"Signal Out of Range" message on LCD - but showing 15khz picture!

[mrmkl]

An LCD display that takes analog input needs some kind of transformation of the video stream. Take continuous ("analog") picture in -> convert and put out to lcd discrete (digital) native resolution. LCD pixel data can be updated as slow as you want, even static, because it is not based on the afterglow by beam hitting the phosphor on CRT surface. (AC voltage is necessary to drive the LCD element, but that is at the output driver stage. At least with the simple "black(opaque) and white(transparent)" LCD)
It shouldn't make much difference if the input is "15 kHz" or the higher beam return sync rate used in PC CRT:s. The process of conversion used by the LCD monitor should remain the same, only it should accept a wider range of input signal sync frequencies.
That is what I am guessing.
Why don't all LCD-monitors accept 15 kHz, is because they are made by big evil companies who just don't care. :cry:

[mrmkl]

You could try an Amiga D23 to VGA (HD-D15) adapter, and see if the LCD (monitor only without TV related add-ons.) syncs to it, using analog RGB input. Sometimes you might get lucky, if the designers have had some foresight to think about marginal groups of users.  :lol:

But if you want to use interlaced screen modes, an LCD TV/monitor is more likely to work, because the LCD monitors desgined for PC:s may not support interlaced modes, because they are rarely used on PC display controller cards (I think.)