I'm reviving the Minktendo...bum bum bummm

minkster · Post by **minkster** » Sun Aug 27, 2006 11:44 am

Ok I drew out a diagram and have everything connected the way I want to. Just so you all remember, I used the original NES board. I am currently going to use Ben's video amp from his book as shown:

The one problem I have is where would I hook up 7.5v to the PSone screen? I believe I need some kind of regulator. I'm using a 7805, but that only outputs 5v to the NES mobo. Would I need to use an LM317T? Or possibly replace the 220ohm resistor with one that outputs 7.5v? Thanks a lot-minkster

Klefmung · Post by **Klefmung** » Sun Aug 27, 2006 11:54 am

=D I know, I know.
Don't even use a regulator for the NES.
power the psone screen, and use a 7805 that is already in the screen.
For that, get a 7808, or you can use a lm317t. Or, just get a 7.2v battery.

minkster · Post by **minkster** » Sun Aug 27, 2006 12:02 pm

Oh yeah, I do have a 7.2v battery...I guess there will be no harm trying it out like that

So basically, If i wanted to use my 9.6v battery, I could hook it up to the PSone screen's 7805 and the voltages wont affect anything?

Klefmung · Post by **Klefmung** » Sun Aug 27, 2006 12:04 pm

No, you hook the 9.6er up to a regulator, put it into the psone screens main power in if you are gonna do it like that. I suggest the 7.2 though.

Klefmung · Post by **Klefmung** » Sun Aug 27, 2006 12:04 pm

minkster wrote:Oh yeah, I do have a 7.2v battery...I guess there will be no harm trying it out like that So basically, If i wanted to use my 9.6v battery, I could hook it up to the PSone screen's 7805 and the voltages wont affect anything?

Then, the 7805 on the psone screen board, power the NES with that.

edit: Whoops. I meant to edit my last post. >.< not make a new one. Sorry

minkster · Post by **minkster** » Sun Aug 27, 2006 1:28 pm

Oh ok, so if I were to hook it up to a 9.6v battery I have to hook it up to a regulator such as an LM317T and then to a 7805 (like the one on the PSone screen) in order for it to work.

I do want to know a little bit about the LM317T, like what each pin is such as ground, where to put the unregulated power, and which pin outputs the voltage. If I were to do this, do I need resistors to get the desired 7.2 volts?

But it I were to hook up a 7.2v battery, I don't even have to worry about adding any regulators to begin with correct? The reason I would rather do the above, is because the 7.2v battery is a Ni-Cd, but yet again I guess I could always buy an Ni-Mh.
Thanks for the help though

Klefmung · Post by **Klefmung** » Sun Aug 27, 2006 1:51 pm

want me to draw you some diagrams? =D

Harshboy · Post by **Harshboy** » Sun Aug 27, 2006 2:00 pm

If i understand this correctly.

For a 7.2 Volt Battery: Power screen by connecting red wire (+) to Pin 1 and the Black wire (-) to Pin 2. Then, on the 7805 on the PSOne Screen board, hook a wire to the Output pin, and the Ground pin. The Ouput pin is 5 volts (+) and the middle pin is Ground (-). Connect to the NES Accordingly.

For a 9.6 Volt Battery: Power screen by connecting red wire (+) to the input pin (+) of the 7805 and the Black wire (-) to the middle pin (-) of the 7805. Then attatch a second wire to the middle pin (-) and attach it to Pin 2 (-) on the PSone Screen. Attach a wire to the output pin (+) of the 7805 and attach it to Pin 1 (+) of the PSOne screen. Then, on the 7805 on the PSOne Screen board, hook a wire to the Output pin, and the Ground pin. The Ouput pin is 5 volts (+) and the middle pin is Ground (-). Connect to the NES Accordingly.

Simple, no?

Klefmung · Post by **Klefmung** » Sun Aug 27, 2006 2:13 pm

Well, yes, but you don't wanna hook the ground up to the output pin on the 7805.

Here is more of what I was thinking
hook power up to wires one and two coming off the right connector with wires on it (wire one being +, wire 2 being -)
Then hook the wire two up to the nes ground
Then all grounding needs are covered
and you can hook the output pin on the screen's 7805 to the system.

Turbo Tax 1.0 · Post by **Turbo Tax 1.0** » Sun Aug 27, 2006 2:18 pm

just hook the 7.2 volt battery straight up to the psone screen and you'll be fine no regulation required

minkster · Post by **minkster** » Sun Aug 27, 2006 3:37 pm

Alrighty, well I'm going to make a two diagrams that look nice and post it on here to make sure everything is correct, and I'm pretty positive I have mostly everything right. Never hurts to double check though

minkster · Post by **minkster** » Mon Aug 28, 2006 6:23 am

Argh, scanner isn't working...but I'm taking all the advice I can

I have another question. I have a PSone screen and I originally took out the transformer to do the LED mod, and to make a long story short..I thought the screen died, so I bought a new one and used the LCD for my SNESp. Now I basically have an LCD screen w/o the LED mod with a PCB without a transformer. Would I be able to hook it up and at least hear sound? At the moment I have no LED's so I'm fine with just testing sound.

Turbo Tax 1.0 · Post by **Turbo Tax 1.0** » Mon Aug 28, 2006 6:53 am

yeah, if you bridge the three headphone solderpads in the back

minkster · Post by **minkster** » Mon Aug 28, 2006 8:37 am

I've already had them soldered on the back, but now here is my diagram:

As you see, I don't have a connection to 7.5v in on the PSone screen board. So how should I alter my diagram? I hope I didn't complicate things too much

Turbo Tax 1.0 · Post by **Turbo Tax 1.0** » Mon Aug 28, 2006 8:44 am

add another wire from the unreg pin on the 7805 and wire it to pin one