I have been able to revive some 20+ year old marine auto pilot components by replacing bad electrolytic capacitors. Some are through-hole and some are smd. One control head that was dead now works after replacing most of the caps, although it takes some time and struggles to start. I suspect the three remaining caps might be the problem. But an LCD that I can't remove covers the back of the board where these through-hole radial electrolytic caps are soldered so I can't test them with an ESR meter or easily remove them. Is there a good way to remove these caps without damaging the board? One that had leaked easily popped one lead when wiggled and the cap lifted right off the other lead. I then made solder pads for the new cap. I'd like to do the same for the others.