Not much happening on F1, except that the hiss becomes even louder.
On F2 I hear some radio coming through, but it seems independent of the dialer.
If I only touch pin 1 of HA1137 (or pin 3 of F2) with the multimeter probe I hear radio coming through. But then again, turning the dialer knob has no effect on it.
The probe probably acts as an antenna. Does this mean that HA1137 is working and the problem should be in the circuit before HA1137?
On F2 I hear some radio coming through, but it seems independent of the dialer.
If I only touch pin 1 of HA1137 (or pin 3 of F2) with the multimeter probe I hear radio coming through. But then again, turning the dialer knob has no effect on it.
The probe probably acts as an antenna. Does this mean that HA1137 is working and the problem should be in the circuit before HA1137?
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