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CZ Eddie
Joined: 23 Mar 2006
Posts: 1601
Location: Austin, TX
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| Posted: Tue Nov 14, 2006 1:41 pm Post subject: Marquee Maintenence group purchase? |
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Anyone want to go in on a buy of all the caps & other parts needed from the Marquee maintenence thead (the one written up by Mike Parker)?
I think you have to buy the caps & all in bulk. Like minimum orders of 1000? Depending on where you source the parts from. If we were all to get together and figure out exactly what parts to buy and from where... then we could have everything sent to one person and have him/her divy it all up to the rest of us. I tried to figure it all out one day, where to get the parts from and all... but eventually gave up. 
I'm in! 
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Joust
Joined: 05 May 2006
Posts: 2429
Location: Almonte, Ontario, Canada
TV/Projector: Marquee 8501LC
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| Posted: Tue Nov 14, 2006 3:00 pm Post subject: |
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sign me up.
I'd like to find his recommended op-amps as well.
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cmjohnson
Joined: 03 Apr 2006
Posts: 5180
Location: Buried under G90s
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| Posted: Tue Nov 14, 2006 3:50 pm Post subject: |
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The first thing to do would be to put together a parts list, with quantities of each part that would be needed per projector.
Start with a basic package of parts that everybody would want to put in.
Worry about optional upgrade kits later.
Minimum order quantities are anywhere between 100 and 1000 for most parts you'd
need, if ordered from a distributor. It depends on the part, the manufacturer,
and the distributor's policies.
CJ
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JustGreg
Joined: 07 Mar 2006
Posts: 3098
Location: Kenosha, WI
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| Posted: Tue Nov 14, 2006 4:27 pm Post subject: |
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The Marquee maint thread moved to here has been cleaned up by Joustman (Barry) and makes for easier reading. All the parts are listed but I didn't have the time to get a count.
I ordered 12 MAX4224ESA's yesterday but I think I shorted myself on what I need to do the NB's and the VIM. Good thing I did some reading today tho because I'd forgotten resistors have to be changed in conjunction with the replacement of the opamps.
Depending on the cost (Christmas and property taxes at the same time!  ) I'd be willing to take part.
--Greg--
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Greg
"Is it ignorance or apathy? Hey, I don't know and I don't care!" --Jimmy Buffett
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Typh92
Joined: 12 Nov 2006
Posts: 4
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| Posted: Tue Nov 14, 2006 4:38 pm Post subject: |
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I would probably be interested.
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Kdukes
Joined: 10 Mar 2006
Posts: 54
Location: New Jersey
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| Posted: Tue Nov 14, 2006 4:58 pm Post subject: |
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I'd definitely be interested also x2
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JustGreg
Joined: 07 Mar 2006
Posts: 3098
Location: Kenosha, WI
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| Posted: Tue Nov 14, 2006 5:30 pm Post subject: |
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Once the takers are all in, we should divide up the different sections and each person responsible for a given section can do the work to determine and verify the parts, item count, vendor, pricing, and then add it to an ongoing thread.
As a safety precaution perhaps we should run the completed thread past Mike before ordering; or exchange areas and double check each others work. We don't want to end up with mass produced failures. 
Yes? No? Maybe?
--Greg--
_________________
Greg
"Is it ignorance or apathy? Hey, I don't know and I don't care!" --Jimmy Buffett
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Joust
Joined: 05 May 2006
Posts: 2429
Location: Almonte, Ontario, Canada
TV/Projector: Marquee 8501LC
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| Posted: Tue Nov 14, 2006 7:38 pm Post subject: |
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| JustGreg wrote: | The Marquee maint thread moved to here has been cleaned up by Joustman (Barry) and makes for easier reading. All the parts are listed but I didn't have the time to get a count.
I ordered 12 MAX4224ESA's yesterday but I think I shorted myself on what I need to do the NB's and the VIM. Good thing I did some reading today tho because I'd forgotten resistors have to be changed in conjunction with the replacement of the opamps.
--Greg-- |
Yes in fact, I am he. Joustman is my handle from the "Other" forum.
I like your divide and conquor idea.
I'll volunteer to do the VIM. I should have a couple in soon to "play" with.
Any donations for boards to experiment with would be greatly appreciated as well. 
Mike, was the MAX4224ESA your final chosen op-amp? Last we chatted while i was compiling info, you were still experimenting with op-amps. you mentioned that the National LMH6705 was the "real" replacement but they are still not avaialable.
Greg, make note of the supporting component changes when using the MAX4224ESA's.
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mp20748
Joined: 12 Sep 2006
Posts: 5689
Location: Maryland
TV/Projector: 9500LC Ultra / Super 02 and 03 VIM
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| Posted: Tue Nov 14, 2006 7:48 pm Post subject: |
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[quote="Joust"] | JustGreg wrote: |
Mike, was the MAX4224ESA your final chosen op-amp? |
Consider it as a second choice, because it may not work in all Marquee boards, or in every circuit that used a CLC449. And that may be the case with any substitute. The problem with the later version chips has a lot to do with the condition of other compoents in the video chain. if a video chain is HOT (working properly) you may get a bit of parisitic oscillation. If it's not HOT, then you'll not have a problem with the substitutes.
Also go with this guy here:
LMH6703MA (National Semiconductor)
You can also use the chip (HFA1100/Entersil) It's a direct replacement.
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JustGreg
Joined: 07 Mar 2006
Posts: 3098
Location: Kenosha, WI
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| Posted: Tue Nov 14, 2006 10:02 pm Post subject: |
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Ahhh crap. Figures.
I only ordered those because the cleaned up Marquee Maint doc posted here referenced the MAX chip and I ASSumed it was noted because it was the finalized best replacement. Oh well. Free parts for the bin.
--Greg--
_________________
Greg
"Is it ignorance or apathy? Hey, I don't know and I don't care!" --Jimmy Buffett
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Joust
Joined: 05 May 2006
Posts: 2429
Location: Almonte, Ontario, Canada
TV/Projector: Marquee 8501LC
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| Posted: Tue Nov 14, 2006 10:03 pm Post subject: |
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| mp20748 wrote: | | Joust wrote: | | JustGreg wrote: |
Mike, was the MAX4224ESA your final chosen op-amp? |
Consider it as a second choice, because it may not work in all Marquee boards, or in every circuit that used a CLC449. And that may be the case with any substitute. The problem with the later version chips has a lot to do with the condition of other compoents in the video chain. if a video chain is HOT (working properly) you may get a bit of parisitic oscillation. If it's not HOT, then you'll not have a problem with the substitutes.
Also go with this guy here:
LMH6703MA (National Semiconductor)
You can also use the chip (HFA1100/Entersil) It's a direct replacement. |
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Yes, it seems to me the 6703 has a much better Gain Bandwidth. 1200Mhz as opposed to the 750Mhz of the 6702 even though its -3db point is slightly lower. Have you dropped these in as fit, form, and function replacements?
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mp20748
Joined: 12 Sep 2006
Posts: 5689
Location: Maryland
TV/Projector: 9500LC Ultra / Super 02 and 03 VIM
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| Posted: Tue Nov 14, 2006 10:23 pm Post subject: |
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| Joust wrote: |
Have you dropped these in as fit, form, and function replacements? |
Yes, they'll work, and so will the MAX chip. But because of variances in the circuits from time and component attenuation, you may need to play with the the resistor network values at the chip.
With the exception of the neck board (U2). It may be best to follow the chips feedback/ground resistor values found with the chips data. But this applies only to the 02 VIM, and first stage section of the 03 VIM only.
So you can pnly play with the resistor values on the first stage section on the VIM only. Stay away from the second set of CLC449's found on the 03 VIM. Those chips should work fine in that stage without changing the resistors.
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aspec2
Joined: 10 Apr 2006
Posts: 549
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| Posted: Tue Nov 14, 2006 11:25 pm Post subject: |
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Hi
I think there is a source for the 449....still. There is/was a minimum order of 75 or a hundred. I don't remember. I don't have any left but I can check with the source and see if there are still more available. I need to get home to find out.
Walt
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CZ Eddie
Joined: 23 Mar 2006
Posts: 1601
Location: Austin, TX
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| Posted: Wed Nov 15, 2006 1:20 am Post subject: |
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I guess I'm more interested in maintenence related items than doing any hot-rodding. I've already got Mike's hot-rod modifications done to my VIM & neckboards.
But if I have to chip in on an entire package of related bits to make things easier for everyone, then I'll do that.
I'd like to get enough parts to replace all the caps & whatnot that may wear out over time. Stuff for my convergence boards, focus, HDM, etc! I'd be willing to search out a parts source also. I can't do any research during normal work hours though, due to the high security restrictions on Internet useage and phone calls where I work.
I just want to make sure that every board in my 'quee is "up to snuff". Btw, if you're looking for better picture quality... then you might want to instead just save your pennies and go directly for some MP mods. Especially the MP ver2 VIM mod. Thats the shiznit for better picture quality! :p
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CZ Eddie
Joined: 23 Mar 2006
Posts: 1601
Location: Austin, TX
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DB Cooper
Joined: 14 Mar 2006
Posts: 265
Location: Ambler, Lancaster PA
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| Posted: Wed Nov 15, 2006 1:50 am Post subject: |
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Hey Eddie, Don't dicount those neck board mods! you'd be suprised how important they are to the overall image package you get from the MP mods!
John
JBJR
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CZ Eddie
Joined: 23 Mar 2006
Posts: 1601
Location: Austin, TX
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| Posted: Wed Nov 15, 2006 1:55 am Post subject: |
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Oh heck yeah, John. The neckboard mods from MP also do wonders for the image. Easily visible improvements. The VIM mod is my favorite though.
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cmjohnson
Joined: 03 Apr 2006
Posts: 5180
Location: Buried under G90s
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| Posted: Wed Nov 15, 2006 3:41 am Post subject: |
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I have the opportunity to pick up a fully featured surface mount rework station and now I think I'll do it if I can get the right deal. This will give me the ability to easily rework any board in a Marquee in the safest possible manner. If I do it, then I will be able to
offer board rework services like the ones mentioned in this thread, for the benefit
of those who don't want to tackle it themselves. And I will be able to guarantee my work.
CJ
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JustGreg
Joined: 07 Mar 2006
Posts: 3098
Location: Kenosha, WI
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| Posted: Wed Nov 15, 2006 3:44 am Post subject: |
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This is starting to look like it might infringe on protected territory but I think it was inevitable that Marquee owners grew and matured over time to start banging on the door of other peoples livelihood.
Mike has done some, by my humble nano electronics knowledge, great things to re shape and re mold some already amazing technology. I certainly don't want to see the fruits of his labor not pay off. But on the other hand, we were destined to get to the point where this might happen.
I don't mean to in any way imply that we all possess the skills necessary to hurt anything very much but,
EDIT: (I meant others earnings)>>>
speaking for myself, I simply don't have sufficient income to do anything BUT perform these things myself. I wish I did but "It tis' what it tis'".
Even if we eventually and collectively discovered all the things that make an MP mod an MP mod, it doesn't mean it will create another person willing to undertake a high level DIY for the same reasons as someone who just has the money to "ring up an order".
I guess what I'm trying to say is that I don't think that even if I had the money I would buy off the rack upgrades. I don't believe that's what hobbying is about...no matter what the hobby.
I just don't want to get to the end and feel as if I'd called the hint line for $4.99 to make it over the last hurdle in a PC game only to be treated to a cinemtaic end of game and the credits rolling...no more chances to play the game.
It's worth it to me and my hobby to take the chance of totally screwing the pooch while attempting a bragging rights hot rodding tweek.
To quote the great Forest Gump, "And that's all I have to say about thay-at."
--Greg--
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Greg
"Is it ignorance or apathy? Hey, I don't know and I don't care!" --Jimmy Buffett
Last edited by JustGreg on Wed Nov 15, 2006 3:55 am; edited 1 time in total
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JustGreg
Joined: 07 Mar 2006
Posts: 3098
Location: Kenosha, WI
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| Posted: Wed Nov 15, 2006 3:52 am Post subject: |
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| cmjohnson wrote: | I have the opportunity to pick up a fully featured surface mount rework station and now I think I'll do it if I can get the right deal. This will give me the ability to easily rework any board in a Marquee in the safest possible manner. If I do it, then I will be able to
offer board rework services like the ones mentioned in this thread, for the benefit
of those who don't want to tackle it themselves. And I will be able to guarantee my work.
CJ |
I rest my case. If I get to a mod/upgrade that requires specialized equipment, I'll send off the board and pay for that particular phase to be completed before I get it back and go on to the next step. It isn't logical for the casual hobbyist to spend the money for a SMT rework station or the like for a one time activity.
This should be fun. And I might even get to learn how to use an O scope in the process...soomething I've always wanted to do but never had the chance to.
--Greg--
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Greg
"Is it ignorance or apathy? Hey, I don't know and I don't care!" --Jimmy Buffett
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