hi, new nomad off ebay but trouble

paul4990 · Post by **paul4990** » Wed Jan 04, 2006 6:50 am

just does black screen, souns fine and works on TV and backlight is fine, brightness does nothing.

any help?

Zhooibaal · Post by **Zhooibaal** » Wed Jan 04, 2006 7:07 am

Open it up and see if there are no disconnected wires from the screen? If that's not it I'd say the screen is busted.

paul4990 · Post by **paul4990** » Wed Jan 04, 2006 7:12 am

gonna fo that now.

paul4990 · Post by **paul4990** » Wed Jan 04, 2006 9:17 am

the screen ribbon was completely disconnected, and sellotaped on and i woulnt work so i threw the screen out

Zhooibaal · Post by **Zhooibaal** » Wed Jan 04, 2006 10:46 am

So now you have a screenless nomad? Sounds like a nice base for a mod

paul4990 · Post by **paul4990** » Wed Jan 04, 2006 11:28 am

yeh, and i have an empty nomad shell with controlls and mobo

does ne1 know the pinouts fo the nomad mainboards 30 pin ribbon?

like 1-30

then

1 +7v
2 GND

3 R
4 G

ECT

segasonicfan · Post by **segasonicfan** » Wed Jan 04, 2006 3:01 pm

you through out the screen?!?!?!

Not only was someone on here looking for one but I could've helped you fix the Nomad....I've repaired many Nomads and the problem wasn't even that bad :/

-Segasonicfan

paul4990 · Post by **paul4990** » Wed Jan 04, 2006 4:57 pm

well, i was looking to fix it, and guess what, about 20 traces off the ribbon (70 pin one) had completely gone, and the rest corroded.

hey SSF could you tell me the pinout for the mobo of a nomad?

the 30 pin one..
thx

Turbo Tax 1.0 · Post by **Turbo Tax 1.0** » Wed Jan 04, 2006 5:02 pm

paul just get video off of the tv out spot and put a hipgear in it in fact i have a hipgear i could sell you, it is just the lcd and the board though no contrast knobs or anything but it accepts power and a vid signal

paul4990 · Post by **paul4990** » Wed Jan 04, 2006 5:07 pm

cool, but i have no money lol, and one thing, the nomad mainboard dont have av out, or power, thats on the Sub Board, which i cut up for its bits

oh and Lemon, keep that hipgear, ill like it when i get money, coz ive wanted one for a while now

segasonicfan · Post by **segasonicfan** » Wed Jan 04, 2006 5:15 pm

oic paul heh heh that makes a lot more sense

Man I just soldered one of those to repair my last Nomad....insanity!

Unfortunately I don't know the 30 pin pinout and it would take a whiiiile to find out. I don't have a Nomad to look at anymore either--just my repaired one which I am NEVER opening again (too dangerous with all the wires and fixes).

I can tell you that 9 of the pins go to the controller chip above the connector...that shouldn't be too hard to trace. The easiest way to find the RGB lines is to just get a datasheet PDF of the chroma encoder for the screen (it's the chip next the the controller IC).

Thing is though, if you're planning on just using the back PCB you will need to make your own chroma encoder circuit (using the CXA1645 or other) to get a useable RGB output. You will probably also need to amp the audio lines (the Nomad has a dedicated circuit for this).

-Segasonicfan

paul4990 · Post by **paul4990** » Wed Jan 04, 2006 6:08 pm

ahh, sack it... ill use a goac prolly, who needs a working unmodded nomad CPU board? you could use the cart slot!

Turbo Tax 1.0 · Post by **Turbo Tax 1.0** » Wed Jan 04, 2006 7:40 pm

i'll take it

paul4990 · Post by **paul4990** » Sat Jan 07, 2006 10:25 am

ill ebay it then if any1 wants it.