I have a monitor that is touchy with the horz roll? if you breathe on it it will roll any thoughts? other then that great pic. The monitor is OLD from what looks like Mappy burn in on it.
No use replacing the pot without verifying it's bad. Put a meter on it and measure the range.
Also, how are we supposed to tell you the value of the Horizontal Hold/Freq pot without knowing which monitor chassis it is? Besides, if you look at the pot, it'll usually have a number code on it that tells you the value.