Hi,
I bought and built The Screamer kit but it doesnt work.
Using an audio probe, I noticed that the problem is related to the RC4558: thesound arrives correctly to the pin 3, but no sound comes out from the pin 1 or pin 2. Ialso noticed that the VBias without the RC4558 is 4.5 V, but only 2.3 V withthe chip installed.
I tried also with tl072cn (with this, Vb is correct but sound very distort with no mode to regulate gain and pot not working), tl072cp and tl471 but the problempersists. And no, I don't have an replacement for rc4558.
I desoldered every single resistance, diode (received 1n4007 and changed with 1n4001) and every cap to check it. I built it two times desoldering and soldering the pieces, but nothing.
Here attached the images.
What could be the problem?