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Meemil
Joined: 25 Mar 2016
Posts: 96
Location: Finland
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| Posted: Wed Jul 17, 2019 4:55 pm Post subject: Barco 909 focus yokes in Marquee |
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Hi,
I've acquired some Barco 909 yokes wired for Marquee. These apparently originate from Mike Parker. I can get the sharpness very good without blooming when in exact position on tube neck. However, the adjustment range is very tiny, I barely can see any difference when ramping from 0 to 100. This makes astigmatism impossible.
Could this be a compatibility issue with software version or maybe even my FGM? It works well with stock yokes though.
PJ is Marquee 9500 Ultra
Thanks!
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Tim in Phoenix
Joined: 21 Oct 2006
Posts: 4409
Location: Phoenix
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| Posted: Thu Jul 18, 2019 12:50 am Post subject: |
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Hello
I am not schooled on magnetics but if the Barco windings have different resistance or inductance characteristics than the Marquee yokes then they likely will not focus the same. Sounds like the range is compressed. Also I believe the Marquee yokes may have temperature correction feeding back to the focus board.
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jbmeyer13
Joined: 03 Dec 2010
Posts: 1135
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| Posted: Thu Jul 18, 2019 4:36 pm Post subject: Re: Barco 909 focus yokes in Marquee |
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| Meemil wrote: | Hi,
I've acquired some Barco 909 yokes wired for Marquee. These apparently originate from Mike Parker. I can get the sharpness very good without blooming when in exact position on tube neck. However, the adjustment range is very tiny, I barely can see any difference when ramping from 0 to 100. This makes astigmatism impossible.
Could this be a compatibility issue with software version or maybe even my FGM? It works well with stock yokes though.
PJ is Marquee 9500 Ultra
Thanks! |
Having played with "Frankenyokes" extensively I found the stock Marquee Yokes to work best. The lack of adjustment didn't sit well with me so went back to Stock. Properly modified boards and proper set up will result in a VERY sharp picture so no need to swap in Sony or Barco yokes.
_________________
Projector: Modded 9501LC ULtra- MP VIM, Vold VNB, ETECH LVPS, Silver VIM Cables, HD10F's & a V1 case!
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Meemil
Joined: 25 Mar 2016
Posts: 96
Location: Finland
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| Posted: Thu Jul 18, 2019 6:48 pm Post subject: Re: Barco 909 focus yokes in Marquee |
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| jbmeyer13 wrote: | | Meemil wrote: | Hi,
I've acquired some Barco 909 yokes wired for Marquee. These apparently originate from Mike Parker. I can get the sharpness very good without blooming when in exact position on tube neck. However, the adjustment range is very tiny, I barely can see any difference when ramping from 0 to 100. This makes astigmatism impossible.
Could this be a compatibility issue with software version or maybe even my FGM? It works well with stock yokes though.
PJ is Marquee 9500 Ultra
Thanks! |
Having played with "Frankenyokes" extensively I found the stock Marquee Yokes to work best. The lack of adjustment didn't sit well with me so went back to Stock. Properly modified boards and proper set up will result in a VERY sharp picture so no need to swap in Sony or Barco yokes. |
That might very well be true. However, with quick tests there is definitely less smearing and almost no blooming which was an issue with my stock focus yokes at high contrast. I'll do some more tests, try the stig out and see if its any better.
I've recapped pretty much every board and there are few MP boards as well, just trying to get the very best outta the pj.
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Tim in Phoenix
Joined: 21 Oct 2006
Posts: 4409
Location: Phoenix
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| Posted: Sun Jul 21, 2019 1:50 pm Post subject: Re: Barco 909 focus yokes in Marquee |
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| Meemil wrote: | | I've recapped pretty much every board and there are few MP boards as well, just trying to get the very best outta the pj. |
He's in Finland. There's not much else to do all winter! LOL
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kal
Forum Administrator
Joined: 06 Mar 2006
Posts: 18114
Location: Ottawa, Canada
TV/Projector: JVC DLA-NZ7
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HaydnG90
Joined: 22 May 2006
Posts: 1356
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| Posted: Sun Jul 21, 2019 6:04 pm Post subject: |
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But its a dry heat
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Meemil
Joined: 25 Mar 2016
Posts: 96
Location: Finland
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| Posted: Mon Jul 22, 2019 7:36 am Post subject: |
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Yepp, our temps bounce like -25c in winters and +24 in summer. A total hell for CRT and can expect almost a full re-setup every season change.
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