Check every leg on each side of the chip for movement. Nintendo soldering is known to crack over time. Use a pair of fine tweezers or a pin to put slight sideway pressure on each leg. If one moves it needs re soldered. Check every leg.
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Also check both capacitors beside the main chip in case one has shorted to ground.
Check every leg on each side of the chip for movement. Nintendo soldering is known to crack over time. Use a pair of fine tweezers or a pin to put slight sideway pressure on each leg. If one moves it needs re soldered. Check every leg.