How to run a psone screen at 12v

MaDnEsS · Post by **MaDnEsS** » Wed Jan 18, 2006 4:58 pm

alright now that it works i will post everthing i did in pics( for this you first will have needed to complete the LED mod)

first things firt remove power to baclight(its not needed anymore)

1.Replace it with this one 5v dc/ dc converter which i will post a link to its at the top of the screen board on the front) ON the front its a lot easyer to solder everything if the pins are facing the back.

Pic from front

pic from the back(you will have to scatch a place on the back to support the dc-dc, it also give you a place to solder)

2. to prevent your screen from frying at 12v you need to solder a resistor onto the dc dc even so it makes it a 7.4-5v dc dc so basicly your setting it up so you have the 12v go through the dc/dc right to the screen like so. than wire it in seiries with whatever else your powering with 12v.

3.Waring i suges to you you put in a fuse so in case you did something wrong you will not fry everything. one last thing Solder everthing exactly the way i did in my pic.

sniper_spike · Post by **sniper_spike** » Wed Jan 18, 2006 5:09 pm

Sorry Madness, but I don't really see a point to this thread, it's pretty obvious to anybody on how to run it with 12V. Plus it would be much simpler to just run the DCDC directly after the battery.

MaDnEsS · Post by **MaDnEsS** » Wed Jan 18, 2006 5:10 pm

Never seen any body else run it at 12v so i thought i would post about it and the dont make 7.5 dc/dc stupid

sniper_spike · Post by **sniper_spike** » Wed Jan 18, 2006 5:14 pm

First nobody runs the screen at 12Vs because those batteries generally have a lower capacity than, say, 7.2V batterys. They also don't do it to save from having to get a voltage regulator.

Secondly you don't need exactly 7.5V, 7.2-9V will do just fine. And have you ever heard of an adjustable switching regulator?

MaDnEsS · Post by **MaDnEsS** » Wed Jan 18, 2006 5:19 pm

i know i didnt say that i said it will give you about 7.4-5v so shut up

sniper_spike · Post by **sniper_spike** » Wed Jan 18, 2006 5:20 pm

Oh rly?

MaDnEsS wrote:Never seen any body else run it at 12v so i thought i would post about it and the dont make 7.5 dc/dc stupid

Post by **gannon** » Wed Jan 18, 2006 5:26 pm

sorry to say, but sniper_spike, you're being an idiot. Many consoles (including the GC and DC) require a 12V min. for operation.

MaDnEsS · Post by **MaDnEsS** » Wed Jan 18, 2006 5:26 pm

Read the first post/\ and i was saying they dont make a dc dc that gives you a voltage you can run the screen at

sniper_spike · Post by **sniper_spike** » Wed Jan 18, 2006 5:32 pm

I never said anything about consoles, simply the screen. But then if your running both on one 12V battery, you could simply have two outputs from it, one to a DCDC to the screen, and the other to the console. So going back to one of my points, it would be easier to just run a DCDC off the battery instead of on the screen. There's a bunch of adjustable DCDC's on TI, do a search.

minkster · Post by **minkster** » Wed Jan 18, 2006 5:53 pm

MaDnEss what system are you doing the 12v screen mod for anyway?

MaDnEsS · Post by **MaDnEsS** » Wed Jan 18, 2006 6:16 pm

the n64

Post by **marshallh** » Wed Jan 18, 2006 6:25 pm

Pray tell, why would you want to run a N64 off 12v? You do know the 7805 in it runs just fine off 7.2+v?

MaDnEsS · Post by **MaDnEsS** » Wed Jan 18, 2006 6:42 pm

i know that but i wasnt satisfied with 3hrs so i bumed it up to 12v so i could run it for 10hrs i turnd it on at 10:30 went to bed woke up at 8:45 still running

Post by **gannon** » Wed Jan 18, 2006 6:49 pm

umm... how does increasing the voltage realy increase playtime? Maybe it'd save some voltage in the dc-dc converter to the 3V line, but it'd also burn up more heat on the 7805 to the 5V line (unless you replaced that with a dc-dc converter too), but even so, it's not as good as just using the extra batteries in parallel.

x24 · Post by **x24** » Wed Jan 18, 2006 8:52 pm

marshallh wrote:Pray tell, why would you want to run a N64 off 12v? You do know the 7805 in it runs just fine off 7.2+v?

woah woah woah.. explain here (or pm).. before I get soldering.. please