nesdev.org

jims cool wrote:no sweat, seemed on topic to me

you should checkout the main NESdev forum lots of fun stuff happening

For sure I will do that when I've got more free time, working a lot of overtime right now. Looks like some pretty cool stuff in there.

I just wanted to clarify, when I say "won't boot", I mean "I get a gray screen as if the cart was not properly read and loaded", and not the typical CIC lockout "game boots but resets every second" error. nice! glad we got it all worked out for you :lol: welcome to nes...

I just wanted to clarify, when I say "won't boot", I mean "I get a gray screen as if the cart was not properly read and loaded", and not the typical CIC lockout "game boots but resets every second" error.

And I suspect one of the traces you cut is the one for the 0.1µF capacitor which makes the power-on delay for the CIC, which is necessary to get the machine to boot. Could be, but would that explain the intermittent booting? Need to remember, a good handful (maybe even the majority of the games I t...

james cool :lol: that's not my real name btw.. just a tag.. the reset trace goes to pin 7 of the cic.. not sure if you missed that but will be useful for testing (+5 volts is reset on that pin)... if it's that bad inside you can also try replacing the capacitor C8 as you probably know from arcades ...

reset button should work.. i believe your chip may be damaged.. i've seen that happen to people heres a diagram of how you can fix it.. i posted a photo of a patched board in this thread already (snip image) Excellent, I will follow this diagram (and the actual photo you posted earlier) and do the ...

depends because the leg is snapped off "floating" on the CIC but it has a pull-down on the chips die if it randomly stops and starts working and the power power light/led is turned solid off when the system is on and (doesn't blink) that means the system is locking out in key mode otherwi...

I'd make sure the system connector is making good contact, re-seat it, and clean the board connector too is what I'd guess. And also maybe make sure no pins popped out, I had that happen when I put in a game in on my Ninja Grip system. No way is it related to the pin 4 mod, no way, it's just a stan...

Doesn't matter what it LOOKS like, the games are 25 years old, there is plent of caked on thin layers of dirt on those connectors. The game isn't booting, something is dirty. Unless it's your "new" connector, it's the game. Clean it with an eraser and then alcohol after, I'd bet a lot tha...

No, that's just the program not booting because the games are dirty. Clean the games with alcohol or something better, and then also maybe the connector in the system somehow to get the dirt off that was on those dirty games. As I said, the game itself has perfect contacts and boots just fine in my...

OK, so please bear with me as I know a little bit about electronics repair (I own and maintain several arcade cabinets) but not much at all about the NES. I have two systems, one is the original NES I got for Christmas 84 (or 85) and one I just picked up at a yard sale. The one I've owned my whole l...