(Topic ID: 117292)

Stern Whitestar driver board. Why was this done?

By jeff_286

6 years ago


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  • 13 posts
  • 7 Pinsiders participating
  • Latest reply 6 years ago by ChrisHibler
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    #1 6 years ago

    20150202_194312.jpg20150202_194237.jpg

    #2 6 years ago

    Because the board is melted thru ruining the ground trace,and they jumpered the ground lead of the transistor to the ground of the board?

    #3 6 years ago

    Somebody butchered the board and the wires are replacing damaged traces.

    No matter how easy the video on the Internet makes it look... Practice on junk first!

    #4 6 years ago

    Machine was working fine i just assumed this was a problem area.

    #5 6 years ago
    Quoted from jeff_286:

    Machine was working fine i just assumed this was a problem area.

    I just had a transistor go out on my whitestar that looked burned like that and jumpered (not as bad).

    #6 6 years ago

    I was going to send it to Clive but it may be worth just getting a Rottendog replacement. I do not mess with this stuff

    #7 6 years ago

    Maybe I'm misunderstanding, but if the game is working fine there is no reason for further repair or replacement. It isn't pretty, but it will work fine. Save your money and play the game.

    #8 6 years ago

    Was working fine then you know when it does not feel right. Test mode the diverter posts would not popup so something is funky,and i am not the pin tech so i usually pay more

    #9 6 years ago

    Yeahhhh really should learn to work on your games mate. The jumpers look ugly, but they are perfectly functional. I wouldn't have run the long one to ground, rather have just connected it to a closer one as it looks neater, but still works.

    Whitestar uses IRL540's to drive the coils. They can short out and instead of locking on, just do not work. Those jumper wires are not very likely to be related to the failure. You will need to replace the associated irl540 AND the diode on the failed coil. Failing to do that means you will just ruin kill the new irl540.

    #10 6 years ago

    Would you know if that is a IN4004 diode?

    #11 6 years ago

    On the coil? Should be. Just to remember to replace it and the irl540 at the same time. Failing to do that and one will just kill the other.

    #12 6 years ago

    This is what happens when a trace gets hit with high voltage. It vaporizes off of the PCB. The wires are just jumpers to repair those zapped traces. Nothing wrong with repairing bad traces with jumper wires. It is better that scraping a board because of it. Granted it is working, leave it be and live with it. It shouldn't cause issues unless it was done wrong to begin with. Whomever did the repair did not bother to clean up the carbon built-up though, so it looks messy. If you want with the game off and the board out of the machine, grab some q-tips and rubbing alcohol and clean up those areas that are covered in soot.

    #13 6 years ago

    It's not the best looking repair, but I see that a lot on WhiteStar driver boards. It works. Don't mess with it.

    To repair that board so the cosmetics are returned to factory would be unnecessarily costly.
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