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(Topic ID: 118894)

Voltages in the backbox to check

By arolden

9 years ago



Topic Stats

  • 6 posts
  • 5 Pinsiders participating
  • Latest reply 9 years ago by arolden
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    #1 9 years ago
    OP
     
    ASV

    arolden

    Pinside member

    10y 46,550 975

    Hi all.

    I may be purchasing a few WPC games soon. They appear to be in working order but of course I would like to do my own checks. I already know to look for battery leakage, bulging capacitors and other physical problems. But which voltages should I also be checking as a matter of course? So far I know I should at least check the +5 and +20 VDC at the test points. I also like to check the voltages going to the DMD so I can see if the high voltage section has problems. Are there any others that are important to inspect?

    Thanks in advance everyone.

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    #2 9 years ago
     
    TOM

    mot

    Inactive member

    US Sharpsville, PA

    11y 60,650 1,833 5 18

    That's not bad stuff to check, but turning on the game and playing a game should be just as good of an indicator of major problems.

    You can also go through all of the tests to figure it all out. Switches, lamps, GI, coils, flashers, and any special game-specific tests. Oh, and look for credits and anything in the operator alert when you enter the menus.

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    #3 9 years ago
     
    JOE

    joe2012

    Inactive member

    US East Stroudsburg, PA

    11y 56,400 1,088

    Make a list of the games and make posts for each game.Ask about known problems to look for. G.L. Joe

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    #4 9 years ago
     
    DAN

    z28dan

    Pinside member

    US Akron, OH

    11y 45,800 406 29

    More important than checking voltage should be verifying all fuse sizes are correct.

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    #5 9 years ago
     
    BOY

    vid1900

    Pinside member

    YE Sana'a

    12y 169K 40,242 18

    Quoted from z28dan:

    More important than checking voltage should be verifying all fuse sizes are correct.

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    #6 9 years ago
    OP
     
    ASV

    arolden

    Pinside member

    10y 46,550 975

    Thanks for the advice everyone. Of course I will also be checking the fuses and the diagnostic tests as well. From the sounds of it, there isn't much point in checking any other voltages. I guess I have everything covered!

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