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(Topic ID: 272497)

Squawk &talk quotes but no sound


By Pinballark

3 months ago



Topic Stats

  • 6 posts
  • 3 Pinsiders participating
  • Latest reply 3 months ago by Pinballark
  • Topic is favorited by 1 Pinsider

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20200707_225906 (resized).jpg

#1 3 months ago

Hi
I really need help to fix this.
I have had my S&T board in a friends Fathom, and it acts the same as in my Fathom...so it must be at the S&T board.
#No sound or quotes when I test inside the coindor.
# All quotes work when I use the test at the board, but no sound
# At gameplay all quotes work, no sound.
Have replaced most of the smaller capacitors recommended from here.
I also swapped u7/u11 to test (no u12 is used in Fathom)
Have checked solderings and resolder J1

Any idea?
BIG thanks for any help/input
//Stefan

#2 3 months ago

dirty pots?

#3 3 months ago

All non-voice sounds are created by the AD558 DAC when there is no AY-3-89xx chip installed. The socket used for the AD558 is always loose and generally a problem. I’d replace the socket. I’d also swap a known good AD558 in.

Chris Hibler - CARGPB #31
Http://chrishiblerpinball.com/contact
http://www.PinWiki.com/ - The new place for pinball repair info

#4 3 months ago

Thanks.
Wdennie...the pots are new
ChrisHibler...will remove, clean AD558 and resolder the socket, as soon as I get home later on.
Thrilled

#5 3 months ago

The socket should be replaced.

Chris Hibler - CARGPB #31
Http://chrishiblerpinball.com/contact
http://www.PinWiki.com/ - The new place for pinball repair info

#6 3 months ago
Quoted from ChrisHibler:

The socket should be replaced.

Chris Hibler - CARGPB #31
Http://chrishiblerpinball.com/contact
http://www.PinWiki.com/ - The new place for pinball repair info

Yees!
It works perfect and sounds great.
Resolder and cleaned AD 558, was the sollution.
Big Thanks and take care

20200707_225906 (resized).jpg

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