Chieftec black 750W - ZD1 and Q17 burned

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  • ravenns
    New Member
    • Mar 2013
    • 5
    • Serbia
    #1

    Chieftec black 750W - ZD1 and Q17 burned

    Helo all!
    This is my first post, and I'd like to greet You all!
    So, my problem is as follows... I am trying to fix a Chieftec PSU for a friend. This PSU has a bad 5V output. So, I checked all of the rectifyers, and all of them seem to be ok.
    My problem goes deeper as I managed to burn zener diode ZD1 and transistor Q17 which is connected to a ZD1. I done this trying to measure voltage on zener ZD1, but accidentally touched adjacent pin and a big boom happened. I desperatly need markings on those two components (ZD1 and Q17)so I can buy the replacement and try to fix it further...
    I guess that ZD1 is 16V, and Q17 transistor could be 1P or W2F (I guess this to be true because all of the neighbouring transistors are 1P, and W2F)...
    Thank You all in advance!
    Last edited by ravenns; 03-18-2013, 02:48 PM.
    Tags: None
    • mscserbia
      Member
      • Dec 2013
      • 17
      • Serbia
      #2
      Re: Chieftec black 750W - ZD1 and Q17 burned

      Can you read voltage from diode body and transistor?

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