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RadioShack 22-510 Switching Power Supply Teardown

Rédigé par : tjlindborg (et 2 autres contributeurs)
Publication : March 3, 2016
  • Commentaires : 0
  • Favoris : 1
  • Vues : 2,8k

RadioShack 22-510 Switching Power Supply Teardown

Rédigé par : tjlindborg (et 2 autres contributeurs)
Publication : March 3, 2016
  • Commentaires : 0
  • Favoris : 1
  • Vues : 2,8k

Vue éclatée

Introduction

The RadioShack 22-510 Switching Power Supply provides AC to DC conversion to mimic a car’s electrical system. This teardown looks at some of the components that make this supply function.

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Cette vue éclatée n'est pas un tutoriel de réparation. Pour réparer votre RadioShack 22-510 Switching Power Supply, utilisez notre manuel de réparation.

  1. RadioShack 22-510 Switching Power Supply Teardown, Disconnect Supply Power: étape 1, image 1 de 2 RadioShack 22-510 Switching Power Supply Teardown, Disconnect Supply Power: étape 1, image 2 de 2

    • Ensure the power supply is unplugged from mains power before continuing. If the device is powered on during disassembly, serious harm or death may occur.

    • The entire power supply can be taken apart with a Phillips screwdriver and adjustable wrench.

    Modifier

  2. RadioShack 22-510 Switching Power Supply Teardown, Remove the Cover: étape 2, image 1 de 3 RadioShack 22-510 Switching Power Supply Teardown, Remove the Cover: étape 2, image 2 de 3 RadioShack 22-510 Switching Power Supply Teardown, Remove the Cover: étape 2, image 3 de 3
    Outil utilisé dans cette étape :
    Magnetic Project Mat
    $19.95
    J'achète

    • Removing the eight cover screws on either side of the power supply allows the cover to lift off

    • Screws can be organized using an iFixit Magnetic Project Mat

    • A fuse protects the system from overcurrent conditions and the chassis is grounded to protect the user from shorts to the case.

    Modifier

  4. RadioShack 22-510 Switching Power Supply Teardown, Remove Fan: étape 3, image 1 de 3 RadioShack 22-510 Switching Power Supply Teardown, Remove Fan: étape 3, image 2 de 3 RadioShack 22-510 Switching Power Supply Teardown, Remove Fan: étape 3, image 3 de 3

    • The fan connector pulls out by hand. The spade terminal connectors may require coaxing with a pair of pliers.

    • The Sunon MagLev KDE1205PFV2 runs at 4300 RPM for a maximum airflow of 13 CFM. A dirty fan might not meet these specifications. Remember to clean your fans!

    Modifier

  5. RadioShack 22-510 Switching Power Supply Teardown, Remove Switch: étape 4, image 1 de 3 RadioShack 22-510 Switching Power Supply Teardown, Remove Switch: étape 4, image 2 de 3 RadioShack 22-510 Switching Power Supply Teardown, Remove Switch: étape 4, image 3 de 3

    • The illuminated switch is connected by two sets of black and white AC wires and held in by two locking tabs.

    • The switch is hooked up to the primary side of the circuit. If the switch faults while energized, it has potential to shock the user.

    Modifier

  6. RadioShack 22-510 Switching Power Supply Teardown, Remove Heatsink and Heat Spreader: étape 5, image 1 de 2 RadioShack 22-510 Switching Power Supply Teardown, Remove Heatsink and Heat Spreader: étape 5, image 2 de 2

    • Removing the heatsink from the spreader reveals the liberal use of thermal paste. Try not to get it on your hands, it's tough to wash off!

    • The silver heat spreader is screwed to the chassis and must be detached before removing the board.

    Modifier

  7. RadioShack 22-510 Switching Power Supply Teardown, Remove the Board From the Chassis: étape 6, image 1 de 3 RadioShack 22-510 Switching Power Supply Teardown, Remove the Board From the Chassis: étape 6, image 2 de 3 RadioShack 22-510 Switching Power Supply Teardown, Remove the Board From the Chassis: étape 6, image 3 de 3

    • The board lifts out of the chassis after removing the five screws holding it down.

    • The capacitors may still be charged, do not touch the terminals! The capacitors can be discharged by shorting the terminals with an insulated screwdriver.

    • The UC3842BN PWM controller handles the switching feedback.

    • The chassis has a sheet of plastic for short circuit prevention under the board.

    • A thermally conductive pad lies under the heatsink assembly for additional cooling capability.

    • Organized parts make reassembly a breeze.

    Modifier

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