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Rank: Goomba
Groups: Member
Joined: 1/3/2006
Posts: 11
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I must say, after browsing the site I see how I can fix at least a couple of problems with my original NES unit (it flickers half the time, locks up mid play, etc) but I would also like to fix a unit I picked up at a thrift store (unfortunately I can only use one of the two units as the one I picked up at the store had no power... suppose I could pick up a new one)
Anyway, unit number two only displays black and white. I swear it played in color at some point in time, but it doesn't anymore. I even tried hooking up RCA cables instead of the Nintendo cables, still black and white. I briefly got unit one working to know it's not my TV or the games.
Anyone have any suggestions?
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Rank: Koopa Paratroopa
Groups: Member
Joined: 10/8/2005
Posts: 431
Location: Canadia
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The only thing I can think of, and this only comes to mind because my SNES likes to fool me this way sometimes, is that you have the NES switched to Channel 4 and the TV on Channel 3. If, however, it's a hardware problem, well. I have no ideas.
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Rank: Bowser
Groups: Member
Joined: 12/18/2004
Posts: 2,642
Location: Danville, IL
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hmmm... I'm not really sure. I think the SMS3 has a problem displaying in different regions. It shows up in black-and-white I believe because it's PAL-M. Is there a chance that it may be an NES from a different region? I wouldn't know how to go about checking that, maybe seeing if the bottom of the unit says anything different (volt usage and mA maybe?). I'm just guessing though.
http://robertlbryant.com
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Rank: Bowser
Groups: Member
, Moderators
Joined: 12/13/2004
Posts: 3,577
Location: Ontario, Canada
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"Roth" wrote:hmmm... I'm not really sure. I think the SMS3 has a problem displaying in different regions. It shows up in black-and-white I believe because it's PAL-M. Is there a chance that it may be an NES from a different region? I wouldn't know how to go about checking that, maybe seeing if the bottom of the unit says anything different (volt usage and mA maybe?). I'm just guessing though. That's a possibility. I was thinking that maybe the Y (Luma) and C (Chroma) signals had gotten separated (broken trace on the board or something...), but that's impossible, as the PPU outputs composite directly. the region difference sounds like the most likely problem.
 
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Rank: Goomba
Groups: Member
Joined: 1/3/2006
Posts: 11
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Thanks for the replies!
Last night before I posted I tested both channel 4 and channel 3 (moved the switch and changed channels on my tv) and just tried it again to make sure, and that didn't work.
I compared the bottoms of the two units to one another and they're identical as far as all the markings go (except serial number obviously). Also, if it were a PAL unit, wouldn't that mean it wouldn't play my NTSC games? (It is unmodded)
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