My launch PAL Wii died a few years back (GPU failure from overheating since it had a 6-layer motherboard). Finally replaced the internals with a 4-layer motherboard to bring it back to
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Amazon.com: Wii U Architecture: Innovation under pressure (Architecture of Consoles: A practical analysis Book 21) eBook : Copetti, Rodrigo: Books
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Se desvelan los secretos de la GPU de la Nintendo Wii U