PJ wrote:
Dave Plowman (News) wrote:

Can you open up the modulator and trace the wiring?

That's plan B. Here goes...

... later.

Four wires terminating at a socket on the modulator PCB. Each pin is
labeled on the PCB, although the labels are partially obscured by the
socket. They appear to read (with corresponding wire colours):

A (Red) Audio

G (Brown) Ground

V (White) Video

B (Black) Earth


--
Sir Benjamin Middlethwaite

Women are like old TV's...the older they get the more prone they are to
switching off.