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PostPosted: Tue May 16, 2006 4:17 
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now on that schematic where would the 5v line go since it is bbeing grounded to her, how will I get the power from the molex connector? unless Im reading something completely wrong.


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PostPosted: Tue May 16, 2006 4:20 
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nevermind i see it now, the 5v ilne hooks into this board and runs out through the board, the other line goes directly to the molex connector. correct me if im wrong please dont want to fry this lcd, :D


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PostPosted: Tue May 16, 2006 11:01 
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Syn Weaver wrote:
nevermind i see it now, the 5v ilne hooks into this board and runs out through the board, the other line goes directly to the molex connector. correct me if im wrong please dont want to fry this lcd, :D

I'm not entirely sure what you are asking/talking about??? Are you talking about connecting power to the LCD from a molex connector in your PC...?


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PostPosted: Tue May 16, 2006 14:41 
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yeah that is exactly what Im talking about. Or would that not be possible? see I have external molex conectors on the back of my PC to hook things like that up and Ive seen that several people have done it with different displays. basically the 5v line connects to the 5v in on the breadboard and exits at -12v to -15 volt which runs to the 5v or the 12v molex wire and the second wire that runs from the lcd board itself for the loop basically runs to the ground for that particular volt line. Am I right on that or completely thrown off?


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PostPosted: Tue May 16, 2006 14:43 
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what ill do since im back at work is draw up what Im talking about with the schematic image I have posted here and add the other two lines to oint out exactly what Im talking about if you dont understand.


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PostPosted: Tue May 16, 2006 22:56 
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I know what your talking about with the external access molex connectors on the back of the PC as I have them on mine and utilize them to power external stuff. The other stuff you are talking about.....not quite sure what you are referring to/getting at. Maybe a picture would be better, so do draw one up when you get a chance. Thanks.


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PostPosted: Wed May 17, 2006 2:22 
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Image

this is what im talking about connecting pins 3,10 ,and 19 to the +5v in connection.

And then running Pin 4 directly to the molex connector to be plugged into the back of the computer. Which Pin 4 is a negative voltage connection according to the data book.


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PostPosted: Wed May 17, 2006 10:53 
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Have you applied power to your LCD yet and confirmed there is already a -8VDC there? If so, you don't even need the MAX63X IC's at all, as the negative voltage is already on board. Also, you wouldn't want to put that pin 4 (if it is indeed -8VDC) on to the ground pin of the Molex and plug it into your PC power supply.....because now everything in your PC will be referenced to -8VDC....not 0VDC like it's supposed to be.


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PostPosted: Wed May 17, 2006 11:23 
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no i havent gotten the power applied yet since I am still waiting on it to come in, Should be sometime today or tomorrow hopefully. When I do get it I will definately check with a multimeter before connecting anything


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PostPosted: Wed May 17, 2006 11:29 
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well apparantly I am wrong on that he just sent them off yesterday so I wont be getting them til friday or Saturday....ermmm......Im being impatient!!! Well the reason Im going through all of this now is so I know what to hook up when it gets here that way I can test all of the boardsa and leave feedback promptly for this ebayer. But he is taking a while.....Anywho so lets say that it is a -8v and the other is +5v how do we connect it through a molex plug?


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PostPosted: Wed May 17, 2006 13:38 
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Syn Weaver wrote:
.....Anywho so lets say that it is a -8v and the other is +5v how do we connect it through a molex plug?


+5 (VDD pin 3) would go to the +5VDC (red) on the molex, Ground (VSS, pins 1 and 2) can go to the ground on your molex's 2 center pins (both are black).


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PostPosted: Wed May 17, 2006 13:46 
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alrioght kewl illc heck that out once it gets here then and we will see what happens.


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PostPosted: Wed May 17, 2006 13:47 
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so pin 4 wouldnt hook up anywhere at all then? sorry should have psted that with last comment


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PostPosted: Wed May 17, 2006 14:08 
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It all depends if it's internally generated or not. If it's not internally generated (which in all probability isn't) then the output of the MAX636/7 would feed that pin. You would power the MAX636/7 with the same 5vdc/ground you used to power the logic on the LCD.


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PostPosted: Wed May 17, 2006 14:41 
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okay, I dont think Im understanding that too well. I contacted Shelly to see if they can give me a diagram specifically for ths LCD because I noticed on the file I was sent by the seller is for a Sharp LCD and Im not for sure if it is going to be the exact same information or not. So Ill find out from Shelly soon hopefully. Next thing once I go ahead and find htis out I might need an image done to show me exactly how to run those wires. because the way im looking at it and I dont know if this is accurate or not is running pin 4 from the lcd to the max636/7 circuit out put and the 5v line from the lcd to the inpout on the max636/7 input.....Dont know how accurate that is though. I do see on the pictures that the seller took that a red and black line are already comming off of the LCD to what looks like a 3 pin molex, which might be used to power it up itself......dont know for sure though, Ill get the address of that ebay item once I get home because again Ihave manage to make it to work. Off for the next 2 days though so I should have plenty of time to look over alot of this without distraction.


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