Internal diode is for to prevent reverse current which becomes reverse-biased and blocks current when the polarity of the applied voltage is reversed. Sharing Easiest way to test MOSFET using LED...

          Received PC SMPS for Repair Stating Dead (not working). Connected the SMPS to Series Bulb Board for testing. It is not showing any shorting.  For further inspection I removed circuit board out...

        This was brought to me by a recently added regular customer and was one among the many antique sets that he loves to collect and maintain. The set had gone to another technician...

Completed today another Advanced Electronics Repair level 2 course for 6 participants. They have taken the level 1 course two months ago. Below are the photos taken during the 3 days course; Likes(15)Dislikes(0)

          This Roborock H6 Stick Vacuum cleaner seemed to have a mind of its own. One minute the power head was not working, next minute it was working constantly. Also, when the brush...

          Every now and then we do have to face failures in our attempts to save a device and here are two cases that incidentally came one after the other. Both TVs were...

        This TV was brought by a close family friend with the complaint that restarting sound was heard but there was no display. As you can see from the second picture above, the back...

          Received Circle PC ATX SMPS for Repair from one of my techie friends, Stating fault symptom: Dead   Connected SMPS to Power & shorted PS_ON pin (Green Wire) to ground (Black) wire...