Need Retro Game Console Repair Rec

Bought an NES console two weeks ago. Seller said it “works but might need new pins”.

Once I got it I went to work.

Replaced the OEM adapter w/ one that works.

72 pin connector received a full treatment of cleaning, boiling, and bending.

My game connectors are near flawless after going back over them with Brasso after using isopropyl.

I went from no power to mostly blinking red light to having to finesses the position of the cart to now almost every game firing up. The next part is where I need help.

I may have gotten too confident by trying to solder a connector on the motherboard that had a small spot of oxidation. See below.

Now my games play for about 1-5 minutes and then the console shuts off.

There’s capacitors I want to check for voltage and I’ll try a long shot of disconnecting the lockout chip.

Looking for any ideas of someone who has a bit more PCB and soldering experience than me. Gameware said nope. Most electronics fix-it stores that specialize on phones in the area only work on newer consoles.

If I can’t find anyone who might want to rework my shite solder, next step might be learning how to rebuild a PCB from scratch….after more soldering practice.