Can't Get Vga To Work, Xbox 1.0, softmodded with ndure 3.1, no F-Drive Options

[AnnaOlum]

Recently I was given a (old) Xbox 1.0 for free. I decided to extend it with an VGA port.

What do I have to do to get my VGA port to work?
I soldered the port directly to the motherboard after JaredC01's diagram/guide.

I only get a signal with my old CRT monitor (another CRT doesn't even work) and even then only when it boots.
Also the screen is too green (and too dark) - the Microsoft logo isn't white but green.
(Btw: I don't have a HD cable)

Greetings,
Anna

Edit: Already checked the cables - they're all in their right places and isolated from one another.

This post has been edited by AnnaOlum: Jan 29 2012, 02:59 PM

[AnnaOlum]

I recently ordered two samples of the EL1883ISZ from Intersil. This chip has real HSYNC.
Can I use it for VGA Output and how do I do it?

This post has been edited by AnnaOlum: Mar 22 2012, 06:21 PM

[xboxmods2977]

I recently ordered two samples of the EL1883ISZ from Intersil. This chip has real HSYNC.
Can I use it for VGA Output and how do I do it?

Looks to me that this chip has the same pinout as the LM1881n. So, you would use/wire it just the same.

[xboxmods2977]

Looks to me that this chip has the same pinout as the LM1881n. So, you would use/wire it just the same.

Scratch this.

H-Sync is output on pin 7 of this chip, so you would de-solder the line to pin 1 on your 8-pin socket and solder it to pin 7.
Found another one too like this. The GS4981 is also a video sync separator with true H-sync output, but with these chips, it looks like you may need to invert the H-Sync line. Not positive about that tho. Worth a shot.

I just realized that one of the issues with the LM1881 is that it outputs a composite sync signal into the VGA monitors H-Sync line, which some monitors (and HDTVs) will not like. This is one of the reasons why the LM1881 isn't 100% compatible with all VGA monitors. I cannot believe I never noticed this before.
Also a side note, the EL4581 does not have H-Sync out. It is the same as the LM1881, according to the datasheet.

This post has been edited by xboxmods2977: Mar 30 2012, 03:56 AM