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  • No Power In ATX Power Supply Solved

    My friend brought to me his work computer power supply to fix it. When I test the power supply it didn’t work, I mean the fan didn’t rotate. At this moment, i began open the cover of...

    • Posted June 30, 2013
    • 8
  • Video: Missing 12 Volt In Element Hisense Dynex Insignia LCD TV ELCHW402

    Another great video recommended by Beh Likes(3)Dislikes(1)

    • Posted June 30, 2013
    • 0
  • Replacement For PC817 Optoisolator IC

    Sir Can you help me, Do you know the replacement value for this part number COSMO 1010 817 H25 (PHOTO COUPLER) Answer: The actual part number is PC817. You can read the below post for more information:...

    • Posted June 30, 2013
    • 3
  • treadmill repairing
    Treadmill Repair

    A dead treadmill that brought back to life A guy who is selling second hand sport equipment brought a power board that was dead. This power board is a part of a treadmill machine. He could not...

    • Posted June 29, 2013
    • 12
  • Hissing Sound In TV

    At the starting my TV produced heave hissing and wiring noise. After few minutes it will disappear. But picture and sound are clear. Answer: Hissing sound usually are caused by transformer, inductor/coil due to loose lamination of the core....

    • Posted June 28, 2013
    • 32
  • Display “Locked” in LCD/CRT

    The moment power on, the screen will display “LOCKED”, i don’t know how to reset to remove the screen lock. Answer: You need the service manual to find out the combination keys to unlock it. You can...

    • Posted June 28, 2013
    • 0
  • Power Good Problem In ATX Power Supply

    I managed to fix the power supply partially and measured all the 24 pin and they all have proper voltages (3.3V, 12.1V, 5V…etc.) however one issue remains…. I’m using coolmaster ATX tester and it passes all the voltages...

    • Posted June 27, 2013
    • 1
  • Taking Out All the Components From Circuit Board For Testing

    When i see someone repairing any electronic circuit board it’s always a in circuit analysis because it doesn’t make much sense to take all the components one by one and test it. Answer: When a repairer have...

    • Posted June 27, 2013
    • 0