Flicker on an older i-mac

[rich northouse]

Hi Guys,

I have an older i-mac G3.  The screen flickers and sometimes has a 
green cast to the color.  I have been told that it might be a "flyback 
transformer" or perhaps a loose solder joint.

Since it is an older machine, I don't wish to spend a great deal of 
cash fixing it. I have technical abilities and am not afraid to try to 
fix it myself. I am aware of the high voltage on the flyback and CRT. 
Anyone have any ideas?

If it is a "flyback transformer", does anyone have a source to purchase 
  one?  Are there used ones available?


Thanks for your help,


rich