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barclay66
Joined: 27 Jun 2011
Posts: 1304
Location: Germany
TV/Projector: Marquee 9500 Ultra
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| Posted: Thu Mar 01, 2012 10:52 pm Post subject: Marquee 9500 Ultra Focus Board with Black Box |
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Hi,
I'm very happy with the Ultra boards I purchased from ElTopo and which arrived today. They're quite new (early 2004) and look and work perfectly.
One thing caught my immediate attention: The Focus Geometry Module (50-000354-02P Iss. 3 / 03-270354-02P Iss. 2) has a black box mounted on the component side which is connected with a few wires and has two DIP-switches on it.
Does anybody know what this is for and what is controlled with those switches?
Is it a mod or has this been done at VDC? I'd think it has been done at VDC because everything else is stock.
I've made some pictures so You can see what it looks like...
Thank You for any helpful information!
Regards,
barclay66
P.S.: Does anybody have the schematic for the normal Ultra FGM and can send it to me? I'd like to figure out if it's possible to reduce the heat dissipation at the large heat sink...
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Tim in Phoenix
Joined: 21 Oct 2006
Posts: 4409
Location: Phoenix
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| Posted: Thu Mar 01, 2012 11:04 pm Post subject: |
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Hello
A reseller has added some circuitry probably to give more range for some geometry adjustments. SEOS might add that for a dome client etc.
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barclay66
Joined: 27 Jun 2011
Posts: 1304
Location: Germany
TV/Projector: Marquee 9500 Ultra
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| Posted: Fri Mar 02, 2012 12:09 am Post subject: |
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Hello Tim,
That's interesting and seems probable. Thank You!
As special stuff for dome applications isn't quite what really improves HT performance I feel tempted taking it away from the board. In this case I will have to check for any left out components below the box or any cut traces. If "un-modding" fails I still can use it as it is. When I had it working it didn't look much different to the regular board. Only the bottom bow was curved a bit more then. But this should be well within the adjustment possibilities.
Maybe the box does special things only when combined with corresponding Deflection Processor Software. I have a DPB where the sticker on U7 reads "5.25 DOME". I might give it a try just out of curiosity...
Regards,
barclay66
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tse
Joined: 03 May 2006
Posts: 1014
Location: Sweatbucket, Fl.
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| Posted: Fri Mar 02, 2012 12:27 am Post subject: |
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It is not a VDC mod. I've seen it before but don't know what exactly it does. Tim's comment is probably right as the standard geometry does run out of range on some simulator screens.
Scott
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"Were we directed from Washington when to sow and when to reap, we would soon want bread."
Thomas Jefferson
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dvh99
Joined: 25 Dec 2009
Posts: 2158
Location: nederland
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| Posted: Fri Mar 02, 2012 12:30 am Post subject: |
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you can safely take this box of the focus module.
i`d be more worried about the heat generated on the hdm at 1920*1080@60hz or higher, the fgm runs cool in comparison.
_________________
1 answer always poses multiple questions.
marquee 9500ultra HD10L moome hdmi1.3 v3+ some mods.
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barclay66
Joined: 27 Jun 2011
Posts: 1304
Location: Germany
TV/Projector: Marquee 9500 Ultra
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| Posted: Fri Mar 02, 2012 12:31 am Post subject: |
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Thank You Scott for the confirmation. I was hoping for such type of comments. I might take the box apart and document it if anyone should feel the need for such a mod.
Regards,
barclay66
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barclay66
Joined: 27 Jun 2011
Posts: 1304
Location: Germany
TV/Projector: Marquee 9500 Ultra
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| Posted: Fri Mar 02, 2012 12:43 am Post subject: |
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| dvh99 wrote: | you can safely take this box of the focus module.
i`d be more worried about the heat generated on the hdm at 1920*1080@60hz or higher, the fgm runs cool in comparison. |
Hi,
on my machine it's the other way around. At 1080p60 the HDM doesn't get that hot. I haven't measured it but I'd say something around 40-45 deg. celsius (no more than 113 deg. fahrenheit). The FGM's heat sink gets much hotter even at 720p50 only. Interestingly this effect isn't related to the belly fans as those are new and produce more air pressure than the stock fans. The focus settings aren't far away from mid position and therefore I wouldn't expect too much stress on the focus amplifiers. Focus coils are stock too...
Regards,
barclay66
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dvh99
Joined: 25 Dec 2009
Posts: 2158
Location: nederland
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| Posted: Fri Mar 02, 2012 1:31 am Post subject: |
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that is weird, never heard about a fgm that gets hotter then the hdm.
have you measured the heat produced with the new module from eltopo?
just felt at my focus modules heatsink and its warm but certainly not hot, about as warm as my hdm with the new fets, 40-45C i guess after 3 hours of running the pj.
i have stock focus coils.
are you sure you were touching the heatsink of the fgm btw cause it`s reversed if you hang it upside down  .
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marquee 9500ultra HD10L moome hdmi1.3 v3+ some mods.
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barclay66
Joined: 27 Jun 2011
Posts: 1304
Location: Germany
TV/Projector: Marquee 9500 Ultra
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| Posted: Fri Mar 02, 2012 1:42 am Post subject: |
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Nah, the Marquee is on a table at the moment and I really touched the FGM's heat sink. I have two ultra FGMs and both behave identically. I'm not sure about the temp with the non-ultra Focus boards I was using before (I converted my 9500 LC into an ultra successfully). I will have to test that.
I don't think that it will be much different. The additional circuitry on the ultra boards isn't connected to the focus circuitry. I think it just was placed there because the boards had place on them left and because required signals were present at the board connector. Otherwise the pure focus circuitry is mostly identical between ultra and non-ultra...
Regards,
barclay66
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draganm
Joined: 08 Mar 2006
Posts: 8990
Location: Colorado
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| Posted: Fri Mar 02, 2012 1:54 am Post subject: |
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it's German | Curt Palme wrote: | | It changes the amount of pin and key range. I've seen this before somewhere, I believe it was used for curved screens or simulator use. |
https://www.curtpalme.com/forum_archived/viewtopic.php@t=20086.html
Removing does nothing but there was a guy here looking for one. forum member noos@xp37+
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dvh99
Joined: 25 Dec 2009
Posts: 2158
Location: nederland
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| Posted: Fri Mar 02, 2012 2:32 am Post subject: |
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hah, you remembered that post, one of my very first.
_________________
1 answer always poses multiple questions.
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barclay66
Joined: 27 Jun 2011
Posts: 1304
Location: Germany
TV/Projector: Marquee 9500 Ultra
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| Posted: Fri Mar 02, 2012 7:36 am Post subject: |
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| draganm wrote: | it's German | Curt Palme wrote: | | It changes the amount of pin and key range. I've seen this before somewhere, I believe it was used for curved screens or simulator use. |
https://www.curtpalme.com/forum_archived/viewtopic.php@t=20086.html
Removing does nothing but there was a guy here looking for one. forum member noos@xp37+ |
Excellent!
I'll drop a PM to him later...
Regards,
barclay66
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barclay66
Joined: 27 Jun 2011
Posts: 1304
Location: Germany
TV/Projector: Marquee 9500 Ultra
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| Posted: Fri Mar 02, 2012 10:42 pm Post subject: |
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OK,
Mystery solved!
Well, if I was a customer and had (most proably) paid quit a lot for this black box mod then I now would be really pissed!
I couldn't resist, removed it and took it apart. It had been connected at five points: GND, +VCC, -VCC and two wires across R86 on the FCM board.
After peeling off all RTV, guess what: There's almost nothing in it!!!
The two wires at R86 are routed to the DIP-Switch and only two resistors. With this You can put either 14 KOhm or 24 KOhm (1% tolerance Resistors) or both in parallel with R86. That's it!!! The two VCC-wires go ... nowhere, just bogus!!!
So now if anyone needs this stuff he can recereate it by himself.
I've added two pictures for Your pleasure.
Oh, how nice that FGM looks after un-butchering!
Regards,
barclay66
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tse
Joined: 03 May 2006
Posts: 1014
Location: Sweatbucket, Fl.
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| Posted: Sat Mar 03, 2012 1:51 am Post subject: |
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Connecting the resistors across R86 will increase the amplitude of the top and bottom pin as well as the north south bow signals that are sent to the vertical convergence amps. These signals are primarily horizontal frequency parabolic waveforms that need alot of voltage from the convergence amps to reproduce the desired parabolic current waveforms. It would be real easy to increase the input levels to the point where the output amps start to clip. The mod must have made someone happy, though.
Scott
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"Were we directed from Washington when to sow and when to reap, we would soon want bread."
Thomas Jefferson
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noos@xp37+
Joined: 17 Jun 2008
Posts: 464
Location: Berlin/Munich
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| Posted: Tue Jan 14, 2014 11:23 am Post subject: |
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| tse wrote: | Connecting the resistors across R86 will increase the amplitude of the top and bottom pin as well as the north south bow signals that are sent to the vertical convergence amps. These signals are primarily horizontal frequency parabolic waveforms that need alot of voltage from the convergence amps to reproduce the desired parabolic current waveforms. It would be real easy to increase the input levels to the point where the output amps start to clip. The mod must have made someone happy, though.
Scott |
Scott, very good post. Do you think I could use it here:
http://www.curtpalme.com/forum/viewtopic.php?p=401651#401651
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tschaeikaei
Joined: 08 Apr 2013
Posts: 490
Location: Germany/Saarland
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| Posted: Sat Apr 26, 2014 8:39 pm Post subject: |
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My 8500 got it too. I think this projector has been in a tank simulator, but see here:
http://www.curtpalme.com/forum/viewtopic.php?p=409541#409541
I guess, there were two projectors in that simulator (i now own both) and they seem
(like you said that mod gives wider range for bow and pin cushion) and like the sticker says it...
must have been a curved screen. If not, the mod had been useless.
So i think i could build a curved screen myself without worrying about running off adjustments.
Do you think the HD8 RevB are good for curved too?
Regards, Julian
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Marquee 9500U edgeblend P43 | NEC 9PG
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