ok thank you. since we do not have this IC17 here. i was thinking of doing a transistor array.If all caps hv been changed then highly possible the culprit is IC 17.
I have the circuir equivalent of the STA...
its 4 NPN general purpose. i found a transistor that have the same specs. i was thinking to put this 4 transistors together and have the pin assignments the same as the IC17
have anyone tried this.