All posts by Jestine Yong

• 
  A Guitar Amplifier With Volume Knob Broken Replaced. Model: Behringer HA-10G

            A friend of mine at church brought me this guitar amplifier for repair. He said that it powers on fine but the volume rotating key somehow was broken and needed a replacement....

  • Posted June 11, 2023
  • 5
• 
  Yamaha RX797 AMP Repair

  A regular automotive customer brought in this Yamaha RX 797 amplifier with a no power situation. Firstly, I was able to download a service manual to make the diagnosis a little easier. Yamaha RX-797 service manual link...

  • Posted June 3, 2023
  • 25
• 
  Restored A CCTV Power Supply With A Perfect Output

  This Power Supply Adaptor was brought to me with the complaint that it was dead. This was one among the five power supplies brought by the guy who was in the business of CCTV installations. He has...

  • Posted June 3, 2023
  • 14
• 
  No Cassette Play In Yamaha TC-520 Cassette Deck Resolved

            This deck is revisiting me for the same complaint after a gap of around 8 years! It visited me in November, 2017 and now again in January, 2023. Kindly see my previous...

  • Posted June 3, 2023
  • 10
• 
  Completed Another Advanced Electronics Repair Level 2 Course

  Completed today another Advanced Electronics Repair Level 2 course for 10 participants. If you are interested in taking the electronics repair course, please visit this link. Below is a video and photos taken during the 3 days...

  • Posted June 2, 2023
  • 8
• 
  Shorted Cap In Scalar Board Caused No Display In SONY LED TV KLV-29P423D

            This TV was picked up by me from one of my techie friends’ shop, as he sought my help to resolve an issue of no display, with VGH & AVDD missing. As...

  • Posted May 27, 2023
  • 13
• 
  Fixing A Defect But Brand New UNI-T Tweezer Tester

  On 12 March 2023 a brand new Uni-T UT116A SMD tweezer tester was ordered from the Uni-T meter store and received about 8 days later in that month. Although everything worked it had a bad sliding function...

  • Posted May 27, 2023
  • 18
• 
  Digital Audio Player Repaired

  Received SAREGAMA CARVAN portable digital music player for repair, stating not working. This unit is used by customer’s old age parents. On testing I found the unit is not powering on by pressing On/Off switch on the...

  • Posted May 27, 2023
  • 8