Sorry if this is not the right forum for the question, but the end result of what I must do is close enough to a hardware hack.
I have a 14" Apple Display. It works, but the problem is that the picture is too wide (by about a full half inch) for the screen and the picture (top to bottom) is too small (as in only 3" tall). I cracked open the case and adjusted the pots for the H and V. Horizontal will not adjust to any helpful degree. Vertical adjusts beautifully, BUT the longer the CRT is on, the taller the picture grows. I used to know what this meant in terms of resistors and caps for whatever needed replacing - I obviously no longer recall.
Can any one help me determine what the problem is?
Also, the picture periodically has a "wave" as the color tone flutters. Most likely another problem due to age and high use, but fixable for the patient with half a clue.