Problems with my CTR AMSTRAD CTM644

[DARKGATE]

  Hi guys, time ago, my CTR AMSTRAD CTM640 is dead, on ebay i have found a CTR SCHENEIDER CTM644 (amstrad clone).
Today i see wich have problems with a lot of games, TURRICAN 1 and ENLIGHTMENT DRUID 2, are unplayable, on my monitor the image is out sync and the image wobbles, i have problems only with these games, someone know of these  problems.
The others games are perfects, with my old monitor ctm640 the images was corrects and no corrupts.
Thank you.

[ralferoo]

The CTM644 and CTM640 should be the same apart from the CTM644 having a 12v supply for disc drive machines. Schneider is just a German branded Amstrad, internally the monitors are identical.

There is a vertical sync knob at the back of the monitor, perhaps that needs tweaking for these games (if they used screens that aren't 312 lines high).

The problem you describe sounds more like trying to use a horizontally scrolling game on an LCD TV - that would be unstable. However, the monitors you have should behave the same, so the only thing I can think of is the vertical hold control.