The symptoms
“Could not read the game card.” Cartridges that need reseating five times before they're recognized — then vanish mid-game. A card slot that's gone completely silent while downloaded games play perfectly. When physical games fail but digital ones don't, the game card reader is the prime suspect.
Why it happens
The reader's spring-loaded contacts flex every time a cartridge goes in or out, and after enough insertions they wear, bend, or corrode. Liquid exposure and drops accelerate it. Once the contacts can't grip a cartridge's pins reliably, reads become intermittent and then stop — and cleaning the cartridge doesn't help, because the cartridge was never the problem.
How we fix it
We replace the game card reader with new hardware and verify it with real cartridge reads before anything ships back. $69 flat — parts, labor, testing, and tracked return shipping included, repaired within 48 hours of arriving at our Virginia bench. Your saves and downloaded games are untouched.