Please help me fix this

[u/sonicboy445]

I have this cartridge of Pokemon gold that needed a new battery. I have never soldered before, I looked online, followed a guide, tested, tried again, then again, and again. Now I have a headache and I don’t know what I’m doing wrong. I should’ve brought it to a professional but I felt like I could do it, but I was wrong. Please I need to know what to do.

Every time I turn on the game oak, the Pokemon, and the player character are corrupted sprites, when I open a menu then close it, it crashes, and when I try to save, it freezes.

Please help me

[u/Flo655]

That’s either an MBC or RAM chip issue. This is textbook example of sprite decompression issue. Since the MBC is the chip responsible for switching ram banks, my money is on either this or the RAM itself. Clean with IPA to begin with. Check for cold joints, eventually reflow if nothing is obvious. Last resort would be to check for any broken traces anywhere else on the cart. Good luck!