modessitt
Volunteer: Encyclopedia Submission Moderator
Game comes up and runs. You can push Game Select and cycle through the 4 options, but you can't start a game. I've swapped the Start button with the Select button, and verified it isn't the button.
Now, I didn't have access to the wiring diagrams, but looking at them tonight I think the wiring to the button is wrong - with the LED wire and Start wire swapped. This would explain why the LED isn't blinking either.
So - my next step will be to go out with the wiring diagram, verify the wiring, then trace back to the edge connector. While I was out there, I put it into switch test and all buttons register but the Start button. I tried swapping in two different Pokeys (as I had a Millipede PCB in the truck at the time) as well as a 6502, but that didn't change anything (except curiously making it go off of free play at one point).
So, I'm trying to think ahead in case the wiring checks out and it still doesn't work. Would my next step be to check the two resistors, then the LS251 at L9?
Now, I didn't have access to the wiring diagrams, but looking at them tonight I think the wiring to the button is wrong - with the LED wire and Start wire swapped. This would explain why the LED isn't blinking either.
So - my next step will be to go out with the wiring diagram, verify the wiring, then trace back to the edge connector. While I was out there, I put it into switch test and all buttons register but the Start button. I tried swapping in two different Pokeys (as I had a Millipede PCB in the truck at the time) as well as a 6502, but that didn't change anything (except curiously making it go off of free play at one point).
So, I'm trying to think ahead in case the wiring checks out and it still doesn't work. Would my next step be to check the two resistors, then the LS251 at L9?
Last edited: