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We may be beyond what a logic probe can test with. You might need to send it to someone like Gamefixer...
OP. I'd be happy to look at that board set for you.
I figured it was heading that way...bums me out..i already paid to get it fixed once already...now im on the hook to pay to get it fixed again.
Thanks for all of your suggestions...i greatly apprecaite your time and knowledge...that goes for everyone else that threw out a suggestion, ...thank you.
when I get back from Anchorage and can look at this on a larger scale (and maybe on a working board) I'll post some more suggestions to the thread.
Some times its hard to trouble shoot from a hotel.
HIJACK ALERT!
Where are you at in Anchorage? I was born and raised there...
Not really sure. Less than 10 minutes from the airport if that helps any.
Well, that could put you in a lot of different places![]()
How long have you been gone?
Left in '86, went back for a few months in '89 after getting out of the Army then moved to AZ for school and have been here ever since.
Well, I was going to point out the only landmark that I'm currently aware of thats been here for a while but I dont think it was here in 86, might have been in 89 though.
Century Theatres... Know the place?
Not that one specifically.
I lived across the street from Fred Meyer on Northern Lights Blvd.
Theres a Fred Myer close to the hotel I'm staying at, I bet thats about right.
Its kinda trippy up here. Its 9:30 local but outside it looks like what Dallas looks like at 6:30/7.
We may be beyond what a logic probe can test with. You might need to send it to someone like Gamefixer...
Let me ask before i send it off to get fixed..lets take the pcb out of the equation for a minute....what test can i do at the edge connector to the pedal? Meaning, could i put my digital multi meter set on dc or ohms....stick the probes into the edge connector..then press pedal....should i get s specific reading?...a voltage change?...ohms movement?......or maybe stick the logic probe into edge connector and press pedal and logoc probe go from high to low or visa versa?
I absolutely do have continuity from pedal to edge connector..that has been proven. I have also replaced the pot with a new one.....i have since reinstalled the original pot back onto the pedal....and the tension wire from pedal to pot has always been at its original winding and tention. Both pots are good..i even made a thread about testing the original pot, with video even.
https://forums.arcade-museum.com/showthread.php?t=401700
I just want to do some kind of test to make absolutley certain the issue is not between edge connector and pedal before i mail it off.
You've already verified continuity so there really isnt anymore testing of the edge connector or harness that you need to do.
I'd be careful about jamming probes into the edge connector. Those pins are single wipe against the board. If you push the pins too far away form the board they wont make contact any longer.
The fact that GASEL is not changing tells me that you have a board problem. Where the problem is though, thats the question.
The thing that confuses me (amongst other things) is that when i test the pot when its removed from the game the ohms move as i turn the pot as u can see in that youtibe vid from the other thread....when the pot is installed and i test the ohms at the edge connector i would think i should see the same ohm movement as i press the pedal as when i test the pot out of the game.
Unless for im not testing for ohms correctly at the edge connector.
And yes, i am being very cautious of the probes with the edge connector.
The thing that confuses me (amongst other things) is that when i test the pot when its removed from the game the ohms move as i turn the pot as u can see in that youtibe vid from the other thread....when the pot is installed and i test the ohms at the edge connector i would think i should see the same ohm movement as i press the pedal as when i test the pot out of the game.
Unless for im not testing for ohms correctly at the edge connector.
And yes, i am being very cautious of the probes with the edge connector.
When connected to the game, +5V should go out from pin R into the Pot and the result should return through Pin F.
So with the game on, you should be able to put your meter in DC mode and test the voltage at pin R, then pin F. Black Lead to Ground. Red Lead to pin R to test the output voltage. Black Lead to Ground, Red lead to F to test the return voltage.
If R has nothing then you have a problem there. If R is outputting something (should be +5V) then F should be less than that. How much less should vary depending on how far you press on the gas.