Re: Vanguard pink noise

Kevin Moore wrote:
> Hello all,
>
> Working on a Vanguard, that has pink noise / static throughout the
> game play. All sounds, and voice are present, just a constant
> background static noise. At first I thought it was due to a bad
> MB3712 audio amp, but replacing it did not help. I've re-capped the
> power supply, and no change. So I'm wondering if anyone has
> experienced this problem on Centuri / Vanguard before.
>
> Thanks,
>
> Kevin
>
Try removing the volume control - if the noise leaves then something
ahead of the volume control is the problem. Then use the schematic to
isolate the various sound sources (lift resistors or capacitors that
connect to the input side of the volume control) until you find the
guilty party...

John :-#)#

-- 
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Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames)
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