(Topic ID: 142454)

SOLVED! What is this Transistor on my WPC95 Driver Board? Looks wrong...

By PinsOnly

8 years ago



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  • 9 posts
  • 5 Pinsiders participating
  • Latest reply 8 years ago by PinsOnly
  • Topic is favorited by 1 Pinsider

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    #1 8 years ago

    Hi, Any idea what this transistor is on my MM Driverboard? It is in Q97 and should be a TIP107. I am having trouble with the Lamps on Column 8 (All of them) I know there is another hack in the wiring that I haven't addressed yet, but it was all working fine, then one day they don't come on at all. Looking at the board I see this transistor in Q97.

    Oh, it's the Green one...

    Thanks, Dave

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    #4 8 years ago

    Yes, ECG 264, so Beefier is better, or at least OK? Hmmm, OK, Thanks for the Info, I will keep looking at the wiring hack. Still strange that it simply stopped working on it's own after years of working fine, just like these things seem to do once in a while... sigh.

    #6 8 years ago

    Hmmm, I don't know that test, I will have to look into that. The switches all work, it is the Lamps that don't. Really hard to spell "Fire" when you don't know what you have left to hit! All the switches work fine. I do know someone took power for that column from elsewhere, it is weird, but I saw the Green transistor and thought I'd see what that was all about.

    #7 8 years ago

    Note/Correction That should be COLUMN 8 on the Lamp Matrix.

    #9 8 years ago

    Solved, The trace was bad from the center leg on the Transistor to the Pin for the connector. I ran a jumper and changed out the transistor (which still tested good). All is fine now.

    Here is a picture of the wiring hack, for some reason a previous owner (Vendor) opened the wire for that lamp column and ran a nother wire to the lamp at the end of the column, in this case, the shoot again lamp, effectively creating a loop instead of a chain. It was working fine until the trace opened. I removed the wire and it is back to original and 100% working.

    Thanks for the tips and help everyone, much appreciated!

    Dave

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