Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Recent content by aromring

  1. A

    [SOLVED] 10 days of anguish - the story of my first repair of consumer electronics

    Thank you very much for kind words, awesome troubleshooting advice, and the excellent multimeter tutorial. To answer your question, the first photo of caps is not mine; I pulled it off the Internet for illustration. The SMPS diodes were of the 1N4007 type.
  2. A

    [SOLVED] 10 days of anguish - the story of my first repair of consumer electronics

    Epilogue She's happy until this day, since the player works perfectly OK since my repair back in May. Now, on day 1 I promised to write about the obsolescence by design. Yes, it concerns one cap, C309, in the primary circuitry of the SMPS: the manufacturer placed it precisely in between...
  3. A

    [SOLVED] 10 days of anguish - the story of my first repair of consumer electronics

    Days 8-9 Well, I am not going to just sit and wait for two weeks. The curiosity takes over. Since the "patient" is already on the "operating table" I explore other circuits. I check the remote's IR signal and the associated circuit response - it works. Now, I recall that the digital display does...
  4. A

    [SOLVED] 10 days of anguish - the story of my first repair of consumer electronics

    Day 3 First thing on Monday morning, with a big smile I announce to my coworker: "It's fixed". I connect it to a flat panel TV in the conference room expecting to see the same test video I saw on Friday… and nothing works! Connections? No, these are fine. Besides, the DVD drawer doesn't open and...
  5. A

    [SOLVED] 10 days of anguish - the story of my first repair of consumer electronics

    Day 2 Time to learn more about switched mode power supplies. Indeed, capacitors fail most often, but trouble may be caused by bad diodes, transistors, and so on. I desolder C316, just in case, and replace it with a new capacitor with higher voltage rating. Fortunately, I find service manual for...
  6. A

    [SOLVED] 10 days of anguish - the story of my first repair of consumer electronics

    Day 0: It's late April and a cute coworker of mine is in despair. She brings her broken Philips DVD player (DVP642, like this: http://salestores.com/philip27.html) to the office in hope that someone might help her. What's so special about 11-year old DVD player? - you might ask. Just throw it...
See more

Part and Inventory Search

Back
Top