My point is to understand what path does the signal take from the phono connection to the speaker.
It's easy to see...
Locate S1 Section 1, the phono switch. It could be mis-drawn. The switch is in the radio position and connects the detector coil to pin 11. R15 is the volume control and always connected to the switch slider via pin 10. When pressed the slider bar on the switch moves down and pin 3 now connects to the slider, which then connects the phono input to the hot side of the volume control. It makes more sense if the radio detector coil is on pin 12 so it disconnects when in phono, but maybe there's a reason for the way it's drawn........ (?)
BTW: I have a hunch if you mod the amplifier section to sound more like a gitar amp you won't be happy with how the radio sounds.
I understand the way you explain it to me. I had a hard time understanding why pin 11 remained connected.
As for the sound of the radio once the mods are done; i was thinking of adding some sort of switch and some alternate circuit to switch between radio and guitar amp mode.
Thanks for the info and i will keep studing the posibilities.
Take care for now and 73 de VE2ITZ