Thomson JL8006A PVR - shorted +12V rectifier

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  • japlytic
    Badcaps Legend
    • Oct 2005
    • 2086
    • Australia
    #1

    Thomson JL8006A PVR - shorted +12V rectifier

    Some time ago, I got a Thomson JL8006A PVR which could not power on.
    Measuring the voltages of the power supply revealed a very low +5V output and no +12V output (mainly consumed by the hard drive); further investigation revealed that D6 (HER504 - 5A, 400V) on the +12V rail has become short-circuited.
    Replacing this diode with an MBR745 (7A, 45V in a TO-220 package) and adding a heatsink to it (for extra reliability) fixed this problem - the +5V rectifier is a SBT1060CT, also in a TO-220 package.
    My first choice in quality Japanese electrolytics is Nippon Chemi-Con, which has been in business since 1931... the quality of electronics is dependent on the quality of the electrolytics.
    Tags: None
    • joshnz
      Badcaps Veteran
      • Feb 2011
      • 969
      • New Zealand
      #2
      Re: Thomson JL8006A PVR - shorted +12V rectifier

      I like those easy fixes.
      Good work.
      My pc
      CPU : AMD PHENOM II x4 @ 3.5Ghz
      MB : ASUS M4A89TD PRO USB3
      RAM : Kingston ValueRAM 16gb DDR3
      PSU : Cooler Master 850W Silent Pro
      GPU : ATI Radeon HD 6850

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