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I'm posting this as it might help some others if this problem shows up:
I have an ADC 3160 A at home. It's my wife's practice organ. The other day she complained that it was playing multiple notes at a time and some times made funny noises. Putting my sometimes anal logical mind to work I observed the following:
Turning off and on made it go away - sometimes - but always came back. Without playing any keys, it would suddenly begin to "talk" to me sounding like R2D2 the robot!
It happened sometimes or not on most of the stops. It happened on any division randomly. From that I decided the problem was a common factor to everything. Could not be the audio path as that is basically 4 independent channels. The sounds were reminiscent of stops, therefore they must be getting generated in the cage randomly. The only thing that I figured was what controlled the cage was the data bus into the cage which doesn't care who triggered it. So that data cable is common to everything. It loops through several boards where it collects data to present to the sound cage. Noise is also data. Bad connections make noise. I cleaned all those connections: Problem Gone!
Remember what Jbird says: before you go too crazy - Clean Connections!!
Thanks John for al your good lessons!
The other John
I have an ADC 3160 A at home. It's my wife's practice organ. The other day she complained that it was playing multiple notes at a time and some times made funny noises. Putting my sometimes anal logical mind to work I observed the following:
Turning off and on made it go away - sometimes - but always came back. Without playing any keys, it would suddenly begin to "talk" to me sounding like R2D2 the robot!
It happened sometimes or not on most of the stops. It happened on any division randomly. From that I decided the problem was a common factor to everything. Could not be the audio path as that is basically 4 independent channels. The sounds were reminiscent of stops, therefore they must be getting generated in the cage randomly. The only thing that I figured was what controlled the cage was the data bus into the cage which doesn't care who triggered it. So that data cable is common to everything. It loops through several boards where it collects data to present to the sound cage. Noise is also data. Bad connections make noise. I cleaned all those connections: Problem Gone!
Remember what Jbird says: before you go too crazy - Clean Connections!!
Thanks John for al your good lessons!
The other John
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