N64 Powers On Then Shuts Off And Won't Power Back On

I have a NTSC N64 and it originally powered on every time with no power issues, but would have a horrible buzzing noise with the audio. Tried a known Nintendo brand working power supply and that did not change anything. Also tried a known working set of Nintendo brand AV cables and that did not change anything either. Also tried it on a different TV and the issue was still present. I noticed if I move the power cord brick slightly the audio noise would be quieter but still present. I then de-soldered the power port from the motherboard and soaked it in vinegar then rubbing alcohol to clean any possible corrosion in the port and soldered it back on. Now the N64 will power on once and it still had the audio issue present but then shut off after a few seconds and wouldn't power back on. I re-did my soldering job to cross that off but it won't power back on still. After a while the power cord breaker will reset and it will do the same thing again. This is with a jumper pak installed too. I tried it with a known working Nintendo brand expansion pak installed and it made no difference. Motherboard, jumper pak slot and game cartridge slot have been deep cleaned and I don't see any visual issues either. Any ideas? Thank you.