Well, you can scratch the "F1" component from the "does it switch the vid mode" list...nope it doesn't!
Due to the slightly more "tidy" design of the mainboard on the Radica UK units, the extra "F1" component is simply a "link" for the V+ on the mainboard.
In short, the U.K. Radica won't even power up without it (you effectively "disconnect" the power if you remove "F1").
On the up side, if anyone is re-casing their Radica when modding - the switch assembly can be replaced with a single locking SPST "LED" switch.
(A locking-switch with an LED in it - DOH!)
The RED and BLACK wires power the LED, whilst the other two (YELLOW / ORANGE) are the switch poles.
Note that the LED in these switches is rated at 2.2V-3.3V, so in order to stop it from going 'pop' - attach a 100 ohm resistor to the +ve terminal of the LED.
