A 20v wall wart type power supply would work, although if you want to mount it in the PC case a DC-DC converter would be a better choice. So, use the 20v wall wart to get the 20v, then once everything is working and you've figured out how to get it mounted make a DC-DC converter. It will provide cleaner voltage and run off your PSU. As for the construction of the DC-DC converter, I have no idea.
for those who are wondering, here is where you can find a vesa bus using an old graphics card and an hour of ascii art: Code: ───┐ │ │ ├─────────────────────────────────────────────────────────┐ ┌┤ ┌┐ ............. O ┌───┐ ┌───┐ ┌───┐ ┌───┐ ┌───────┐ │ └┤ └┘ ............. ┌┐ │ │ │ │ │ │ │ │ │ │ │ ┌─┼──┐ ^VESA BUS^ ││ │ │ │ │ │ │ │ │ │ │O │ │V│ │ ┌───┐ └┘ │ │ │ │ │ │ │ │ └───────┘ │ │G│ │ │ │ │ │ │ │ │ │ │ │ ┌───────┐ │ │A│ │ │ │ └───┘ └───┘ └───┘ └───┘ │ │ │ └─┼──┘ └───┘ ┌┐ │ │ │ ┌┤ ┌───┐ └┘┌──────────┐ └───────┘ │ └┤ │ │ │ │ ┌───────┐O │ │ O ┌──┐ │ │ ┌┐│ │ │ │ │ │ └──┘ └───┘ └┘│ GPU │ │ │ │ s│ ┌┐ ┌┐ ┌┐ ┌┐ │ │ └───────┘ │ v├──┐ └┘ ││ ├┤ ││ ┌┐│ │ ┌───────┐ │ i│ │ ┌┼┘ ┌──┐ └┘ └┘ └┘│ │ │ │ │ d│ │ └┘ │ │┌┐┌┐ └──────────┘┌┐ │ │O │ e├──┘ O └──┘└┘└┘ └┘ └───────┘ │ o│ ┌─────────────────┬─────┬┬────────────────┬┬──┬───────┘ │ │ ││││││││││││││││││││││││││ └─┐ ├───┘ └┴┴┴┴┴┘└┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┘└────┘ │ │ │ │ As you can see, the vesa bus is a 13x2 pin header *usually* at the top-left of the card (please feel free to use this drawing for your own use)
Whoa, you have a lot of free time. Very good drawing. You could have just taken a picture of one, however
uhm.. think I will have to wait till there is a short & clear how2... it would take me moth to get this thread
i dont think ther can be a clear step-by-step guide, as all screens are different, they all need different pin-outs and voltages to work. as soon as i can get a broken laptop ill try this!
i have read this thread a few time, and i have found a LCD , but after much googling i have been unable to find a datasheet. the LCD is modeL number LM-BF53-22NTK. if anyone has any more info on this, it would be much apreachated.
This Will Work As Soon As I Can Power My Plasma Screen I have an old P70 laptop plasma display that can connect directly to the 26pin spot on my old voodoo video card. The only problem is that i can't get the damn screen to power up. I have it connected to the P70 powersupply because i read somewhere that you need it to provide the high voltages for the screen. Can anyone help me out? Is there another way to power this plasma screen?
more details please (screen make, model number, voltage required etc) when you say the laptop power supply, do you mean the brick that plugs into the mains and the back of the laptop? BTW, welcome to the forums
I have part numbers for this thing. It is ancient lol. The display is monochrome (P/N: 38F5943). The powersupply is actually similar to a desktops one. Its P\N is 38F4745. As for the voltage required by the plasma display i am not sure what it requires . I read somewhere that this thing runs on high voltages which the powersupply can provide. I thought i couldn't get the screen to power on because the powersupply needed to be connected to the old laptop motherboard or something before it powers on the screen. (I tried this but still no luck) However, I have no idea how to put this thing back together because there are tons of ground wires that i have no clue where to attach them lol. I hope this helps. I will post some pictures as soon as i get my camera working.
LOL yes i am posting yet again lol I found this bit from a website about the display - seems it needs between 70 - 100V DC The orange screen is commonly called 'Plasma Display' (a hot word ;-) ) but the correct technical term is 'Gas Discharge Display'. The principle of function is in brief that you have a cell with a luminous gas between two electrodes for each dot (or pixel). The one electrode is Ground, to the other is a voltage applied between 70 and 100VDC. The gas in the cell is caused by this voltage to emit light. You know these lights on the front of your oven in the kitchen ? same principle but much smaller and many of them combined in a large circuit. The controller circuits are soldered directly to the back of the screen. Both - the gas-discharge element and the controller circuits give up some heat which is neither dangerous nor unnormal. That's all. These screens are a high-voltage technology unlike to LCD-screens (these black on whites as used in most modern laptops) - these LCDs are low-voltage / indirect lighting technologies - however the lamp to backlight them is a high-voltage again. The plasma-display is a high voltage / direct lighting screen, which needs no backlight. The main disadvantage: some higher power-consumption, normally not possible to feed it from batteries, somewhat complicated shading / contrast control. Main advantage: rigid, temperature independent (while self-heating ), not very much pressure sensitive. Makes a good hand-warmer in cold times .... ! http://www.walshcomptech.com/ohlandl/8573/8573.html (source)
By the way, the plasma panel is a M a t s u s h i t a electric type MD480T640PG4, P/N 38F4744. made in week 06,1990 (i put the spaces between the letters because it was getting censored LOL )
