Hi folks. I was recapping a Marantz 1550 receiver and I had a strange issue. I rebuilt the board that has the low filter and high filter switches on it, and afterwards I noticed that when I pressed the high filter button there would be a huge pop and the receiver would go into protection briefly. There was a .47 uf 50v electrolytic capacitor (one of those bright orange aluminum caps) behind the switch, and I had replaced it with a Wima film cap. When I put the original .47 electrolytic cap back in, there were no issues. I swapped in a couple other film caps and it did the same thing with all of them. Only the electrolytic was ok. Any idea why this happened?