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Modding PSONE LCD Mod

Discussion in 'Article Discussion' started by macroman, 6 Jul 2004.

  1. MrWillyWonka

    MrWillyWonka Chocolate computers galore!

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    Thanks ag3nt_7, user0001 and xmas111, it sort of seems what I need, but how do I connect the psone screen to the vga port? Do I still have to plug in the dummy and take it out to plug in the psone screen when Windows loads?
     
  2. ag3nt_7

    ag3nt_7 What's a Dremel?

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    My knowledge is that the D-Sub connector your using to plug the psone screen becomes the dummy too. I don't think that those resistors will cause problems when outputting the signal to your screen. It just makes your BIOS "THINK" that a signal is present on startup, meaning that when windows loads it will have detected a Plug and Play monitor instead of leaving you with a blank screen because it thinks theres no monitor.

    However i could be totally wrong, so if anyone knows better please tell ans I am planning on building the dummy plug soon.
     
  3. Nexxo

    Nexxo * Prefab Sprout – The King of Rock 'n' Roll

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  4. MrWillyWonka

    MrWillyWonka Chocolate computers galore!

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    I was considering putting the resistor onto the actual wire to the Psone screen itself.

    But can anyone actually confirm it will not affect signal quality (or at least, not noticably)?

    I'm off to maplins later to get some bits and bobs, so this will be on my shopping list too.
     
  5. xmas111

    xmas111 What's a Dremel?

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    I plug the dummy in while the machine boots up.... then once windows is running I remove the dummy and plug in the PSONE.

    I would be interested too in knowing if putting the resistors on the actual PSONE connector would work.
     
  6. vts

    vts What's a Dremel?

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    is there a list of pci vga cards that this mod will work with?

    and i'm talking exact makes and models, i recently picked up a matrox 4meg pci card off ebay, for like £3.70 (inc a copy of ubuntu linux...which was nice)
    but have not yet tried it, apparently its been tested, but i dont know wether it'll do what i need it to, ie have csync.
     
  7. Dekode

    Dekode What's a Dremel?

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    I've just wired up my VGA plug with the wires I need, but the PS1 LCD I have is pal, do I need to add any more wires or something? I've got told I need to for PAL ?


    [​IMG]

    Thats the wiring shematic i've used.

    [​IMG]
     
  8. ElThomsono

    ElThomsono Multimodder

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    Looks good to me :thumb:

    Some PAL screens won't switch on without the DCC connected to 5v, but that can easily be added at the screen end of things.
     
  9. MrWillyWonka

    MrWillyWonka Chocolate computers galore!

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    New Zealand uses PAL, thus meaning you need to wire the DCC to a power source to activate the screen. It's simple, start reading post 490 onwards on this page.

    Now, can anyone confirm that using 3 75Ohm resistors on the psone wires to the VGA will actually work? I have the resistors, I don't want to risk damaging anything.
     
  10. Dekode

    Dekode What's a Dremel?

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    Thanks Mr Wonka, please check yours pm :) :confused:
     
  11. ElThomsono

    ElThomsono Multimodder

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    As a side note, what happened to this thread?

    It used to have a lot more pages in it, and some of the close up pictures I posted have gone.

    I don't think I posted anything that'd be moderated, was it just to make things more readable?
     
  12. Dekode

    Dekode What's a Dremel?

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    So with the DCC+ Which number wire on the VGA side ?

    And I just wire that to my 5v+ line on my psu?

    Also my 800xl, has two LCD screen ports, if i used a lcd -> vga adapter for the ps1 screen, i assume it should work fine?
     
  13. MrWillyWonka

    MrWillyWonka Chocolate computers galore!

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    You're absolutly right, one of the vital pictures for wiring the DCC wire to the PCB Board is missing.

    EDIT: No, I'm blind, it's still there!

    Connect the wire on the very left of the right connector:
    [​IMG]

    And solder it to the point at the bottom right corner:

    [​IMG]

    Thanks to ElThomsono for these pics!

    And not to the 5V!

    EDIT 2: May I suggest to a mod that these diagrams be included in the actual article, as it is required for PAL users.
     
    Last edited: 7 Dec 2005
  14. Dekode

    Dekode What's a Dremel?

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    I still don't see the wire in that pic :duh:

    So the 5v+ from where?


    Someone told me to do this with a PS1 PAL LCD

    solder/join the pins - VGA plug side:

    9 - > 10
    11 -> 8 7 6
    4 -> 8 7 6

    Would that work?
     
    Last edited: 7 Dec 2005
  15. MrWillyWonka

    MrWillyWonka Chocolate computers galore!

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    I don't know, but the easiest way is to use what I suggested. Read the post again, it makes perfect sense!

    Cut the left most wire on the right connector, and solder this to where you see a white cable soldered onto the pcb board on the bottom right corner!
     
  16. Dekode

    Dekode What's a Dremel?

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    Yup, ive got it cheers.

    Also I can use a lcd - > Vga adapter and it will work fine ?

    Eg.

    X800XL - > VGA Adapter - > Male VGA plug wired to PS1 LCD
     
  17. Thos

    Thos What's a Dremel?

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    Hi all!
    First off, I'd like to say that I'm a brand new member of bit-tech, but I have been following this thread a lot recently because I also got one of the psone lcd's, and am trying this very mod. I have actually even gotten it to work, but with some serious limitations. I was hoping that maybe someone on here could help. So here goes...
    Quick background: I am using an nvidia card (I'll have to check which one exactly when I get back from work tonight). It is almost always on and always has an svideo connection to the tv, and I don't want to disconnect that. I read about how nvidia cards lack the csync I need to work it, but the hsync+vsync->csync circuit I made didn't work at all, and only gave me a black (but backlit) screen. I then bought a matrox mystique (1064sg), and last night I had the lcd running almost perfectly on the mystique with serio's pin wiring:
    VGA pin -- PSX pin
    1 -- 11
    2 -- 12
    3 -- 9
    6,7,8 -- 8
    9 -- 10
    13 -- 5
    Only with the mystique was I able to get the comp to recognize the lcd, but I didn't know how to get clone mode to work. But that's not really the problem. The bad part is that when I try to playback beyondtv video, it simply can't do it. CPU usage goes up to 100%, and I probably get about 0.5 fps. Truly horrible. I don't want to spend a whole lot more money on this project buying another pci card, so I just wanted to know if there are any success stories out there with nvidia cards, perhaps simply wiring hsync and vsync together to csync? Or maybe there are some further suggestions?
    Thanks in advance (and for reading this whole thing)!

    -----
    Edit: I guess I should've read teepee542's post a little more closely. Looks like he was able to get it to work on an nvidia. Hopefully that'll be true with the card I have in my comp. Anyone else get it to work? Anyone get monitor detection with an nvidia?

    Edit2: My card is a gforce fx5200 ultra...
     
    Last edited: 8 Dec 2005
  18. ElThomsono

    ElThomsono Multimodder

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    That's what got me, I'm sure I posted a better picture (albiet of the same wiring) later on. It was closer up and it showed the full wire, instead of dropping off the bottom of the photo. I'll try and find it...

    Found it :)

    [​IMG]

    Is that better?
     
    Last edited: 7 Dec 2005
  19. vts

    vts What's a Dremel?

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    yup, thanks thats helpful to all pal users :)


    and yeah i agree with the post that said you should add this bit to the guide

    nice one!

    VashTheStampede
     
  20. ag3nt_7

    ag3nt_7 What's a Dremel?

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    Well i tried the DCC+ wiring to the LCD circuit board, that did nothing but leave me with a black screen. So I unsoldered it and put it back where it should have been and it was all working again, apparenty it doesnt work for all PAL screens.

    Mysteriously my Matrox Mystique finally gave me a signal on my LCD screen. I have CSync enabled but I can't get a good picture at all, I can't even get a stable picture, all I can get is a partially visible picture that rolls a lot. Does anyone know if this could be a problem with my wiring, or simply not enough fiddling with powerstrip?

    I have tried to get a picture both with and without the HSync and VSync pins on the VGA plug soldered together to make Csync, but i get similar results every time.
     
    Last edited: 9 Dec 2005
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