(Topic ID: 87199)

Apollo 13 weird speaker test behavior


By pbjack

6 years ago



Topic Stats

  • 1 post
  • 1 Pinsider participating
  • No one calls this topic a favorite

You

Linked Games

#1 6 years ago

Hello experts!

I bought a Sega Apollo 13 a few weeks ago and I noticed that the CPU/Sound board had been changed by the previous owner to a more recent revision. The original board was a 520-5136-00 REV D (with 3 amps) but the one in my pin is REV E (with 2 amps) which corresponds to part number 520-5136-16. As a result, I had no sound coming out of my right backbox speaker. I then decided to add the 3rd amp components to get the stereo output, as described at the link below:

http://www.pinballnews.com/learn/speaker/

It worked, well kind of. When I perform the individual left speaker test from the diagnostics menu, I also hear sound coming out of the right speaker and vice-versa.

This definitely does not appear to be normal behavior (or is it?) and I have not found what might be causing it. Any help would be greatly appreciated.

Thanks!!!

Jacques

PS: I also changed the R106 and R110 resistors as mentioned in the Stern service bulletin for this particular board (which I assume comes from a Monopoly pin)

Promoted items from the Pinside Marketplace
From: $ 369.95
Boards
PinSound
$ 50.00
From: $ 20.00
Cabinet - Other
Rock Custom Pinball
From: $ 40.00
Cabinet - Other
Rock Custom Pinball
$ 99.00
Playfield - Other
Arcade Upkeep
$ 12.50
Cabinet - Sound/Speakers
Gweem's Mods
$ 35.00
Cabinet - Other
Arcade Upkeep
$ 25.00
Boards
nvram.weebly.com
From: $ 18.00
Apparel - Men
Pinside Shop
$ 89.99
Lighting - Led
Lighted Pinball Mods
$ 40.00
Gameroom - Decorations
Arcade Arts
$ 221.00
Cabinet Parts
Tilted Pinball
From: $ 42.00
Cabinet - Shooter Rods
ModFather Pinball Mods
From: $ 7.00
From: $ 33.00
Gameroom - Decorations
Rocket City Pinball
From: $ 5.00
Cabinet - Other
UpKick Pinball
$ 39.95
Playfield - Toys/Add-ons
Hookedonpinball.com
$ 49.99
$ 30.00
Playfield - Other
YouBentMyWookie
$ 79.99
Cabinet - Shooter Rods
Lighted Pinball Mods
$ 79.99
Cabinet - Armor And Blades
PinGraffix Pinside Shop

Hey there! Got a moment?

Great to see you're enjoying Pinside! Did you know Pinside is able to run thanks to donations from our visitors? Please donate to Pinside, support the site and get anext to your username to show for it! Donate to Pinside