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the big E
Joined: 20 Apr 2013
Posts: 1928
Location: speedwell Tn.
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| Posted: Fri Jul 05, 2013 4:50 pm Post subject: Thinking of doing a retro box |
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Ok I am thinking of doing a retro box setup with my Ecp once I get my nec working(if I can get the gain board recapped)
I need to know do I need to get different lens or not?
I have a old tv body that I am going to use it has a 45or 47 inch screen
I know I would need to flip around the connector on the yokes to do this
Any tips would be greatly appreciated thanks
If any one wants to know why
I am doing this for nostalgia resons as the tv body is a late 80s style wooden type which I would complete with a great speaker system in it also
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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 Jul 06, 2013 2:52 am Post subject: |
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Yes you will need other lenses, and youll probably be better off fitting the 07MS tubes into the original rear pro TV LC housings. Youll need to remover the housings from your tubes and the LC housings from the original tubes.
You will also need to completely gut the chassis and figure out how youll mount it all inside the TV, which on such a small set as 47", could possibly be tricky.
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the big E
Joined: 20 Apr 2013
Posts: 1928
Location: speedwell Tn.
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| Posted: Sat Jul 06, 2013 2:59 am Post subject: |
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| CasetheCorvetteman wrote: | | Yes you will need other lenses, and youll probably be better off fitting the 07MS tubes into the original rear pro TV LC housings. |
I have one of the housings that were in the tv before I gutted it(kept the screen and bezal for it)
I am going to find them before I do the work as I would hate to get the projector ready only to not have the stuff ready
I do have the blue tube from the said tv(mint and never used with the glycol still in and clean) I just have to find one more of the housings I also have the lens for the tv tubes somewhare I have found one with one of the housings
Now would I just mount the tubes from the projector to the tvs tube housings then mount them in the tv chassis(still has the light box mount for the tubes in the chassis) just have to clean some stuff out and move my audio system out of it(don't ask)
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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 Jul 06, 2013 3:16 am Post subject: |
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Id have to see pics.
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the big E
Joined: 20 Apr 2013
Posts: 1928
Location: speedwell Tn.
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| Posted: Sat Jul 06, 2013 3:22 am Post subject: |
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| CasetheCorvetteman wrote: | | Id have to see pics. |
Pm me your email and I will send some soon of the housings for the tv
I thought of mounting the projectors tubes in the tvs housings using the housings from the projector
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crt king of black
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the big E
Joined: 20 Apr 2013
Posts: 1928
Location: speedwell Tn.
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| Posted: Sat Jul 06, 2013 5:35 am Post subject: |
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one of the housings for the tv has disappeared along with the red and green tubes that were in the tv so i don't know if i will be able to do this or not(no clue what happened to them over the years)
i know i have the lens(which mount up to the mounting hardware for the projector tubes in the projector)i can get the number off them and post it if you want(they are for lc optics housings ao i am not sure if they will work with the ac optics setup of the projector)
if this idea doesn't go through i may do a setup in my bedroom(would love to have a larger then life screen in there    )
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Sat Jul 06, 2013 7:27 am Post subject: |
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Post the pics here. Use Photobucket.com
You wont be able to use the AC lenses you have, the focal range wont be within their spec.
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the big E
Joined: 20 Apr 2013
Posts: 1928
Location: speedwell Tn.
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| Posted: Sun Jul 07, 2013 4:52 am Post subject: |
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here is a pic of how the housings look with one of the original tubes of the tv i have the lens removed so i don't scratch it
the only problem i am having is one of the housings is m.i.a. and the other is missing the back metal half but they are for 7 inch tubes.
just not sure how i am going to mount the tubes of my projector in these when i get ready to do this if i can at all(it will depend on if i can find the other housing and parts
this tv housing was the first projection tv i had that i had to gut out(parts was not available for it at the time) but the cabinet is amazing as it is solid wood(literally and is heavy to boot)
keep in mind i have had this for years(never got to see if the tube ever did work but it was brand new when i got the tv) i hated to gut the tv  but because parts was discontinued and the part it needed was removed by the sears"repair guy" the set never saw use after that
that is not going to be the case with the samsung the guy gave me  as i can get parts for it
ps case the p16 tubes are true 8 inch tubes the service manual i have is the wrong one for my tv(samsung makes it hard to get)
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Sun Jul 07, 2013 6:57 am Post subject: |
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Buy some housings and lenses if you need to, should be pretty easy.
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the big E
Joined: 20 Apr 2013
Posts: 1928
Location: speedwell Tn.
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| Posted: Sun Jul 07, 2013 7:02 am Post subject: |
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| CasetheCorvetteman wrote: | | Buy some housings and lenses if you need to, should be pretty easy. |
I could fit the ac housings from the projector in the tv chassis mount with a little mod to the mount I know I would need different lens
The ones I have from the tv are HD 10 but are for lc optics and are short throw lens common in projection tvs
Given I have seen not ac and lc optics on my big screen a screen this small I don't think the optics type would matter(or would it?)
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blue_z
Joined: 27 Apr 2006
Posts: 63
Location: So Calif
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| Posted: Mon Jul 08, 2013 12:01 am Post subject: |
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| the big E wrote: | | the cabinet is amazing as it is solid wood(literally and is heavy to boot)) |
It's highly unlikely that this cabinet is actually made out of "solid wood", unless it was custom fabricated for some wealthy patron.
A large enclosure made of solid wood that has to house heat-producing electronics is difficult to build. Hardwood plywood is a far more practical material than solid wood. A cabinet does not have to be made from solid wood to look nice.
BTW weight is not an indicator of quality. MDF is made of sawdust and glue, and typically weighs more than similar dimensioned solid wood or plywood.
Regards
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the big E
Joined: 20 Apr 2013
Posts: 1928
Location: speedwell Tn.
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| Posted: Mon Jul 08, 2013 12:07 am Post subject: |
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| blue_z wrote: | | the big E wrote: | | the cabinet is amazing as it is solid wood(literally and is heavy to boot)) |
It's highly unlikely that this cabinet is actually made out of "solid wood", unless it was custom fabricated for some wealthy patron.
A large enclosure made of solid wood that has to house heat-producing electronics is difficult to build. Hardwood plywood is a far more practical material than solid wood. A cabinet does not have to be made from solid wood to look nice.
BTW weight is not an indicator of quality. MDF is made of sawdust and glue, and typically weighs more than similar dimensioned solid wood or plywood.
Regards |
The back isn't real wood not real sure on the sides and top but it looks great even though its heavy(even without the electronics)
Anybody got any suggestions on which lens I can use for this setup so I can keep the ac lens setup of the projector?
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crt king of black
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blue_z
Joined: 27 Apr 2006
Posts: 63
Location: So Calif
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| Posted: Mon Jul 08, 2013 12:23 am Post subject: |
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| the big E wrote: | | The back isn't real wood not real sure on the sides and top but it looks great even though its heavy(even without the electronics) |
Every mass-produced TV I've seen in the past 40 years had a plastic or vinyl-over-particle board cabinet. I've read about a few top-of-line console TVs that had actual wood-veneer (probably over particle board) cabinets.
| Quote: | | Anybody got any suggestions on which lens I can use for this setup so I can keep the ac lens setup of the projector? |
Didn't Case recommend that you stick to the original lenses (or very similar from a rear PJ) so that you get the correct short throw? I.E. I got the impression from what he wrote that anything from a front PJ is going to have too long a throw.
Regards
BTW I was helping setup a rear PJ the other week, and finally understood why some people hate rear projection. On bright scenes, there was a hot spot that was a bit like looking into the bulb (there really was a bulb since it was a digital PJ).
In other words you might want to do a quick & dirty trial setup before you invest too much effort into this project.
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the big E
Joined: 20 Apr 2013
Posts: 1928
Location: speedwell Tn.
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| Posted: Mon Jul 08, 2013 12:33 am Post subject: |
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| blue_z wrote: | | the big E wrote: | | The back isn't real wood not real sure on the sides and top but it looks great even though its heavy(even without the electronics) |
Every mass-produced TV I've seen in the past 40 years had a plastic or vinyl-over-particle board cabinet. I've read about a few top-of-line console TVs that had actual wood-veneer (probably over particle board) cabinets.
| Quote: | | Anybody got any suggestions on which lens I can use for this setup so I can keep the ac lens setup of the projector? |
Didn't Case recommend that you stick to the original lenses (or very similar from a rear PJ) so that you get the correct short throw? I.E. I got the impression from what he wrote that anything from a front PJ is going to have too long a throw.
Regards |
It looks like wood-vaneer
The lens the tv had was for lc optics not ac optics so I don't know if they will (may try them sometime for the heck of it)
But the tv was made in the late 80's and the only plastic is the screen and bezal and a supporting peice in the back for the circuit board the main body is not plastic(my samsung projection tv is mostly plastic not this beast)
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crt king of black
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mx83toy
Joined: 14 Dec 2012
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the big E
Joined: 20 Apr 2013
Posts: 1928
Location: speedwell Tn.
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| Posted: Mon Jul 08, 2013 5:58 am Post subject: |
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Ha ha  its not THAT old I think the date said 87 or 84 not sure but it is older then me for sure(I am 25)
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CasetheCorvetteman
Joined: 09 Nov 2008
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Location: Australia
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| Posted: Tue Jul 09, 2013 7:55 am Post subject: |
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The original lenses or something else short throw are a must, youll never get it focused any other way, and itll all likely sit higher in the chassis than the original tubes cause the 07MS tubes will almost certainly be longer.
I have seen 2 models of rear projection TVs sold here in the mid to late 90s that were fitted with AC lenses, however they were very small, and with a single adjustment. Very sh*t picture compared to all the others ive seen and opened up. They were very cheap here compared to other sets, however they had analog focus with the pots mounted at the rear. Made by General Electric, or that is the badge they wore.
The only hot spotting i saw on the Panasonic GAOO TVs was in bright scenes when the contrast was set too high.
The Panasonic GAOO sets were all plastic and had a steel frame where the tubes mounted. All the others i have seen were particle board, in alot of cases with a plastic shell over that, the the case of Pioneer and Toshiba the back panel was masonite.
There really is no two ways about this, if youre going to attempt it, you will need to use the LC housings and the short throw lenses. The projector lenses are not designed with short range in mind, and their physical size will ensure that they are WAY too close to the mirror to be of any use. LC will make a massive difference in rear projection.
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the big E
Joined: 20 Apr 2013
Posts: 1928
Location: speedwell Tn.
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| Posted: Tue Jul 09, 2013 3:14 pm Post subject: |
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| CasetheCorvetteman wrote: | The original lenses or something else short throw are a must, youll never get it focused any other way, and itll all likely sit higher in the chassis than the original tubes cause the 07MS tubes will almost certainly be longer.
I have seen 2 models of rear projection TVs sold here in the mid to late 90s that were fitted with AC lenses, however they were very small, and with a single adjustment. Very sh*t picture compared to all the others ive seen and opened up. They were very cheap here compared to other sets, however they had analog focus with the pots mounted at the rear. Made by General Electric, or that is the badge they wore.
The only hot spotting i saw on the Panasonic GAOO TVs was in bright scenes when the contrast was set too high.
The Panasonic GAOO sets were all plastic and had a steel frame where the tubes mounted. All the others i have seen were particle board, in alot of cases with a plastic shell over that, the the case of Pioneer and Toshiba the back panel was masonite.
There really is no two ways about this, if youre going to attempt it, you will need to use the LC housings and the short throw lenses. The projector lenses are not designed with short range in mind, and their physical size will ensure that they are WAY too close to the mirror to be of any use. LC will make a massive difference in rear projection. |
I am going to do some measuring but I don't think the tubes will work with the tvs mount plate
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Wed Jul 10, 2013 1:24 am Post subject: |
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Modify the plate.
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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: Wed Jul 10, 2013 2:56 am Post subject: |
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Retro box... is that what the kids are now calling when their girlfriend is at least 10 years older than they are?
(sorry, couldn't resist!)
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