark so that the camera will see the screen. Is this in your basement with good light control?
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
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| Posted: Sat Nov 28, 2009 6:53 pm Post subject: |
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As Dragan said, the lights in the room have to be off completely.
Sometimes, it helps if you 'force' the ACON by hand to 'see' the center square as the ACON boots up. The servos then lock and the set takes it from there.
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stefuel
Joined: 07 Mar 2006
Posts: 3353
Location: Green Harbor MA USA
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| Posted: Sat Nov 28, 2009 6:58 pm Post subject: |
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Ahhhh, Acon's only usefull for a simulated acid trip 
_________________
Chip
A Barco is only a AmPro with training wheels
Card carrying member of the AVS chain gang.
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draganm
Joined: 08 Mar 2006
Posts: 8990
Location: Colorado
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| Posted: Sat Nov 28, 2009 7:00 pm Post subject: |
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| Curt Palme wrote: | | Sometimes, it helps if you 'force' the ACON by hand to 'see' the center square as the ACON boots up. |
wow, I actually forgot about that little trick but it works if the camera is good.  Out of hlaf-dozen Acon's I've had here only 1 or 2 actually worked. It's really cool to watch though, kinda trippy and psychadelic to show visitors assuming your friends are old enough to remember what that means 
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draganm
Joined: 08 Mar 2006
Posts: 8990
Location: Colorado
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| Posted: Sat Nov 28, 2009 7:02 pm Post subject: |
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LOL, chip was typing the same thing I was thinking. You know you've been on the forum too long when.......................
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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| Posted: Sat Nov 28, 2009 7:06 pm Post subject: |
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| draganm wrote: | | Curt Palme wrote: | | Sometimes, it helps if you 'force' the ACON by hand to 'see' the center square as the ACON boots up. |
wow, I actually forgot about that little trick but it works if the camera is good. Out of hlaf-dozen Acon's I've had here only 1 or 2 actually worked. It's really cool to watch though, kinda trippy and psychadelic to show visitors assuming your friends are old enough to remember what that means |
Damn it!! Now I want an Acon just for fun!!!
Athanasios
_________________
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"Republicans believe every day is the Fourth of July, but the Democrats believe every day is April 15." --- President Reagan
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draganm
Joined: 08 Mar 2006
Posts: 8990
Location: Colorado
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| Posted: Sat Nov 28, 2009 9:11 pm Post subject: |
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| Nashou66 wrote: | Damn it!! Now I want an Acon just for fun!!!
Athanasios |
that's pretty mcuh what they're best for, a good manual convergence will always yield better results assuming the convergence is stable and doesn't drift.
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antorsae
Joined: 16 Jul 2006
Posts: 297
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| Posted: Sat Nov 28, 2009 10:38 pm Post subject: |
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I love the ACON thing. I actually went back from CLM V8 to V4.2c just b/c of the ACON feature. I've done so many from scratch setups now that it's really nice to sit down and relax for 5 mins while the ACON does it work and then you only have to manually tune it.
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antorsae
Joined: 16 Jul 2006
Posts: 297
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| Posted: Sat Nov 28, 2009 10:43 pm Post subject: |
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One other thing: One of my ACONs was behaving very erratically until I found out that the clip that holds it (a metal tensioned clip ... I don't know the word in English...) was not making enough force to help the little motor move the ACON assembly... so the ACON weight kept preventing the motor from looking down and the ACON was always looking up....
I took the metal clip off and re-attached it giving it a few more rounds around the fastener to make is more tensioned. Once I did this that ACON started working...
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
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| Posted: Sat Nov 28, 2009 10:56 pm Post subject: |
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BTW, I think I did mention (maybe not!) that for some reason a ceiling mounted ACON has a harder time working than a floor mount one. Something to do with the spring tensions, I think.
Check over at www.avsforum.com. Someone a few years ago posted a 'fix up your ACON' post. He went right down to opening it and cleaning it, and did mention about the spring tension for ceiling mounting. He claimed it took his ACON from working 20% to about 90% of the time or something like that.
If you can find that, check it out. I think it's in one of hte older read only archives, as it was a few years ago.
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MileHi8500
Joined: 28 Nov 2009
Posts: 4
Location: Colorado
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| Posted: Mon Nov 30, 2009 5:34 pm Post subject: |
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I got it working. Thanks to all for the great ideas. The fix was a combination of of hand pointing it initially, and removing the tension spring. Thanks again for the insights, everyone here really knows their stuff!
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