Arcade Collecting > Miscellaneous Arcade Talk

How to start finding board and monitor problems?

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paigeoliver:
A black and white Atari game often won't boot if the microswitch on a coin mech is bad or not hooked up. Not sure if Space Encounters does that, but the Sprint games do.

unclet:
Thanks for the PDF file.   I have a lot of what is in there already, but not everything so I will defintely print a nice copy of it.

I do not know how to read schematics, so this will definitely be a learning experience.

As for the switch on the back door ....... I did notice it was there and made sure to tape the switch closed so everything "should" work even if the back door was off.

The machine does not have any coin mechs so there are no switches.  I believe the previous owner got the monitor to come up all garbled even without the coin mechs so I am not sure if the missing microswitches caused this problem.  Although, since I can not tell you if the machine actually "booted" (ie: all I know is that the monitor originally came up all garbled) then maybe this could still be a cause to the problem.

Here is a picture of the Sound PCB and also the power supply board.  Also another close up shot of the power supply board as well.

unclet:
Here are photos of the L-shaped boards (gamePCB and the MainPCB):

unclet:
This is what  is mounted to the bottom of the cabinet floor .

Here are some pictures of the isolation transformer:

unclet:
Finally, some close up of the isolation transformer:

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