DIY made 250W power supply into 300W power supply process

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Summary:

After consulting a large amount of information to understand the brand power supply is upgradeable, generally can upgrade about 50W, the maximum power can be increased by about 100W (not all power can be upgraded). If there is a need for retrofitting, which power sources on the market have the potential for transformation? For example, the power supply of the Great Wall, Hangjia, and Xingu series is based on the same PCB design (such as Hangjia Cool King Series, Xingu Jinshou Series). Because of the different main power components used, it distinguishes 230W, 250W, 270W. 300W and other power products. After learning that the power supply has upgradeability, the specific upgrade can be started from the following five aspects: high-voltage rectifier tube, large capacitor, switch tube, output rectification Schottky, output filter capacitor. After determining the transformation ideas, you need to prepare related components and transformation tools, such as electric iron, tin gun, screwdriver, tin wire, tweezers, multimeter, power tester (no tester can be tested with a multimeter).

Part of the production process is shown in the attached file, and the detailed production process is shown in the PDF document.