Road Blaster won't coin up...

Can you go into Self Test and move through the options?

Check the 74LS244 at 17C (Sheet 6A on the Schematics)

Not sure, how do you get this game into test mode? I didn't see any of the typical Atari coin door area switches.
 
Not sure, how do you get this game into test mode? I didn't see any of the typical Atari coin door area switches.

Couple of ways to do it.

Easiest is the Switch on the AR/II board.

Or

There is a Test Point on the Main board labeled something like "SELF TST". Ground that, and it will go into Self Test.
 
I had a problem with my Roadblasters. It wouldn't come out of free play. I think that the problem was you couldn't change settings in the test mode because the gas pedal was off making it seem like it was slightly pressed. In the test menu, the gas pedal's function is to reset to default and default is free play.
 
check & carefully reseat connector (s) from coin door going to the main board, seen this happen before and usually this will clear it up, if not do as above stated & put into self test to make sure it sees and can test the coin switches
 
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