50hz to 60hz

Winston Goh · Feb 15, 2002

Hi,
Anyone can show me how to mod a ntsc 50hz to 60hz?

Winston

Thank!

ray_7 · Feb 15, 2002

Which wire do I have to cut??? I recently open my system and I couldn't see any wire saying 50hz or 60hz??

Wolferaizer · Feb 15, 2002

i assume (like neocd version) there is no wire. u need to link 2 points together on da pcb. small square with some weird number. make sure u r good at soldering. or better get <img src="graemlins/help.gif" border="0" alt="[Help]" /> .

ray_7 · Feb 15, 2002

How bout changin form PAL to NTSC?? I see that theres a small resistor in the square marked 'PAL', do i have to remove that resistor??

Wolferaizer · Feb 15, 2002

like what u said, there's a resistor. u may need to cut that off (do not remove da resistor in case need to re-attach), then u replace it with some other resistor value. im dont know MVS mod, so my recommendation: ask for more info BEFORE u start your own modification.

Wolferaizer · Feb 15, 2002

i found some stuff for your good reading material:

<a href="http://home1.gte.net/res002b4/neogeo/hcmods.htm" target="_blank">http://home1.gte.net/res002b4/neogeo/hcmods.htm</A>

ray_7 · Feb 15, 2002

I've just figured out that the resistor has been cut in one side (the other leg is still attached) is that fine??

Wolferaizer · Feb 15, 2002

err thats fine as long as it didnt touch anything, wrap it with insulation tape or something.

did u cut it yourself????

ray_7 · Feb 15, 2002

Originally posted by Wolferaizer:
err thats fine as long as it didnt touch anything, wrap it with insulation tape or something.

did u cut it yourself????<hr></blockquote>

Nah, the selled did that.....but it still display those black borders???

Wolferaizer · Feb 15, 2002

hmm.... no resistor shits, i think.

Converting PAL Neo's to NTSC:

1. Remove the resistor that is located towards the top-right of the board, marked "PAL".

2. Replace the video sync crystal with one that is rated at 3.579545 MHz.
This is located in the top left area of the board.

3. Change the PAL/NTSC setting of the CXA1145 video decoder chip.
Usually (on all the newer style boards), you will see an NTSC jumper that is empty and a
PAL jumper that is set. Just take the PAL one off and set the NTSC one.

Winston Goh · Feb 16, 2002

Originally posted by Wolferaizer:
hmm.... no resistor shits, i think.

Converting PAL Neo's to NTSC:

1. Remove the resistor that is located towards the top-right of the board, marked "PAL".

2. Replace the video sync crystal with one that is rated at 3.579545 MHz.
This is located in the top left area of the board.

3. Change the PAL/NTSC setting of the CXA1145 video decoder chip.
Usually (on all the newer style boards), you will see an NTSC jumper that is empty and a
PAL jumper that is set. Just take the PAL one off and set the NTSC one.<hr></blockquote>
I sold Ray_7 the system, The system is NTSC 50HZ, Jumper is set to NTSC on CXA1145P, Cystal is 3.57.

ray_7 · Feb 16, 2002

Winston, I've just bought a digi cam and soldering tool, so can u explain me what to do tonight??

Arakon · Feb 16, 2002

guys, don't forget that there are at least 3 totally different board revisions.. the jumpers will be located in entirely different places, so don't go randomly cutting stuff until you KNOW it's the right place for your neogeo.

Winston Goh · Feb 16, 2002

Originally posted by ray_7:
Winston, I've just bought a digi cam and soldering tool, so can u explain me what to do tonight??<hr></blockquote>

Take a very clear pic of the whole board and email it to me, I don't have another AES system with the same kind of layout as your so I need a clear pic.

50hz to 60hz

Winston Goh

Camel Slug

ray_7

,

Wolferaizer

Gal Ageise's Demon

ray_7

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Wolferaizer

Gal Ageise's Demon

Wolferaizer

Gal Ageise's Demon

ray_7

,

Wolferaizer

Gal Ageise's Demon

ray_7

,

Wolferaizer

Gal Ageise's Demon

Winston Goh

Camel Slug

ray_7

,

Arakon

Robert Garcia's Butler

Winston Goh

Camel Slug