Jamma 412-in-1 cocktail problems

[Terry St]

I have just finished building a cocktail cabinet and installed the jamma 412-in-1 controller. I went over the directions and have quadruple checked all the details. But I am unable to load any games. Aslo when in the setup mode I can not do a system I/O check. The system just stays in the menu screen and never goes to the I/O screen. I am able to go through and do everything else in the menue system. When I try to load a game it scrambles the screen and then returns to the game list screen.
Any suggestionson what the issue could be? And pin 27 is not to ground.
 

[behrmr]

Did you buy it new or used? Did you or the prior owner attempt to hack/mod the SD image?

[Terry St]

It is new. Purchased it as a kit with power supply, buttons, joystick and monitor.

[behrmr]

Try doing a factory reset in the system menu. If that doesn't work consider returning it. 

[BobA]

The 60 in 1 jamma boards require a coin inserted before you can move around the selection menu.   You need a way to toggle the coin insert before it starts to work.

[behrmr]

Does not sound like a coin issue OP says a game starts to load and then goes back to menu.

[Terry St]

Thanks for the input guys.
I found the problem. On player one side the prong on the B push button was bent up touching the other and causing it to be going to ground all the time.