Neo Geo CD Neo Geo CD Black Screen Problem

Guys,
I have a Neo CD toploader I got off eBay non working, basically the issue is that there is no picture when you boot the system with either composite or RGB scart lead (from the 8 pin DIN) connected.

I can hear the Neo CD boot screen sound through both connectors, and my PAL TV even 'jumps' into NTSC mode, as with all my working NTSC consoles - it looks like it is picking up the sync, so why won't it display any other image?

I have taken it apart, and from a quick look, I can't see anything obvious. Is the fault likely to be with the main board, or a problem with the connector board where the power and video sockets are?

All help appreciated.
Cheers,
Paul

Was a video mod ever attempted on this system?

and... just to cover bases... your TV works with PAL correct? If the system is a European PAL system... the NTSC version doesn't work on an NTSC based tv. The Brazillian PAL systems do work with NSTC tv's.


BV :hat

Does not look like the system has ever been opened before, no mod has been attempted...

It is a Japanese NTSC system, but I have another working system, so I know there is no problem with my TV set-up, all my NTSC systems run fine on it, RGB or Composite (I am in the UK, and have avoided PAL consoles since the 16-Bit era, even my PS3 is US).

Strange that it plays sound through either connector, and syncs at 60hz, but displays nothing...

Cheers,
Paul

cawley1 said:

Does not look like the system has ever been opened before, no mod has been attempted...

It is a Japanese NTSC system, but I have another working system, so I know there is no problem with my TV set-up, all my NTSC systems run fine on it, RGB or Composite (I am in the UK, and have avoided PAL consoles since the 16-Bit era, even my PS3 is US).

Strange that it plays sound through either connector, and syncs at 60hz, but displays nothing...

Cheers,
Paul

Click to expand...

I am going to say... that is very odd.

have you attempted use the S-video connection with a regular S-video cable?
If composite and S-video are not working, I would think it has to be something with the mainboard or a component with the display connectors.

BV :hat