nickle241 Posted February 14, 2020 Share Posted February 14, 2020 i got my hands on a copy of the original legend of zelda but its seen better days, i got most of the corrosion off but the diodes and capacitor either came lose in the bath or were missing when i got it and without them i cant really test to see how the chips are doing, unfortunately i cant find any details on the specs of the missing parts and this seems like it may be a less common board type for this game, it has five chips and a single center capacitor, or rather had, the capacitor and both diodes broke lose Quote Link to comment Share on other sites More sharing options...
emerson Posted February 15, 2020 Share Posted February 15, 2020 So the diodes and capacitor (there should be 10k resistor or two as well) supply power to the ram chip from either the console or the battery. You could test the cart ram by connecting VCC of the ram chip directly to VCC on one of the roms with a bit of wire. Create a save file then reset the console. If the save file is still there then the ram chip is probably good. I suggest replacing the battery while you're at it. A good battery will measure around 3.3V. Here is a schematic which has part values. http://forums.nesdev.com/viewtopic.php?t=8374 Is this your board? http://bootgod.dyndns.org:7777/profile.php?id=4270 Quote Link to comment Share on other sites More sharing options...
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