MonitorGuru: low ESR cap question ...

[JoeB]

My old "monitor" has a vertical deflection problem.  I've noticed one of the caps leaked. (the problem was the top 1/2 stretched, while the bottom shrunk.. until the tube got warm.. but stayed almost the same).

According to the net, it's either Marcom or Elna caps (1uF 50V 105 degrees electrolytic).

So I went and put in there a 1uF 200V 105 degrees electrolytic.  Now the picture is shrunk to the middle 1/3 of the screen!   

These caps are used to drive a AN5521.  If I replace the IC, should that fix my problem? are there any equivalent drop in IC's in case I can't find it local to me?

Better yet, what are "low-esr" caps, and how can I tell them when purchasing?  Do I have to replace the 2 caps with the exact same "red" caps, or are the ones I put in there now good enough?


Thanks!