(Topic ID: 267177)

Williams system 9 speech

By Mibagent_x

3 years ago


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You're currently viewing posts by Pinsider chrishibler.
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#14 3 years ago

Resistors measured in circuit almost never measure the resistance of the part correctly as mentioned above. A resistor is the very last part to suspect.

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

#33 3 years ago

If you want to mule that board pair up to me in St Louis, I can take care of it.
Happy to help.

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

#35 3 years ago

My money is on the Harris chip on the speech board. It's a 55516 or 55536.
My guess is that it has failed.
--
Chris Hibler - CARGPB #31
http://www.ChrisHiblerPinball.com/Contact
http://www.PinWiki.com - The Place to go for Pinball Repair Info

#36 3 years ago

Did you replace C1 and/or C12? Both of them are in series of the speech signal.
--
Chris Hibler - CARGPB #31
http://www.ChrisHiblerPinball.com/Contact
http://www.PinWiki.com - The Place to go for Pinball Repair Info

#39 3 years ago

The parts have different substitutes. The Marco chip will work fine.
But...I'd be very careful removing the existing chip. You don't want to damage the rare chip, just in case it's still good.
Yes. I've seen them fail in just the way you describe.
Yes. They are pricey as they are long obsolete.
--
Chris Hibler - CARGPB #31
http://www.ChrisHiblerPinball.com/Contact
http://www.PinWiki.com - The Place to go for Pinball Repair Info

#47 3 years ago

The one on the speech board pictured here should last through the rapture... -40 to 85 C. Wow.
https://www.pinwiki.com/wiki/images/5/57/WilliamsType2SoundAndSpeechBoarfPair.jpg
--
Chris Hibler - CARGPB #31
http://www.ChrisHiblerPinball.com/Contact
http://www.PinWiki.com - The Place to go for Pinball Repair Info

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