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(Topic ID: 262792)

System 80 sound S16 issues

By ryan1234

9 months ago

Topic Stats

  • 23 posts
  • 6 Pinsiders participating
  • Latest reply 9 months ago by solarvalue
  • Topic is favorited by 3 Pinsiders


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There have been 8 images uploaded to this topic. (View topic image gallery).

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#1 9 months ago

This is driving me nuts-
I have recently purchased a Amazon Hunt- every sound works except for the back ground sound (Drums for Amazon Hunt- I REALLY want the drums)
I have used the self-test, solenoid test- at the end it scrolls through the 5 sound enables- S1, S2, S4, S8 all make sound, S16 does not.
It appears that S16 is a little different and runs through the lamp drivers.
For some reason the test button on this board does nothing... I checked it for continuity-the button works, nothing happens.
Things I have tried and willing to try for a fifth time if someone thinks I missed something.
1. Replaced Q10 (the transistor for S16) on the driver board
2. jumpered Q10 (took to ground as if it was active.)
3. Replaced U16 on sound board
4. Replaced U24 on sound board
5. triple checked all power to sound board
6. checked continuity on dip switch 5 on sound board (this turns background sound on/off)
7. cleaned and checked continuity on all edge connectors and connections between sound board and driver board. (S16 run wire runs through a lot of connectors)
8. Ran pin 2 on A6-J1 to ground- nothing....
9. pulled hanfull of hair out.
any thoughts would be greatly appreciated.

#2 9 months ago

Amazon Hunt used a few different sound boards- here is what mine looks like-

image (resized).jpg
#3 9 months ago

There are two potentiomters on this sound board. The obvious one at the top center of the board, and the less obvious rectangular one in the bottom right corner. Have you tried adjusting the one in the corner?

#4 9 months ago

Did you check dip switch 32 on the MPU? ) It also turns the background sound off on some games (not sure about Amazon Hunt).

#5 9 months ago

Tried dip switch 32- nothing... the manual also states that this switch is not used
Tried both potentiometers- the top one was easy to turn, full one way and back, the bottom one I gave a few turns in both directions- nothing...
Thanks for the thoughts.

#6 9 months ago
Quoted from ryan1234:

Tried dip switch 32- nothing... the manual also states that this switch is not used

Is there another dip switch on the mpu that controls the background sound?

#7 9 months ago

I am not sure if there is another dip switch? The manual does not mention any other dip switches for background sound-besides the one on the sound board- #5 needs to be on.
I have basically eliminated the MPU when I ran Q10 to ground...
Still open to anything.

#8 9 months ago

Do you have a schematic for the sound board you could post?

Also what MPU does yours have?

#9 9 months ago

i had an amazon hunt and there was a couple dip switches that turned the background on and off. Cant remember if it was mpu or sound board.

#10 9 months ago

I would love it to be something as simple as a wrong dip switch...
Here is some pics-

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#11 9 months ago

Here is the dip switch settings for the MPU in the manual and the dip switch setting for the sound board.

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#12 9 months ago

Shut switch 32 on the mpu off, then try it
That should work

#13 9 months ago

Last switch to the right
Also leave switch 1- 5 on soundboard on

#14 9 months ago
Screenshot_20200225-193908 (resized).png
#15 9 months ago

I have always has Dip Switch 32 off until trying it tonight. It is now off.
On the sound board- I tried 1-5 turned on but turning on #1 puts it in a test mode where it has constant sound (the same sound repeats over and over)
I turned off #1 and left the rest on and still no drums...

#16 9 months ago

Ok try this. 1,2,7,8 on soundboard turned off

#17 9 months ago

Just looked at your pictures. Looks like that what you have, my bad

#18 9 months ago

Ok, one more thing to try, sw 29 and 31 also off on mpu

#19 9 months ago

Ok- trying 29 and 31 off and no change.
Kba78- it looks like your manual is from a aftermarket MPU- They do not look the same dip switch configuration as mine.

#20 9 months ago

Mine was from a different game, I was just trying different configurations. I could of swore that having 32 off would do it

#21 9 months ago

Bump for the day shift.

#22 9 months ago

Anybody have anything else to try?

#23 9 months ago

Only thing I can think of is borrow another sound board to swap in to see if that resolves the issue.

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