TECH: Bally Playboy sound volume?

David Gersic

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Jul 6, 2010, 1:04:19 AM7/6/10

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Sound works, and you can hear it, but the volume pot adjustment ranges
from "dead silent" to "drowned out by casual conversation". I'm not looking
to compete with Korn's BK2K, but this thing wouldn't have been heard over
the noise of the change machine in the arcade, much less the other games,
so this can't be right. Anybody run in to this before?

fordiesel69

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Jul 6, 2010, 6:43:12 AM7/6/10

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Replace volume and sustain pots.

Replace OP amp. Look in the book for where it is located.

CEG

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Jul 6, 2010, 9:12:52 AM7/6/10

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On Jul 6, 1:04 am, David Gersic <usenet_spam_t...@zaccaria-

I don't know if Playboy is the same, but my Bally Special Force has
two volume controls. One at the coin door, and one on the sound board.

David Gersic

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Jul 7, 2010, 1:58:25 AM7/7/10

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On Tue, 6 Jul 2010 03:43:12 -0700 (PDT), fordiesel69 <fordi...@aol.com> wrote:
> Replace volume and sustain pots.

The pots seem to be ok. No dead spots or other obvious problems.

> Replace OP amp. Look in the book for where it is located.

Which one? I'm looking at the schematics here:

http://www.zaccaria-pinball.com/temp/Playboy.png

and it looks to me like there are two op amps in the output stage of the
circuit. Which one are you referring to?

--
| David Gersic http://www.zaccaria-pinball.com |

| They didn't want it good, they wanted it Wednesday. |

David Gersic

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Jul 7, 2010, 1:59:04 AM7/7/10

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On Tue, 6 Jul 2010 06:12:52 -0700 (PDT), CEG <cor...@comcast.net> wrote:
> I don't know if Playboy is the same, but my Bally Special Force has
> two volume controls. One at the coin door, and one on the sound board.

http://www.zaccaria-pinball.com/temp/Playboy.png

Yeah, you'd expect that, but Playboy doesn't have a coin door area volume
pot, just the one on the sound board itself.

--
| David Gersic http://www.zaccaria-pinball.com |

| I still don't have a handle on life, but I have its FCB. |

fordiesel69

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Jul 7, 2010, 5:10:07 PM7/7/10

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The 741 is usually the one.

fordiesel69

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Jul 8, 2010, 10:21:46 PM7/8/10

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How did you make out? Any luck?

fordiesel69

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Jul 24, 2010, 7:04:00 PM7/24/10

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Again. Any luck with this?

David Gersic

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Jul 24, 2010, 9:12:01 PM7/24/10

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On Sat, 24 Jul 2010 16:04:00 -0700 (PDT), fordiesel69 <fordi...@aol.com> wrote:
> Again. Any luck with this?

Not yet. I was out of town for a couple of weeks. I'll post a followup
when I get the opamp replaced.

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| David Gersic http://www.zaccaria-pinball.com |

| IMHO: I Maniacally Hurt Others...? |

David Gersic

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Aug 17, 2010, 4:05:46 AM8/17/10

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On Wed, 7 Jul 2010 14:10:07 -0700 (PDT), fordiesel69 <fordi...@aol.com> wrote:
> The 741 is usually the one.

Ok, sorry for the *really* late reply here, but I did want to follow up
and close this thread. I changed the 741, and the volume improved. It's
still not all that loud, but it's ok.

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| David Gersic http://www.zaccaria-pinball.com |

| Windows: A problem to a solution that was never needed. |

GaryTheNoTrashCougar

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Sep 2, 2010, 5:06:16 PM9/2/10

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On Aug 17, 3:05 am, David Gersic <usenet_spam_t...@zaccaria-
pinball.com> wrote:

> On Wed, 7 Jul 2010 14:10:07 -0700 (PDT), fordiesel69 <fordiese...@aol.com> wrote:
> > The 741 is usually the one.
>
> Ok, sorry for the *really* late reply here, but I did want to follow up
> and close this thread. I changed the 741, and the volume improved. It's
> still not all that loud, but it's ok.
>
> --
> | David Gersic http://www.zaccaria-pinball.com|
> | Windows: A problem to a solution that was never needed. |
> | Email address is a spam trap. Visit the web site for contact info. |

Did you try and replace the 380 as well? I am having the same issue.
Thanks,
--Scott