Topic: N64 Having a crashing issue.

How's it going everybody. I have my original n64 that id really love to refurbish myself. I played through Ocarina of Time with my son last year and bought Majora's Mask to continue the series but it keeps freezing. The console had run decently... It had some freezing and resetting issues with OOT but as it warmed up it ran fine. Now that i upgraded the memory expansion pak and try to play majora's mask, it can't make it more than 2 minutes before resetting or freezing. All my other games for the most part may need one reset and then run fine. Where do i go from here? I see no corrosion or burns on the motherboard or the game cartridge. I'm wondering if i should just replace all the capacitors? Any help is hugely appreciated.