[thx1138]

Digging around in bottom right of underside I came across I assume a resistor somewhat cooked. Does anyone know the value of this or recognise it.
Its directly underneath the if coil on a tag strip.
See attached photo.
Am still investigating the bfo issue.

On another thing I removed the watch holder but cannot unscrew it. Trying as carefully to heat it and it still won't budge. I have a watch to go into it so hence the need to open it.