| troycastor5 |
Hello all
This will be my first and hopefully not the last post to this great forum
Im fairly new to this concept considering my brother pointed me to diy project on tom's hardware website about a month ago. i was immediately hooked and maybe a little to enthusiastic considering i bought, stripped and setup a 3m 9550 and a benq fp557s v2 in a month(steps follow later).
This is me putting my two cents in.....
Following is a step by step guide of my setup and would greatly appreciate any feedback or comments
Before i start i would like to apologize for the quality of pics (especially the latter ones). I took em using my nokia 3650 cam phone in absence of a digi cam that i didn't have at the time of build. |
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| troycastor5 |
first off unscrew the three screws in the bottom of the rear of the lcd plus the two screws on the stand. Then carefully remove the back side by prying it off starting from the bottom. I used butter knife, flat-head screw driver with electric tape on it as to not scratch the surface.
This part probably was the toughest for me since i was trying not to damage the exterior of the lcd.
Note: in the picture you see a small piece being removed from the stand. This wasNOT necessary. When the back part comes off, the stand comes of with it. |
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| troycastor5 |
| once the back cover is removed, disconnect the wire that operates the controllers by pulling it from one side and then the other. |
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| troycastor5 |
now that the front bezel is removed you can begin the actual work.
remove the two thin metal sheets shown in the picture by sliding them the path of the arrows shown |
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| troycastor5 |
this should expose:
1. two wires going into the side of the metal frame. These wires are connecting the back light to the circuit boards. remove them.
2. These two tape wires (dont know what they are called) are removed by lifting the black stripe of plastic and pulling. BE GENTLE. these babies are extremely delicate. anyone who has modded an xbox nows what i'm talking about. |
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| troycastor5 |
| unhook the sides of the metal frame from the body and pull off |
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| troycastor5 |
Now what i found is that the metal frame acts as a nice housing for the circuit boards. Later you will see how i attached it to my ohp making life alot easier
Next:
remove the tapes from the body, and unscrew the 3 tiny screws |
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| troycastor5 |
Now remove the metal part you just untaped and unscrewed which exposes the pcb's
next:
There are two screws that need to be removed before you can uncover the back light and screen. This part probably took some time because the wires that connect the backlight were in the way. There is an upside down hook that holds the wires in place, so what i did is with the help of another person, i gently lifted up the hooks and slid the wires thru. Remove the two screws |
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| troycastor5 |
| it should look something like this. |
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| troycastor5 |
almost there.....
Unhinge the sides and remove the back light which exposes the lcd screen |
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| troycastor5 |
| from the top: metal frame housing the circuit boards, lcd screen, back light |
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| Tekko |
| Ouch those flat wires between the lcd glass and pcb looks like they will break very easy, be very careful with the next step. Save all parts if you want to reassamble the screen sometime in the future. |
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| troycastor5 |
That's it for the stripping part.
Now i placed the screen on the projector. Now you can see why the metal housing with the cb's is so easily used without dismantling it.
Connect all the wires and fire it up. |
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| troycastor5 |
3.......2...........1.............Action
used a pedestal fan from my room for now. At medium speed you can't even hear it running
that is gladiator being projected on a off-white wall. Haven't adjusted the settings yet and my graphing card is like 3 years old, geforce2 i think :cannotbe: |
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| troycastor5 |
| another look at gladiator.... |
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| Tekko |
| You need to put something on the lcd so you donīt get alot of extra light shining through, maybe a metal plate with a hole cut just for the picture viewing area, would be something to secure the pcb in too. |
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| troycastor5 |
thx for the suggestion tekko. i have tapped the metal frame to the ohp for now. i have given the wires enough slack so that they are bending naturally.
i have a question tho, a few actually:
1. can those flat wires get damaged from heat from ohp. i have got spacers under the screen but parts of the flat wires are exposed completely.
2. i have substantial light coming from the ohp. how do i reduce that? i was thinking of using black cotton cloth to cover up the fan vents where the bulk of the light seems to be coming from but not sure if that will overheat the ohp.
3. if you look at text, the right half seems to be "blurrier" then the left half of the projected image ???? |
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| corryn00 |
where did you find that monitor and howmuch you pay for it?
Gordon |
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| thebern |
Great post. I am thinking about buying the same LCD but I
am leaning towards the 3M 9800 projector. I believe it is similiar
to the 9550 except for higher lumens. How large is your projected
image? How far away from the screen can you place the projector
to get say an 80" screen? |
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| troycastor5 |
| quote: | | where did you find that monitor and howmuch you pay for it? |
Got it at tigerdirect.com for $230.
| quote: | How large is your projected
image? How far away from the screen can you place the projector
to get say an 80" screen? |
do u mean 80" diagonal? because the setup is around 7 ft away and its well over 100" diag |
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| thebern |
7ft from the screen. Does the OHP block your view of the
screen at all being in the center of the screen. I guess you
can not sit directely center of the screen because the OHP
will be in the way??? |
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| troycastor5 |
right now that is the case but im hoping to change the config around soon. The room it is in now is kind of small, but soon i will move it in my room. More room there and i am hoping to make a projection screen i will hang there as well but not anytime soon. Funds limited cause school is starting soon.
what i do want to do is work on the clarity right now. Correct me if im wrong but all ohp's have fresnel's right. some post i have read say they had to get them and then split em and what not.
Is it located under the glass screen of the ohp? Are two fresnel's sandwiching an lcd betten then one whether it is above of below the lcd? Can somebody point me to where i can get more info on this subject. |
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| EENERD |
I just purchased a 3M 9550 also and I am trying to decide whether to use a 14 or 15 inch monitor.
How much, if any, is cut off from the LCD screen width (12 inch width) due to the 11.25 inch aperture on the OHP? Did you modify your OHP? If I get a 15 inch I will probably go with the Samsung 512N, this is preferable since it looks like from other comments that this is fairly easy to disassemble. The 14 inch monitors I have been considering are generics with no disassembly info.
How do you like the picture quality so far?
Thanks |
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| troycastor5 |
About an inch is cut off from allsides. Doesn't effect much when you watch letterbox movies. I think the way to get that inch back is to put the fresnel above the lcd but i am not sure if that is true.
As far as buying a samsung 512n, i checked it out in action at best buy before i bought my lcd and i didn't like it. Doesn't seem it is ideal for multimedia which is mainly what i use mine for. I thought it was too dark and the contrast wasn't that impressive even when adjusted higher. In side by side comparison I liked the hp 152 and sony's sdm-hs53 over the samsung and my benq is pretty similar to hp and sony's quality. Price wise i would say you save maybe $30-$40 but the quality loss isn't justified. But that is just me.....
So far the picture quality is good.. but i still want to get a better graphics card and try the different fresnel lens positions....Just been a little busy with school and work. |
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| tez |
| I just stripped one of these and my job was made considerably easier after reading this post. Just wanted to say thank you, your notes were very helpful ! |
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| Bittermormon |
| I too just utilized your article. It took me maybe 40 min to strip this monitor, thanks so much. I can't wait to get my OHP fired up tomorrow after work. :) |
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