(Topic ID: 285598)

Feisty Bride....


By JohnSteed

7 days ago



Topic Stats

  • 20 posts
  • 4 Pinsiders participating
  • Latest reply 5 days ago by JohnSteed
  • Topic is favorited by 2 Pinsiders

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    #1 7 days ago

    After years of neglect, I decided to play around with my bride (The Machine Bride of Pinbot). When I turn the power on I hear a loud zap sound that is coming from the back box (presumably the speakers?). It is loud! Zap! After the zap, the machine boots up as normal, however, it displays the Factory Settings Restored message on the DMD. When I try to use the direct switches on the coin door to adjust the settings, none of the the four switches work. None of the wires are disconnected, burnt, or show signs of problems. I unplugged all of the molex connectors from the board on the left wall under the playfield and that did not help. I opened the back box and reset all of the plugs and ribbon cables and that did not help. I removed the J205 connector from the mpu and attached a wire to the ground harness of the back box and touched each pin of the connector. Nothing.

    The mpu LEDs light up as if it is a working board (LED 20 blinks and LED 21 stays lit, while LED 19 goes out after start up). I removed the mpu board from the back box and gave it a visual inspection. The sticker on the board has a date from 1994, so it is a replacement mpu board (TMBOP was built in 1991). I did notice some greenish white crust on some of the legs of the chips directly under the battery, which I lightly scrapped off. All the pins of the chips are firmly soldered in place by the factory. No repairs were ever done on the board. Other than the light crust on the chips' legs, the board looks like new! The batteries inside are new and there is no sign of previously leaked batteries. A few years ago the machine worked fine and I managed to get all of the high scores on it!

    What is causing that loud zap sound on start up? Would replacing the mpu board resolve this issue? Thanks.

    #2 7 days ago

    Sorry I can not help you but I like your avatar!

    #3 7 days ago
    Quoted from drummermike:

    Sorry I can not help you but I like your avatar!

    Thanks! I'm a big Avengers fan. I especially enjoyed the episodes that featured Diana Riggs as Emma Peel (M Appeal, short for man appeal...). In that picture, John Steed rescues Emma who is tied to a railroad track with an oncoming locomotive in the near distance. Great stuff!

    #4 7 days ago

    Can you coin up using the switches on the coin door and start a game? Did you replace the batteries in order to get rid of the Factory Settings message? Probably best to post some really good pictures of the area of the board under the battery holder. The green stuff on the legs is from previous battery damage and there's a good chance this is causing your problem and the board will need to be worked on.

    #5 7 days ago
    Quoted from JohnSteed:

    Thanks! I'm a big Avengers fan. I especially enjoyed the episodes that featured Diana Riggs as Emma Peel (M Appeal, short for man appeal...). In that picture, John Steed rescues Emma who is tied to a railroad track with an oncoming locomotive in the near distance. Great stuff!

    I have ALL the series. Most are on DVD some on VHS. I have Blackman, Rigg, Thorson and Lumley Avengers series. Rigg was the best. I have four books and a poster of Steed and Emma. It was a great series.

    #6 7 days ago
    Quoted from bobukcat:

    Can you coin up using the switches on the coin door and start a game? Did you replace the batteries in order to get rid of the Factory Settings message? Probably best to post some really good pictures of the area of the board under the battery holder. The green stuff on the legs is from previous battery damage and there's a good chance this is causing your problem and the board will need to be worked on.

    None of the switches on the coin door or coin chutes give a response on the DMD. The batteries are brand new and the battery holder is in great shape. I will try to post some pics tomorrow of the board and the chips with the green stuff on them (now neatly scrapped away). I am planning on replacing this board and the mpu in my dead fish tales pin with new boards.

    Now I am concerned about what is making that loud ZAP!!! sound when I first power on the machine. Thanks!

    #7 7 days ago
    Quoted from drummermike:

    I have ALL the series. Most are on DVD some on VHS. I have Blackman, Rigg, Thorson and Lumley Avengers series. Rigg was the best. I have four books and a poster of Steed and Emma. It was a great series.

    I too have all of the DVD sets! I got them when they first came out from AMC. I also have a DVD with some rare, previously lost earlier episodes from the early 60's. It is one of the rare shows that both my wife and I love to watch. Her favorite episode is The House that Jack Built and mine is A Touch of Brimstone (although with a lot of close seconds).

    #8 6 days ago

    The House That Jack Built is one of my favorites also. I know why you like A T of B!

    I think I have that rare stuff on DVD also.

    #9 6 days ago

    So it's not the normal "pop" that is pretty common at power-up on WPC games? Put a DMM on the pins going to the direct switches at J205, do you have ~12VDC on them?

    #10 6 days ago
    Quoted from drummermike:

    The House That Jack Built is one of my favorites also. I know why you like A T of B!
    I think I have that rare stuff on DVD also.

    You dog!

    #11 6 days ago
    Quoted from bobukcat:

    So it's not the normal "pop" that is pretty common at power-up on WPC games? Put a DMM on the pins going to the direct switches at J205, do you have ~12VDC on them?

    No, there is nothing normal about that zap sound. I have never heard it on any other pin. However, it is consistent in that it occurs only once every time I power up the game. After that, everything seems normal! Also, when I shut the power off there is a zap sound but to a lesser degree.

    There is no voltage across the pins on connector J205. I just ordered a new MPU board for this pin. I actually like playing the MBOP and I miss the bride's sassy comments. Thanks for the suggestions!

    #12 6 days ago
    Quoted from drummermike:

    The House That Jack Built is one of my favorites also. I know why you like A T of B!
    I think I have that rare stuff on DVD also.

    "Dog? Did you mean snake?"

    #13 6 days ago
    Quoted from JohnSteed:

    No, there is nothing normal about that zap sound. I have never heard it on any other pin. However, it is consistent in that it occurs only once every time I power up the game. After that, everything seems normal! Also, when I shut the power off there is a zap sound but to a lesser degree.
    There is no voltage across the pins on connector J205. I just ordered a new MPU board for this pin. I actually like playing the MBOP and I miss the bride's sassy comments. Thanks for the suggestions!

    Check your 12V test points, I'd personally try to figure out what the noise is before putting a new MPU in there as well.

    #14 6 days ago

    "My oh my. Did someone say BRIDE?"

    #15 6 days ago
    Quoted from JohnSteed:

    it occurs only once every time I power up the game. After that, everything seems normal!

    Voltage shot to the speaker, bad cap in the sound board.

    #16 5 days ago
    Quoted from JohnSteed:

    "My oh my. Did someone say BRIDE?"
    [quoted image]

    Is this photoshop?

    #17 5 days ago
    Quoted from phil-lee:

    Voltage shot to the speaker, bad cap in the sound board.

    That is what I suspected - either a bad cap or a bad chip. But which one? If it were a bad cap, why does it only occur upon power up instead of all the time? Thanks!

    #18 5 days ago
    Quoted from drummermike:

    Is this photoshop?

    No, it is an actual photo! From the Avenegers!

    #19 5 days ago
    Quoted from JohnSteed:

    No, it is an actual photo! From the Avenegers!

    Was it in an episode? I recently watched all the Emma Peel episodes on DVD and never saw that. Was it a production still?

    #20 5 days ago
    Quoted from drummermike:

    Was it in an episode? I recently watched all the Emma Peel episodes on DVD and never saw that. Was it a production still?

    I'm not really sure, but I believe it was taken from the episode: Epic.

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