All posts by Jestine Yong

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  Repair and Working Principle of IC LM 324-Based on Sensors IR & LDR Automatic Lighting Controller

                  This machine is designed to detect motion with in a rang about 6 meters and convert any movement in to electrical signal. With help of IC LM324 an operational...

  • Posted October 18, 2025
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  One Channel Of Defective DAC IC Bypassed In Cambridge Audio Model AZUR-540C

            This is the third visit of this CD Player and I request you all to read the earlier articles, as I would be covering only the complaint reported this time with the...

  • Posted October 18, 2025
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  Completed Another Advanced Electronics Repair Level 2 Class

  Just completed today another Advanced Electronics Repair Course for 2 participants. Below are the photos taken during the 3 days course: Likes(5)Dislikes(0)

  • Posted October 17, 2025
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  An Unused Brand New Monitor Saved From Dump – LG 20MP48AB

            This monitor was brought by an Autorikshaw driver (A three wheeler vehicle generally used in our country for passenger as well as cargo movement) who happened to come to my house when...

  • Posted October 11, 2025
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  PHILIPS QT 4019 Trimmer Repaired

            Received not working PHILIPS QT 4019 Trimmer for repair, stating charging LED indicator is glowing but device is not working on when slide the On/Off slider switch. For testing I slide the...

  • Posted October 11, 2025
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  Converted 100W Garden Light To 200W In Sturlite IP66

  I request you all to see the following link to know the background of this Garden Light: https://jestineyong.com/replaced-led-board-in-100w-garden-light-model-sturlite-ip66/ This light which was serviced and given in September, 2023 was brought back in February, 2025 with the complaint...

  • Posted October 11, 2025
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  Completed Another Basic Electronics Level 1 Course

  Completed today another Basic Electronics Repair Level 1 Course for 5 participants. Below are the photos taken during the 3 days course: Likes(24)Dislikes(0)

  • Posted October 10, 2025
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  Kenwood Amplifier Model KAC-629S – Dead but Now Repaired!

  I recently received a Kenwood amplifier (model KAC-629S) that was completely dead. The owner mentioned that another technician had already looked at it and replaced a blown 25A fuse. The amplifier worked for a few days before...

  • Posted October 4, 2025
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