• Atari Board Repair

    From Paul@pefjr@comcast.net to rec.games.pinball on Tuesday, September 01, 2020 23:04:33
    From Newsgroup: rec.games.pinball

    Does anyone work on Atari (Gen 2) boards? Or at least give me some
    advice on what may be wrong with this Superman I am currently working
    on. Plays good, sounds are off. LEDs on the cpu light as they should indicating it thinks its playing the right sound(s).

    Paul
    --- Synchronet 3.18a-Linux NewsLink 1.113
  • From John Robertson@spam@flippers.com to rec.games.pinball on Wednesday, September 02, 2020 12:55:46
    From Newsgroup: rec.games.pinball

    On 2020/09/01 8:04 p.m., Paul wrote:
    Does anyone work on Atari (Gen 2) boards? Or at least give me some
    advice on what may be wrong with this Superman I am currently working
    on. Plays good, sounds are off. LEDs on the cpu light as they should indicating it thinks its playing the right sound(s).

    Paul

    Hi Paul,

    Sounds are amplified by the Lamp/Sol/Audio board, did you check for
    12VDC at that test point?

    A simple audio tracer will help a lot here. There are many suggestions
    on youtube. I've played with using PC style amplified speakers with
    reasonable success.

    I also service Atari board, but try my suggestions first before shipping
    to Canada. Also check the speaker wiring from the Lamp/Sol/Audio board,
    you may have a simple connection problem!

    John :-#)#

    --
    (Please post followups or tech inquiries to the USENET newsgroup)
    John's Jukes Ltd.
    MOVED to #7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3
    (604)872-5757 (Pinballs, Jukes, Video Games)
    www.flippers.com
    "Old pinballers never die, they just flip out."
    --- Synchronet 3.18a-Linux NewsLink 1.113
  • From Paul@pefjr@comcast.net to rec.games.pinball on Friday, September 04, 2020 23:01:18
    From Newsgroup: rec.games.pinball

    On 9/2/2020 3:55 PM, John Robertson wrote:
    On 2020/09/01 8:04 p.m., Paul wrote:
    Does anyone work on Atari (Gen 2) boards? Or at least give me some
    advice on what may be wrong with this Superman I am currently working
    on. Plays good, sounds are off. LEDs on the cpu light as they should
    indicating it thinks its playing the right sound(s).

    Paul

    Hi Paul,

    Sounds are amplified by the Lamp/Sol/Audio board, did you check for
    12VDC at that test point?

    A simple audio tracer will help a lot here. There are many suggestions
    on youtube. I've played with using PC style amplified speakers with reasonable success.

    I also service Atari board, but try my suggestions first before shipping
    to Canada. Also check the speaker wiring from the Lamp/Sol/Audio board,
    you may have a simple connection problem!

    John :-#)#

    John,
    Have 12v (well, 10.9vdc) at the lamp/solenoid/audio board.

    I'm figuring something like this?

    https://www.youtube.com/watch?v=1GVZWRinypU

    Since the sound consists of the noise generator and waveform generator
    (The Atari sound setup on the mpu), I would test after these are
    combined to see if I hear proper sounds before going to the driver/audio board?

    Paul
    --- Synchronet 3.18a-Linux NewsLink 1.113
  • From John Robertson@spam@flippers.com to rec.games.pinball on Saturday, September 05, 2020 09:51:32
    From Newsgroup: rec.games.pinball

    On 2020/09/04 8:01 p.m., Paul wrote:
    On 9/2/2020 3:55 PM, John Robertson wrote:
    On 2020/09/01 8:04 p.m., Paul wrote:
    Does anyone work on Atari (Gen 2) boards? Or at least give me some
    advice on what may be wrong with this Superman I am currently working
    on. Plays good, sounds are off. LEDs on the cpu light as they should >>> indicating it thinks its playing the right sound(s).

    Paul

    Hi Paul,

    Sounds are amplified by the Lamp/Sol/Audio board, did you check for
    12VDC at that test point?

    A simple audio tracer will help a lot here. There are many suggestions
    on youtube. I've played with using PC style amplified speakers with
    reasonable success.

    I also service Atari board, but try my suggestions first before
    shipping to Canada. Also check the speaker wiring from the
    Lamp/Sol/Audio board, you may have a simple connection problem!

    John :-#)#

    John,
     Have 12v (well, 10.9vdc) at the lamp/solenoid/audio board.

    I'm figuring something like this?

    https://www.youtube.com/watch?v=1GVZWRinypU

    Since the sound consists of the noise generator and waveform generator > (The Atari sound setup on the mpu), I would test after these are
    combined to see if I hear proper sounds before going to the driver/audio board?

    Paul
    Hi Paul,
    Sorry, I'm not going to dig through a 14 minute video to try and figure
    out what you want me to see. Tell me the minute:second reference please!
    If the video talks about an audio sound tracer, then yes, that is what I suggest for following the audio...
    John :-#)#
    --
    (Please post followups or tech inquiries to the USENET newsgroup)
    John's Jukes Ltd.
    MOVED to #7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3
    (604)872-5757 (Pinballs, Jukes, Video Games)
    www.flippers.com
    "Old pinballers never die, they just flip out."
    --- Synchronet 3.18a-Linux NewsLink 1.113
  • From Paul@pefjr@comcast.net to rec.games.pinball on Saturday, September 05, 2020 23:04:57
    From Newsgroup: rec.games.pinball

    On 9/5/2020 12:51 PM, John Robertson wrote:
    On 2020/09/04 8:01 p.m., Paul wrote:
    On 9/2/2020 3:55 PM, John Robertson wrote:
    On 2020/09/01 8:04 p.m., Paul wrote:
    Does anyone work on Atari (Gen 2) boards? Or at least give me some
    advice on what may be wrong with this Superman I am currently
    working on. Plays good, sounds are off. LEDs on the cpu light as
    they should indicating it thinks its playing the right sound(s).

    Paul

    Hi Paul,

    Sounds are amplified by the Lamp/Sol/Audio board, did you check for
    12VDC at that test point?

    A simple audio tracer will help a lot here. There are many
    suggestions on youtube. I've played with using PC style amplified
    speakers with reasonable success.

    I also service Atari board, but try my suggestions first before
    shipping to Canada. Also check the speaker wiring from the
    Lamp/Sol/Audio board, you may have a simple connection problem!

    John :-#)#

    John,
      Have 12v (well, 10.9vdc) at the lamp/solenoid/audio board.

    I'm figuring something like this?

    https://www.youtube.com/watch?v=1GVZWRinypU

    Since the sound consists of the noise generator and waveform generator
    (The Atari sound setup on the mpu), I would test after these are
    combined to see if I hear proper sounds before going to the
    driver/audio board?

    Paul

    Hi Paul,

    Sorry, I'm not going to dig through a 14 minute video to try and figure
    out what you want me to see. Tell me the minute:second reference please!

    If the video talks about an audio sound tracer, then yes, that is what I suggest for following the audio...

    John :-#)#

    9:28 shows this guy making one out of a pc speaker
    12:37 shows him probing around on a video game board

    After watching where he probed around, made me think of where to go
    about on this Atari board, which is why I asked your opinion on where I
    should probe around. Thank you for any input.

    Paul
    --- Synchronet 3.18a-Linux NewsLink 1.113
  • From John Robertson@spam@flippers.com to rec.games.pinball on Saturday, September 05, 2020 22:28:24
    From Newsgroup: rec.games.pinball

    On 2020/09/05 8:04 p.m., Paul wrote:
    On 9/5/2020 12:51 PM, John Robertson wrote:
    On 2020/09/04 8:01 p.m., Paul wrote:
    On 9/2/2020 3:55 PM, John Robertson wrote:
    On 2020/09/01 8:04 p.m., Paul wrote:
    Does anyone work on Atari (Gen 2) boards? Or at least give me some >>>>> advice on what may be wrong with this Superman I am currently
    working on. Plays good, sounds are off. LEDs on the cpu light as
    they should indicating it thinks its playing the right sound(s).

    Paul

    Hi Paul,

    Sounds are amplified by the Lamp/Sol/Audio board, did you check for >>>> 12VDC at that test point?

    A simple audio tracer will help a lot here. There are many
    suggestions on youtube. I've played with using PC style amplified
    speakers with reasonable success.

    I also service Atari board, but try my suggestions first before
    shipping to Canada. Also check the speaker wiring from the
    Lamp/Sol/Audio board, you may have a simple connection problem!

    John :-#)#

    John,
      Have 12v (well, 10.9vdc) at the lamp/solenoid/audio board.

    I'm figuring something like this?

    https://www.youtube.com/watch?v=1GVZWRinypU

    Since the sound consists of the noise generator and waveform
    generator (The Atari sound setup on the mpu), I would test after
    these are combined to see if I hear proper sounds before going to the
    driver/audio board?

    Paul

    Hi Paul,

    Sorry, I'm not going to dig through a 14 minute video to try and
    figure out what you want me to see. Tell me the minute:second
    reference please!

    If the video talks about an audio sound tracer, then yes, that is what
    I suggest for following the audio...

    John :-#)#

    9:28 shows this guy making one out of a pc speaker
    12:37 shows him probing around on a video game board

    After watching where he probed around, made me think of where to go
    about on this Atari board, which is why I asked your opinion on where I should probe around. Thank you for any input.

    Paul
    Hi Paul,
    Yes, that can work - using a PC speaker - but they aren't terribly
    sensitive to low volume sounds.
    As for where to probe, you need to use the schematic and then use that
    to help identify the audio sections and ICs and use the probe while
    attempting to make sounds.
    John :-#)#
    --
    (Please post followups or tech inquiries to the USENET newsgroup)
    John's Jukes Ltd.
    MOVED to #7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3
    (604)872-5757 (Pinballs, Jukes, Video Games)
    www.flippers.com
    "Old pinballers never die, they just flip out."
    --- Synchronet 3.18a-Linux NewsLink 1.113
  • From Paul@pefjr@comcast.net to rec.games.pinball on Thursday, September 10, 2020 22:09:50
    From Newsgroup: rec.games.pinball

    On 9/6/2020 1:28 AM, John Robertson wrote:
    On 2020/09/05 8:04 p.m., Paul wrote:
    On 9/5/2020 12:51 PM, John Robertson wrote:
    On 2020/09/04 8:01 p.m., Paul wrote:
    On 9/2/2020 3:55 PM, John Robertson wrote:
    On 2020/09/01 8:04 p.m., Paul wrote:
    Does anyone work on Atari (Gen 2) boards? Or at least give me some >>>>>> advice on what may be wrong with this Superman I am currently
    working on. Plays good, sounds are off. LEDs on the cpu light as
    they should indicating it thinks its playing the right sound(s).

    Paul

    Hi Paul,

    Sounds are amplified by the Lamp/Sol/Audio board, did you check for >>>>> 12VDC at that test point?

    A simple audio tracer will help a lot here. There are many
    suggestions on youtube. I've played with using PC style amplified
    speakers with reasonable success.

    I also service Atari board, but try my suggestions first before
    shipping to Canada. Also check the speaker wiring from the
    Lamp/Sol/Audio board, you may have a simple connection problem!

    John :-#)#

    John,
      Have 12v (well, 10.9vdc) at the lamp/solenoid/audio board.

    I'm figuring something like this?

    https://www.youtube.com/watch?v=1GVZWRinypU

    Since the sound consists of the noise generator and waveform
    generator (The Atari sound setup on the mpu), I would test after
    these are combined to see if I hear proper sounds before going to
    the driver/audio board?

    Paul

    Hi Paul,

    Sorry, I'm not going to dig through a 14 minute video to try and
    figure out what you want me to see. Tell me the minute:second
    reference please!

    If the video talks about an audio sound tracer, then yes, that is
    what I suggest for following the audio...

    John :-#)#

    9:28 shows this guy making one out of a pc speaker
    12:37 shows him probing around on a video game board

    After watching where he probed around, made me think of where to go
    about on this Atari board, which is why I asked your opinion on where
    I should probe around. Thank you for any input.

    Paul

    Hi Paul,

    Yes, that can work - using a PC speaker - but they aren't terribly
    sensitive to low volume sounds.
    As for where to probe, you need to use the schematic and then use that
    to help identify the audio sections and ICs and use the probe while attempting to make sounds.

    John :-#)#

    John,

    I made my probe and started poking around after looking over the
    schematics and reading the manual.

    So Atari did not screen the boards with what component is what. (kinda
    like Williams did back in the system 3-7 era, but Williams at least
    provided board layout and labeled every component in the schematics).

    I looked around and can find nothing like this for the Atari boards.
    Makes it hard when you read the schematic and manual and go to test Q2
    and have kind of zero idea where it is.

    So, by chance do you have such a layout of these boards?

    Paul

    --- Synchronet 3.18a-Linux NewsLink 1.113
  • From John Robertson@spam@flippers.com to rec.games.pinball on Thursday, September 10, 2020 23:18:27
    From Newsgroup: rec.games.pinball

    On 2020/09/10 7:09 p.m., Paul wrote:
    On 9/6/2020 1:28 AM, John Robertson wrote:
    On 2020/09/05 8:04 p.m., Paul wrote:
    On 9/5/2020 12:51 PM, John Robertson wrote:
    On 2020/09/04 8:01 p.m., Paul wrote:
    On 9/2/2020 3:55 PM, John Robertson wrote:
    On 2020/09/01 8:04 p.m., Paul wrote:
    Does anyone work on Atari (Gen 2) boards? Or at least give me
    some advice on what may be wrong with this Superman I am
    currently working on. Plays good, sounds are off. LEDs on the cpu >>>>>>> light as they should indicating it thinks its playing the right >>>>>>> sound(s).

    Paul

    Hi Paul,

    Sounds are amplified by the Lamp/Sol/Audio board, did you check
    for 12VDC at that test point?

    A simple audio tracer will help a lot here. There are many
    suggestions on youtube. I've played with using PC style amplified >>>>>> speakers with reasonable success.

    I also service Atari board, but try my suggestions first before
    shipping to Canada. Also check the speaker wiring from the
    Lamp/Sol/Audio board, you may have a simple connection problem!

    John :-#)#

    John,
      Have 12v (well, 10.9vdc) at the lamp/solenoid/audio board.

    I'm figuring something like this?

    https://www.youtube.com/watch?v=1GVZWRinypU

    Since the sound consists of the noise generator and waveform
    generator (The Atari sound setup on the mpu), I would test after
    these are combined to see if I hear proper sounds before going to
    the driver/audio board?

    Paul

    Hi Paul,

    Sorry, I'm not going to dig through a 14 minute video to try and
    figure out what you want me to see. Tell me the minute:second
    reference please!

    If the video talks about an audio sound tracer, then yes, that is
    what I suggest for following the audio...

    John :-#)#

    9:28 shows this guy making one out of a pc speaker
    12:37 shows him probing around on a video game board

    After watching where he probed around, made me think of where to go
    about on this Atari board, which is why I asked your opinion on where
    I should probe around. Thank you for any input.

    Paul

    Hi Paul,

    Yes, that can work - using a PC speaker - but they aren't terribly
    sensitive to low volume sounds.
    As for where to probe, you need to use the schematic and then use that
    to help identify the audio sections and ICs and use the probe while
    attempting to make sounds.

    John :-#)#

    John,

     I made my probe and started poking around after looking over the schematics and reading the manual.

     So Atari did not screen the boards with what component is what. (kinda like Williams did back in the system 3-7 era, but Williams at least
    provided board layout and labeled every component in the schematics).

    I looked around and can find nothing like this for the Atari boards.
    Makes it hard when you read the schematic and manual and go to test Q2 > and have kind of zero idea where it is.

    So, by chance do you have such a layout of these boards?

    Paul

    Hi Paul,
    The parts manual for the game shows the locations of the components.
    You could try the audio tracer on the audio ICs first, to hear what sort of sounds you are getting there.
    John :-#)#
    --
    (Please post followups or tech inquiries to the USENET newsgroup)
    John's Jukes Ltd.
    MOVED to #7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3
    (604)872-5757 (Pinballs, Jukes, Video Games)
    www.flippers.com
    "Old pinballers never die, they just flip out."
    --- Synchronet 3.18a-Linux NewsLink 1.113
  • From Paul@pefjr@comcast.net to rec.games.pinball on Friday, September 11, 2020 23:18:00
    From Newsgroup: rec.games.pinball

    On 9/11/2020 2:18 AM, John Robertson wrote:
    On 2020/09/10 7:09 p.m., Paul wrote:
    On 9/6/2020 1:28 AM, John Robertson wrote:
    On 2020/09/05 8:04 p.m., Paul wrote:
    On 9/5/2020 12:51 PM, John Robertson wrote:
    On 2020/09/04 8:01 p.m., Paul wrote:
    On 9/2/2020 3:55 PM, John Robertson wrote:
    On 2020/09/01 8:04 p.m., Paul wrote:
    Does anyone work on Atari (Gen 2) boards? Or at least give me >>>>>>>> some advice on what may be wrong with this Superman I am
    currently working on. Plays good, sounds are off. LEDs on the >>>>>>>> cpu light as they should indicating it thinks its playing the >>>>>>>> right sound(s).

    Paul

    Hi Paul,

    Sounds are amplified by the Lamp/Sol/Audio board, did you check >>>>>>> for 12VDC at that test point?

    A simple audio tracer will help a lot here. There are many
    suggestions on youtube. I've played with using PC style amplified >>>>>>> speakers with reasonable success.

    I also service Atari board, but try my suggestions first before >>>>>>> shipping to Canada. Also check the speaker wiring from the
    Lamp/Sol/Audio board, you may have a simple connection problem!

    John :-#)#

    John,
      Have 12v (well, 10.9vdc) at the lamp/solenoid/audio board.

    I'm figuring something like this?

    https://www.youtube.com/watch?v=1GVZWRinypU

    Since the sound consists of the noise generator and waveform
    generator (The Atari sound setup on the mpu), I would test after
    these are combined to see if I hear proper sounds before going to >>>>>> the driver/audio board?

    Paul

    Hi Paul,

    Sorry, I'm not going to dig through a 14 minute video to try and
    figure out what you want me to see. Tell me the minute:second
    reference please!

    If the video talks about an audio sound tracer, then yes, that is
    what I suggest for following the audio...

    John :-#)#

    9:28 shows this guy making one out of a pc speaker
    12:37 shows him probing around on a video game board

    After watching where he probed around, made me think of where to go
    about on this Atari board, which is why I asked your opinion on
    where I should probe around. Thank you for any input.

    Paul

    Hi Paul,

    Yes, that can work - using a PC speaker - but they aren't terribly
    sensitive to low volume sounds.
    As for where to probe, you need to use the schematic and then use
    that to help identify the audio sections and ICs and use the probe
    while attempting to make sounds.

    John :-#)#

    John,

      I made my probe and started poking around after looking over the
    schematics and reading the manual.

      So Atari did not screen the boards with what component is what.
    (kinda like Williams did back in the system 3-7 era, but Williams at
    least provided board layout and labeled every component in the
    schematics).

    I looked around and can find nothing like this for the Atari boards.
    Makes it hard when you read the schematic and manual and go to test Q2
    and have kind of zero idea where it is.

    So, by chance do you have such a layout of these boards?

    Paul


    Hi Paul,

    The parts manual for the game shows the locations of the components.

    You could try the audio tracer on the audio ICs first, to hear what sort
    of sounds you are getting there.

    John :-#)#

    John,
    Any chance of getting a scan or picture of that? Not the entire parts manual, but for the MPU and solenoid/lamp/audio boards please. It would
    make it so much easier knowing what parts is what.

    Paul

    --- Synchronet 3.18a-Linux NewsLink 1.113