[Gammy leg]

Chaps

I have been into the service menu to try to tweak the colour settings that, as I have posted elsewhere, are a bit 'wishy-washy'.
I selected option 2 on the main menu screen and have been able to take a look at all 9 sub menus contained within. Most of them are unaffected when altered presumably because the feed is via RGB scart from sky dodgybox. The only two that seem to be changeable are:
1 Cut Off (R), (G), (B)
3 Bright

My question is how do I navigate between (R), (G) and (B) in 'Cut Off' sub menu. The default appears to be (B) which is currently set at -55, but I can't work out how to select (R) & (G).

Additionally sub menu item no.9 is 'Purity' and is set to 'Off'. What is purity?

Thanks

Gammy

[Gammy leg]

Chaps,

Just picked-up on an earlier post for JVC AV-28X45K service menu which indicated that pressing the RED button on the remote will allow you to scroll through Panoramic, 16:9, Full, etc, etc in Geometry sub menu. Can anyone confirm that the RED button will do the same in Cut-off sub menu? I don't want to risk pressing the wrong button as there have been dire warnings given.
I did press button 1 as a guess - BIG MISTAKE - picture went from 16:9 to 16:0.00001..ooops. Switched set off and on, back to normal again thank god.

Thanks

Gammy