Connect with us

Fault finding with SMPS

Discussion in 'General Electronics Discussion' started by Mondotronics, Jul 13, 2016.

Scroll to continue with content
  1. Mondotronics


    Jul 13, 2016
    I've got a Yamaha P7000S Power Amplifier on my desk. It is not powering up. In general,can anyone please advice me on steps to find faults in SMPS?
    To be more specific on the problem here, Two power resistors were blown and also two igbt close to the main transformer were blown.
    Please help. Thank you
  2. davenn

    davenn Moderator

    Sep 5, 2009
    not familiar with it

    firstly, have you tried to find a schematic for the circuit ? would be of great help
    and sharp well lit photos would also be of huge help

    Last edited: Jul 13, 2016
  3. shlomo1234


    Jun 20, 2016
    As Dave said find the schematics, also replace those resistors and the transistors and check all the elctrolitic capacitors.
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day