how to power the screen

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markus
Posts: 130
Joined: Sun May 10, 2009 7:29 pm
PSN Username: ikramtuht

how to power the screen

Post by markus »

Will this be all I'll need to power my psone screen and not fry it?
http://img442.imageshack.us/img442/4760/hni0018.jpg" onclick="window.open(this.href);return false;
Here's the back: on the bottom right contact, there was a power in from the battery/switch thing, but it broke off. no problem, ill just solder it back in place
http://img443.imageshack.us/img443/8103/hni0019.jpg" onclick="window.open(this.href);return false;
Top wire: ground. Bottom wire: +7.5 volts to screen
Also, one last question, does the ground go to the screen or the nes?
Thanks in advance! :?
Markus
rikitheshadow
Posts: 315
Joined: Fri May 09, 2008 12:15 am

Re: how to power the screen

Post by rikitheshadow »

I'm correct in saying that your going with Ben's build from his book?
His build will not fry the screen, unless you soldered them improperly.
The only thing that could use room for improvement in Ben's Book is the resistor value for LED when using the LED mod that eleminates that power munching CCFL.

Screen Ground and NES ground need to be connected together. Regardless.
markus
Posts: 130
Joined: Sun May 10, 2009 7:29 pm
PSN Username: ikramtuht

Re: how to power the screen

Post by markus »

Ok, so to do that, id just solder some wire connecting both of them together? And yes, I am going after ben hecks design from his book. Which resistor would you use?
Markus
rikitheshadow
Posts: 315
Joined: Fri May 09, 2008 12:15 am

Re: how to power the screen

Post by rikitheshadow »

The resistor value, uhm I can't exaclty remember the best suggest value for the LEDs they where suggesting to use.

But ya, the ground coming from the NES and the ground coming from the screen should be connected together.
If you dont, any signals such as video and audio channels will be considered an open circuit and you would get no response from the screen.

The same exact principal as using batteries; you require both the Positive and Negative terminal to provide electricity to your device.
So the Video-In for example, is essentially the Postive terminal, as the ground is the Negative terminal.
markus
Posts: 130
Joined: Sun May 10, 2009 7:29 pm
PSN Username: ikramtuht

Re: how to power the screen

Post by markus »

:D Ok thanks sounds good. Oh, and it said to use a 10 ohm resistor.
Also, did you make any portables using bens design?
Markus
themadhacker
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Re: how to power the screen

Post by themadhacker »

don't use a 10 ohm resistor.

use somehing like 50-75 ohms instead.
rest in peace, Ronnie James Dio! \m/
markus
Posts: 130
Joined: Sun May 10, 2009 7:29 pm
PSN Username: ikramtuht

Re: how to power the screen

Post by markus »

Cool thanks! Umm what exactly does changing them do?
Markus
Metallica Man X
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Re: how to power the screen

Post by Metallica Man X »

Helps keep from frying the little lights, I believe :)
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markus
Posts: 130
Joined: Sun May 10, 2009 7:29 pm
PSN Username: ikramtuht

Re: how to power the screen

Post by markus »

:D k cool thanks.
Markus
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