I have a mixer circuit that I bread boarded and it worked but when I built a PWB and assembled it, it doesn't anymore.
I was wondering if anyone experienced this symptom in an audio circuit....
1) I power up the circuit (9VDC).
2) It works for about 3 to 5 seconds.
3) You hear a swooshing sound for about 1 to 2 seconds.
4) It stops working.
5) If I turn it off and them back on, it repeats the symptoms.
I am puzzled....
I was wondering if anyone experienced this symptom in an audio circuit....
1) I power up the circuit (9VDC).
2) It works for about 3 to 5 seconds.
3) You hear a swooshing sound for about 1 to 2 seconds.
4) It stops working.
5) If I turn it off and them back on, it repeats the symptoms.
I am puzzled....