(Topic ID: 268057)

Dash 35 board: stuffed in consecutive numbering


By vec-tor

9 months ago



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  • 30 posts
  • 9 Pinsiders participating
  • Latest reply 3 days ago by vec-tor
  • Topic is favorited by 4 Pinsiders

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    #1 9 months ago

    What do you do when all the stores are closed and you are stuck at home and you have those projects/jobs you need to get done and you decide to go anal-retentive? Why stuff a Dash 35 board with the components in numbered order.
    Parts needed
    1) A bad Bally CPU with mostly good components.
    2) A Hakko desoldering gun.
    3) A soldering pen/station.
    4) A roll of solder.
    and finally the piece de resistance,
    5) A Dash 35 PCB board.
    IMG_0001[1] (resized).JPG
    Part 1:
    The Resistors:
    [#1--#10]
    IMG_0001[1] (resized).JPG
    Resistors:
    [#11--#20]
    IMG_0002[1] (resized).JPG
    Resistors:
    [#21--#30]Note: R25--R27 N.U.
    IMG_0003[1] (resized).JPG
    That's it for today folks.
    Tune in, as it gets complected, or not.

    #2 9 months ago

    Labor of love! I can't imagine desoldering resistors for reuse =D.

    #3 9 months ago

    Resistors:
    [#31--#34] [#35--#38] pull-up resistors for PA0-PA7.
    ( top right of board )
    Note: U10 PIA PA0---PA7, truly a "workhorse" port.
    1) Drives switch strobes and 1st three dip switches.
    2) Drives lamp address & lamp data.
    3) Drives player displays #1 through#4 & display segment (BCD) data.
    IMG_0004[1] (resized).JPG

    #4 9 months ago

    Resistors:
    [#39--#46] resistors for U10 PB0-PB7.
    ( right side of board )
    IMG_0005[1] (resized).JPG
    Resistors:
    [#47--#54] playfield switch return
    IMG_0006[1] (resized).JPG

    #5 9 months ago

    Resistors:
    [#55--#58] playfield switch strobes ST1 through ST4
    Note: PA0 ST0 (R133) is not stuffed. ST0 is out of sequence.
    I believe this is a leftover from the prototype development
    where the PIA used four outputs for the switch strobe,
    three outputs to read the dip switches and one line as
    a serial return input.
    IMG_0007[1] (resized).JPG

    #6 9 months ago

    Now on to the lower right side of the CPU board.
    Resistors:
    [#59--#61] cabinet switch test input with switch strobes ST0 & ST1
    Note: (R60) ST0 is now part of the NO. sequence.
    IMG_0008[1] (resized).JPG
    Resistors:
    [#62--#69] cabinet switch returns. PB0--PB7
    IMG_0009[1] (resized).JPG
    Now on to the upper left side of the CPU board.
    Resistors:
    [#70--#73] Lamp Address
    IMG_0010[1] (resized).JPG
    Resistors:
    [#74--#77] Lamp Data
    IMG_0011[1] (resized).JPG
    Resistors:
    [#78--#79] Lamp Strobe #1 & #2
    IMG_0012[1] (resized).JPG
    Lamp resistors are done and now onto the Displays.

    #7 9 months ago

    Lots of axial caps and resistors -- you need to find one of these to make life much, much easier.
    Adjust the knob until the two tips are into the mounting holes, insert device into notches on top, squeeze handle - perfectly bent leads with perfect fit. OK Industries LB-300. Out of production but once in awhile can find one on ebay.

    LB300_Side (resized).JPG
    #8 9 months ago
    Quoted from G-P-E:

    Lots of axial caps and resistors -- you need to find one of these to make life much, much easier.
    Adjust the knob until the two tips are into the mounting holes, insert device into notches on top, squeeze handle - perfectly bent leads with perfect fit. OK Industries LB-300. Out of production but once in awhile can find one on ebay. [quoted image]

    That is a cool tool.
    ---------------------
    "You need to find one of these to make life much, much easier".
    The components are removed one by one from the damaged OEM board.
    That is why I have the Hakko desoldering gun.
    Yes it is a pain... but at least I'm "recycling" to some degree.

    #9 9 months ago

    Resistors:
    [#80--#83] Display Segment (BCD) Data
    PIA U10 PA4--PA7
    IMG_0014[1] (resized).JPG
    Resistor:
    [#84] #1 Display Latch Strobe
    PIA U10 PA0
    IMG_0016[1] (resized).JPG
    Resistor:
    [#85] #2 Display Latch Strobe
    PIA U10 PA1
    IMG_0017[1] (resized).JPG
    Resistor:
    [#86] #3 Display Latch Strobe
    PIA U10 PA2
    IMG_0018[1] (resized).JPG
    Resistor:
    [#87] #4 Display Latch Strobe
    PIA U10 PA3
    IMG_0020[1] (resized).JPG
    Resistor:
    [#88] #5 Display Latch Strobe
    PIA U11 PA0
    IMG_0021[1] (resized).JPG
    Resistor:
    [#89] Display Blanking
    IMG_0022[1] (resized).JPG

    #10 9 months ago

    You must be bored out of your mind.

    #11 9 months ago

    With the 1st half of the Display resistors done, the board looks like this.
    IMG_0023[1] (resized).JPG
    Now to finish the upper left half of the DASH-35 board.
    U11 PA1--PA7
    Resistor:
    [#90] #7th Display Digit Enable/Sound Address "E"
    IMG_0024[1] (resized).JPG
    Resistors:
    [#91--#92] #6th,#5th Display Digit Enable
    IMG_0025[1] (resized).JPG
    Resistors:
    [#93--#96] #4,#3,#2,#1 Display Digit Enable
    IMG_0026[1] (resized).JPG
    All done for the Displays & Lamp resistors.
    IMG_0027[1] (resized).JPG
    Now on to the bottom left side of the DASH-35 board.

    #12 9 months ago

    Resistors:
    [#97--#100] Momentary Solenoid/Sound Data
    U11 PB0--PB3
    IMG_0028[1] (resized).JPG
    Resistors:
    [#101--#104] Continuous Solenoid Data
    U11 PB4--PB7
    IMG_0030[1] (resized).JPG
    Note: R105 N.U. open spot from early prototype.
    Resistor:
    [#106] Solenoid Bank/Sound Select
    IMG_0031[1] (resized).JPG
    Finished Solenoid resistors
    IMG_0032[1] (resized).JPG
    Now on to more miscellaneous resistors...

    #13 9 months ago

    Nice solder work

    #14 9 months ago

    Resistor:
    [#107]
    U11 CA2 L.E.D. drive & Lamp Strobe #2
    IMG_0033[1] (resized).JPG
    Back to the top right side of the board.
    Resistors:
    [#108--#111] PA4--PA1 Switch Strobes ST4--ST1.
    Note: Switch Strobe ST0 not part of number sequence.
    IMG_0034[1] (resized).JPG
    Board update...
    IMG_0035[1] (resized).JPG
    Now back down to the lower left side of the board.
    Resistor:
    [#112] Bleed resistor for VR1
    IMG_0036[1] (resized).JPG
    Resistor:
    [#113] +43V.D.C. input or Diode for phase A/B zero crossing.
    IMG_0038[1] (resized).JPG
    Onto the middle of the DASH 35 board.
    Resistors:
    [#114--#117] D0--D3 Data Lines.
    IMG_0040[1] (resized).JPG
    To be continued...

    #15 9 months ago

    Resistors:
    [#118--#121] D4--D7 Data Lines.
    IMG_0002[1] (resized).JPG
    Resistors:
    [#122--#130] A0--A8 Address Lines.
    IMG_0003[1] (resized).JPG
    Progress update...
    IMG_0004[1] (resized).JPG
    Resistor:
    [#131] part of TP1
    IMG_0005[1] (resized).JPG
    Finally ST0 gets some love...
    Resistors:
    [#132--#133] Switch Strobe ST0
    IMG_0006[1] (resized).JPG
    Progress update...
    IMG_0007[1] (resized).JPG
    Now back down to the middle bottom of the DASH 35 board.
    Resistor:
    [#134] IRQA / IRQB
    IMG_0008[2] (resized).JPG
    Back to the middle top...
    Resistors:
    [#135--#136] Halt / VMA
    IMG_0009[1] (resized).JPG
    Resistor:
    [#137] VUA-Ø2 / Enable
    IMG_0010[1] (resized).JPG
    Update again...
    IMG_0011[1] (resized).JPG
    Back down to the left of the board again...
    The resistor journey is almost done.
    Resistors:
    [#138--#139] Q5 conditioning resistors
    IMG_0012[1] (resized).JPG
    Finally the last resistor...
    Resistor:
    [#140]
    IMG_0013[1] (resized).JPG
    Oops, no picture of the resistor.
    Note: I found interesting, the board is stuffed with R1--R3 for Q1 and ends with R138--R140 for Q5.
    ------ The board's resistors start at one point and goes around the board and ends back where it started.
    ******************************
    On to the next component.... The Diodes.
    To be continued...

    #16 9 months ago
    Quoted from vec-tor:

    Note: I found interesting, the board is stuffed with R1--R3 for Q1 and ends with R138--R140 for Q5.
    ------ The board's resistors start at one point and goes around the board and ends back where it started.
    ******************************
    On to the next component.... The Diodes.
    To be continued...

    I've noticed the resistor / cap /diode designation numbering around the switches bounces around at last strobe like maybe they decided they needed more switches after the initial design but did not want to shift all the part numbering up so they count in order.

    Untitled (resized).png

    #17 9 months ago
    Quoted from barakandl:

    I've noticed the resistor / cap /diode designation numbering around the switches bounces around at last strobe like maybe they decided they needed more switches after the initial design but did not want to shift all the part numbering up so they count in order.
    [quoted image]

    I do not know if they had to keep some kind of resemblance to the original design that they had copyrighted.
    1) Four strobes for playfield switches.
    2) Three strobes for dip switches.
    3) One strobe for serial return communications.
    4) Some components no longer exist... hence the sequence jumping.

    #18 9 months ago

    That doesn't look like an ESD safe workstation.

    #19 9 months ago

    Diodes:
    [CR#1--CR#4] Switch Strobes ST1-ST4
    IMG_0014[1] (resized).JPG
    Diodes:
    [CR#5--CR#7] Feed to VAUX, Display Blanking, +5volt backfeed
    IMG_0015[1] (resized).JPG
    Diode:
    [CR#8] L.E.D.
    IMG_0016[1] (resized).JPG
    Diodes:
    [CR#9--CR#10] N.U.
    Diodes:
    [CR#11--CR#18] Upper Program DIP Switches
    IMG_0017[1] (resized).JPG
    Update
    IMG_0018[1] (resized).JPG
    Diodes:
    [CR#19--CR#26] Upper Middle Program DIP Switches
    IMG_0019[1] (resized).JPG
    Update
    IMG_0020[1] (resized).JPG
    Diodes:
    [CR#27--CR#34] Lower Middle Program DIP Switches
    IMG_0021[1] (resized).JPG
    Update
    IMG_0022[1] (resized).JPG
    Diodes:
    [CR#35--CR#42] Lower Program DIP Switches
    IMG_0023[1] (resized).JPG
    Update
    IMG_0024[1] (resized).JPG
    Diode:
    [CR#43] Switch Strobe ST0
    IMG_0025[1] (resized).JPG
    Now back down to the bottom CPU board...
    Diode:
    [CR#44 ] Diode for TP6
    IMG_0026[1] (resized).JPG
    Now to the middle of the CPU board...
    Diodes:
    [CR#45--CR#48] Data Lines D4-D7
    IMG_0027[1] (resized).JPG
    Finally
    Diode:
    [CR#49 ] Zero Crossing Detector
    IMG_0028[1] (resized).JPG
    Diodes Update
    IMG_0029[1] (resized).JPG
    Zener Diode:
    [VR#1]
    IMG_0030[1] (resized).JPG
    Inductors:
    [L#1--L#2]
    IMG_0031[1] (resized).JPG
    CPU board update, with all Resistors, Diodes, and Inductors.
    IMG_0032[1] (resized).JPG
    Note: at this point, it is a good practice to test the diodes for any faulty ones that may have ended
    up on the board.
    To be continued...

    #20 9 months ago

    Before you do any further semiconductor devices, please use a static mat or at minimum a wood bench / desk. I would not lay that board on the rug for any further pictures or work.

    1 month later
    #21 8 months ago

    Progress update...
    Capacitors:
    [C#1-- C#3]
    IMG_0001[1] (resized).JPG
    Now up to top of board
    Capacitor:
    [C#4]
    IMG_0001[1] (resized).JPG
    and back down...
    Capacitor:
    [C#5]
    IMG_0002[1] (resized).JPG
    then back up...
    Capacitors:
    [C#6-- C#7]
    IMG_0003[2] (resized).JPG
    now to the middle of the board...
    Capacitor:
    [C#8]
    and bottom left side...
    Capacitor:
    [C#9]
    IMG_0004[1] (resized).JPG
    back to the top right...
    Capacitor:
    [C#10]
    IMG_0005[1] (resized).JPG
    Board update, first ten caps. in place.
    IMG_0006[1] (resized).JPG
    On to the next set....
    back to the middle of the board...
    Capacitor:
    [C#11]
    IMG_0007[1] (resized).JPG
    to the bottom middle...
    Capacitors:
    [C#12--C#13]
    IMG_0008[1] (resized).JPG
    back to the top left, clock caps...
    Capacitors:
    [C#14--C#15]
    IMG_0009[1] (resized).JPG
    back down to the bottom right...
    Display Clock Freq. caps...
    Capacitors:
    [C#16--C#17]
    IMG_0010[1] (resized).JPG
    over to the left...
    finally Display Blanking cap.
    Capacitor:
    [C#18]
    IMG_0011[1] (resized).JPG
    Board update overview, capacitors
    eleven through eighteen in place.
    IMG_0012[1] (resized).JPG
    Break time, updates soon.

    7 months later
    #22 15 days ago

    As I was looking at an MPU repair in the wings I began thinking of this post.

    vec-tor any further progress on this journey?

    #23 15 days ago
    Quoted from emsrph:

    As I was looking at an MPU repair in the wings I began thinking of this post.
    vec-tor any further progress on this journey?

    It has been done... I have been lost here and there...I need to finish posting. LOL.
    I started on doing a Williams re-population... only got as far as the "b" caps.
    Thanks for the thoughts emsrph.

    #24 13 days ago

    O.K. back to the Dash 35 board...
    To the upper right side, are the capacitors to the switch matrix.
    Capacitors:
    [C#19--C#22]
    IMG_0013[1] (resized).JPG
    Capacitors:
    [C#23--C#26]
    IMG_0014[1] (resized).JPG
    This completes J2 switch return capacitors.
    Now to the capacitors for the switch strobes.
    Capacitors:
    [C#27--C#30A] strobe ST1-ST4, { Note: no ST0. [C79] }
    IMG_0015[1] (resized).JPG
    Board update overview, capacitors
    nineteen through thirty,A in place.
    IMG_0016[1] (resized).JPG
    This, for the most part, completes the switch matrix capacitors to J2.
    Now on to the next set of capacitors...

    #25 12 days ago

    Continuing on, capacitors for cabinet switches for J3.
    Capacitors:
    [C#30B--C#31--C#32] Note: #30B is ST0, #31 is ST1, &#32 is SELF TEST input.
    IMG_0017[1] (resized).JPG
    Next, J3 switch returns.
    Capacitors:
    [C#33--C#36]
    IMG_0018[1] (resized).JPG
    Capacitors:
    [C#37--C#40]
    IMG_0019[1] (resized).JPG
    Board update overview, capacitors
    thirty,B through forty in place.
    IMG_0020[1] (resized).JPG
    This completes the switch matrix capacitors to J3.
    Till next time...

    1 week later
    #26 3 days ago

    And now to the upper left side of the Dash 35 board.
    Lamp Address
    Capacitors:
    [C#41--C#44]
    IMG_0021[1] (resized).JPG
    Lamp Data
    Capacitors:
    [C#45--C#48]
    IMG_0022[1] (resized).JPG
    Lamp Strobe #1
    Capacitor:
    [C#49]
    IMG_0023[1] (resized).JPG
    Lamp Strobe #2
    Capacitor:
    [C#50]
    IMG_0024[1] (resized).JPG
    Board overview, lamp capacitors
    forty one through fifty in place.
    IMG_0025[1] (resized).JPG
    This completes the first part of the capacitors to J1.

    #27 3 days ago

    O.K. now comes the long post; for the capacitors used for the display circuitry.
    Display segment (BCD) data.
    Capacitors:
    [C#51--C#54]
    IMG_0026[1] (resized).JPG
    Display latch strobe #1
    Capacitor:
    [#55]
    IMG_0027[1] (resized).JPG
    Display latch strobe #2
    Capacitor:
    [#56]
    IMG_0028[1] (resized).JPG
    Display latch strobe #3
    Capacitor:
    [#57]
    IMG_0029[1] (resized).JPG
    Display latch strobe #4
    Capacitor:
    [#58]
    IMG_0030[1] (resized).JPG
    Display latch strobe #5.
    Capacitor:
    [#59]
    IMG_0031[1] (resized).JPG
    Display blanking.
    Capacitor:
    [#60]
    IMG_0032[1] (resized).JPG
    Finally, Display digit enable lines.
    Note:
    This first line is a dual purpose line.
    For 6 digit displays not used, AKA sound address "E".
    For 7 digit displays used.
    Capacitor:
    [#61]
    IMG_0033[1] (resized).JPG
    Display digit enable lines. #6,#5.
    Capacitors:
    [C#62--C#63]
    IMG_0034[1] (resized).JPG
    Display digit enable lines. #4 through #1.
    Capacitors:
    [C#64--C#67]
    IMG_0035[1] (resized).JPG
    Board overview, Display capacitors
    fifty one through sixty seven in place.
    IMG_0036[1] (resized).JPG
    This completes the capacitors for the connector J1.
    The capacitor sequence is almost done.

    #28 3 days ago
    Quoted from vec-tor:

    1) A bad Bally CPU

    How bad was it- any pictures? Corroded or just non-working?

    #29 3 days ago

    We had robots do this at the factory. Imagine needing 400 of these boards every day.

    #30 3 days ago
    Quoted from emsrph:

    How bad was it- any pictures? Corroded or just non-working?

    I got a set of eight Bally boards... sorted out what was in good shape to be repaired...
    Other boards where not so good... some had good components others where badly
    hacked up.....
    This board reconstruction project components, came from two to three boards... most of the components
    where in good shape... the PCB not so much.

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