Thanks for replying.
As you recommended, I did solder the pin3 to ping4 but still same result, bypassed signal. I even changed both TL072 and PT to a newer set since I have them socketed.
If this helps, I did the voltage readings for both chip's pins as following, noting that I powered it with a 9v battery.
p3, 0v Grounded
p4, 0v Soldered to pin3
p5, 2.90v ------- > Strangely receiving voltage even it is not connected to anything, probably internally?
p9, 0v Grounded
p10, 0.01v ------- > Is this right?
p11, 0.35v ------- > Is this right?
p14, 0.28v ------- > Is this right?
And the TL072 chip readings:
And the voltage regulator am using is L78050v with readings on pin1 = 7.2v, pin2 = 0 Ground, pin3 = 5.02v
Also if this is of any use or a clue that even with the power switch in off position, all pins still show the same readings mentioned above !!
Appreciate your follow up in advance.