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**Reel Slots** Gaming Machines => Universal Reel/Video Games => Topic started by: TopDogElec on May 19, 2018, 12:49:18 PM

Title: Sound problems on Universal 8116-2A MPU
Post by: TopDogElec on May 19, 2018, 12:49:18 PM

Not sure what the problem would be, sound chip or amplifier I cannot locate, but no sound at all from this machine. Any ideas where the amplifier if any is at on this? I thought I had read that it was behind the reels but I didn't see anything. It does look like the wires run into the mechanical counter box on the right side, could it be in there possibly? Anyone have any ideas?

Title: Re: Sound problems on Universal 8116-2A MPU
Post by: Badbaud on May 19, 2018, 07:10:55 PM

There should be a volume control knob on that same box on the right.

Title: Re: Sound problems on Universal 8116-2A MPU
Post by: TopDogElec on May 19, 2018, 07:18:45 PM

Yes there is, I thought about that after I posted it, will take it apart and look

Title: Re: Sound problems on Universal 8116-2A MPU
Post by: Badbaud on May 19, 2018, 08:17:41 PM

Check the speaker first with a Ohm meter, it should read about 8 Ohms.

Title: Re: Sound problems on Universal 8116-2A MPU
Post by: TopDogElec on May 22, 2018, 11:57:42 AM

There is no resistance at all across the terminals of the speaker, I am assuming it is dead then. I did read voltage across the terminals so it seems like a speaker replacement is needed. Thanks for the help, I appreciate it