TFT LCD turns of?

[skurk]

Do you have a scandoubler/graphics card, or are you using a RGBI->VGA adapter and DblPAL/NTSC modes?

For the latter, that's quite normal.  Every program opening a custom screen drops back to default monitor settings (15kHz instead of 31kHz)

If you're using a scandoubler/graphics card, that's very strange.  Which model/brand are you using?

[skurk]

DblPAL works for workbench stuff only.

If you want something more game and demo friendly, head for a scandoubler or a graphics card.

I'm guessing a scandoubler is the cheapest of the two, and there are a couple on eBay at the moment:

Link 1
Link 2 (warning: ridicilous price)

Cheaper alternatives are a LCD TV or a VGA Box.