The Nuvi 25x5 is well known for having issues with the rear USB port becoming loose or disconnected from the PC board. This will prevent the unit from powering up when connected to an external charging source. It will also prevent the internal battery from being able to be charged, so when the battery has exhausted its charge, the unit will be dead. This can be repaired. For more information, please see this link: SHARCNET USA Out of Warranty GPS Digital Camera Repair
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The Nuvi 25x5 is well known for having issues with the rear USB port becoming loose or disconnected from the PC board. This will prevent the unit from powering up when connected to an external charging source. It will also prevent the internal battery from being able to be charged, so when the battery has exhausted its charge, the unit will be dead. This can be repaired. For more information, please see this link: SHARCNET USA Out of Warranty GPS Digital Camera Repair