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Author Topic: Neo Geo 1st time boot - wierd screen  (Read 1471 times)

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b3dr0ck

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Neo Geo 1st time boot - wierd screen
« on: April 23, 2012, 01:25:58 am »
So ... continuing on this project - thanks for everyone's help so far

I've got the AC straight, the 5V and the 12V at the Jamma connector are good.

I connect a monitor, I turn on power and I get this screen.  It flashes back and forth.  I took 2 pics so you could see it, sorta.

I plugged another Jamma board in, and the video on it seemed OK.  Any ideas?
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MTPPC

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Re: Neo Geo 1st time boot - wierd screen
« Reply #1 on: April 23, 2012, 09:33:49 am »
Clearly the monitor is good. Maybe reseat the chips on the board.
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CheffoJeffo

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Re: Neo Geo 1st time boot - wierd screen
« Reply #2 on: April 23, 2012, 10:36:56 am »
Channelmaniac's repair logs are a good place to start -- here is the link to his NeoGeo logs:

http://newlifegames.net/nlg/index.php?PHPSESSID=09bc4649c6c5ed7155098b55d60b12cb&topic=152.0
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emphatic

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Re: Neo Geo 1st time boot - wierd screen
« Reply #3 on: April 23, 2012, 11:16:44 am »
1. Does the motherboard BIOS match the cart's region?
2. Take a q-tip and rubbing alcohol and remove any dirt from the connectors on both cart and motherboard.
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