TV may be more viable than VGA, it seems. Although a roughly equal amount of hacking would be involved, most of the components will be subject to a lower frequency, from the figures above.
The trick is that TV signals are interlaced, thus only displaying half the number of lines per field. So a PAL field is only 288 lines, and thus the vertical scan rate is lower than that of a compact. By good fortune, the horizontal scan rate is lower as well.
Interlacing could be achieved by slightly bumping or lowering the vertical deflection on alternating fields.
The trick is that TV signals are interlaced, thus only displaying half the number of lines per field. So a PAL field is only 288 lines, and thus the vertical scan rate is lower than that of a compact. By good fortune, the horizontal scan rate is lower as well.
Interlacing could be achieved by slightly bumping or lowering the vertical deflection on alternating fields.