[sdiy] Pro One Issue/Question....

[Scott Juskiw]

Attack time is set by the voltage on pin 15 of U117 (CEM3310). Minimum  
attack suggests the voltage on that pin is stuck at 0 volts. There's  
not much connected to this pin that could go wrong, unless it's the  
3310 itself. Check for bad connections around R1206 and the attack  
pot. The voltage on pin 15 should go more negative as the attack pot  
is rotated CW.

On 13-Jul-08, at 9:50 PM, James Elliott wrote:

> Hello, the attack on my amp envelope on my pro one "died" the other  
> day (it is stuck on minimum attack). Any ideas as to what it might  
> be? The Decay, Sustain, and Release elements seem to function fine.
>
> Thanks,
> Jim