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Hi all,

recently i have made reproductions for BS zelda, secret of mana 1, secret of mana 2, starfox 2, mickeys playtown etc, and they work great...on 2 of my consoles. On the other 3 super nintendos they dont.

so i have have 5 super nintendos

NTSC MINI
NTSC ORIGINAL A
NTSC ORIGINAL B
NTSC ORIGINAL C
Japanese super famicom

On consoles: NTSC ORIGINAL A and NTSC ORIGINAL B, EVERY GAME boots fine and plays great.


On the other consoles, 2 of them DONT BOOT at all except through the game genie. They are BS ZELDA and Secret of mana 1. Their only common thread seems to be they both only have 2 x 27c801 chips inside. When i boot, they get garbled screen or black screen. However if i load them through a game genie, they DO boot fine. Whats the deal? Anyone have any ideas? Same POWER SUPPLY, same AV cables SAme TV. Is it something to do with the CIC? or SPU module differences? i am stumped. Thanks for your time

Did you try cleaning the cartslot pins (toilet tissue soaked in alcohol and wrapped around a credit card) ?

Pin bending can give positive effect aswell.

seriously, how magazine-paper like is your toilet tissue?

because in the US and Canada, toilet paper + liquid + snaggingly sharp metal pins sounds almost trollish. You'd never hope to get all the lint and shreds out.

perhaps I should have mentioned cheapo sandpaper like toilet paper that you normally would not use for its intended purpose

I know, my mind was in the gutter anyways.

As for the issue at hand, yeah clean the console's connector too.

You might have some output enables on your chips either swapped (/CE with /OE) or have left some address lines or enable lines floating.

You also might have cold-solder joints.

dunno. it's your home-made stuff.

Thanks for the input guys. I mean, the carts work just fine on other snes systems...so everything seems connected. I cant help but agree it seems like a cart connector issue. Ive cleaned the slots though, and all other games seems to work. Cleaned up the pcb as well. Oh well. Ill just use game genie on those systems...the other ones work fine....

thanks!