Thomson skydigibox PSU faulty. Guess the cause.

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  • tom66
    EVs Rule
    • Apr 2011
    • 32560
    • UK

    #1

    Thomson skydigibox PSU faulty. Guess the cause.

    More bloated CrapXons!

    The Sky digibox in this case has difficulty tuning into certain channels such as Sky News and CNN, the signal is very weak or broken up. Or when cold it's just not there at all. I suspect this is due to low 12V, which powers LNB amplifier (13/18V.)

    Replaced it with an Amstrad Sky+HD box which is full of Rubycons. (Got it from a friend for a decent price.)

    About 7 years old... So CapXon have had bad caps for at least 7 years, but it has been oblivious to manufacturers.

    Tested the ESR on these caps, some of the ones which are not bulged also test fairly high, around half an ohm for a 220u. I will replace them all with new high quality caps.
    Attached Files
    Last edited by tom66; 07-29-2012, 04:37 PM.
    Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
    For service manual, schematic, boardview (board view), datasheet, cad - use our search.
  • multimeter
    Badcaps Veteran
    • Jan 2011
    • 739
    • united kingdom

    #2
    Re: Thomson skydigibox PSU faulty. Guess the cause.

    Originally posted by tom66
    More bloated CrapXons!

    The Sky digibox in this case has difficulty tuning into certain channels such as Sky News and CNN, the signal is very weak or broken up. Or when cold it's just not there at all. I suspect this is due to low 12V, which powers LNB amplifier (13/18V.)

    Replaced it with an Amstrad Sky+HD box which is full of Rubycons. (Got it from a friend for a decent price.)

    About 7 years old... So CapXon have had bad caps for at least 7 years, but it has been oblivious to manufacturers.

    Tested the ESR on these caps, some of the ones which are not bulged also test fairly high, around half an ohm for a 220u. I will replace them all with new high quality caps.
    jeesh,rubys in a amstrad !,mr alan sugar ,im surprised ! are they AS series?
    fixed so far...376 lg lcd tv's,24 onn tv;s,24 panasonic lcd,16 jvc lcd,12 marshall jcm800 amps,refurb of various disco equipment lighting,old style disco decks ,and a flymo!

    ----------------------------------------------
    please let us know if everything works ok if your tv gets fixed, as it will be and aid for anyone else having the same problem and wishing to fix it.it would save people clogging up this site with topics that are duplicated,and can be found easily using the search function.,and taking up valuable space.enjoy your fixed tv!,hopefully!

    Comment

    • tom66
      EVs Rule
      • Apr 2011
      • 32560
      • UK

      #3
      Re: Thomson skydigibox PSU faulty. Guess the cause.

      Originally posted by multimeter
      jeesh,rubys in a amstrad !,mr alan sugar ,im surprised ! are they AS series?
      ZL, ZLJ and ZLH. Some of the best caps Rubycon produce.
      Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
      For service manual, schematic, boardview (board view), datasheet, cad - use our search.

      Comment

      • momaka
        master hoarder
        • May 2008
        • 12175
        • Bulgaria

        #4
        Re: Thomson skydigibox PSU faulty. Guess the cause.

        How is that lone Ost RLS doing in there compared to the CapXons?

        Comment

        • tom66
          EVs Rule
          • Apr 2011
          • 32560
          • UK

          #5
          Re: Thomson skydigibox PSU faulty. Guess the cause.

          Originally posted by momaka
          How is that lone Ost RLS doing in there compared to the CapXons?
          It's not bulged....
          Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
          For service manual, schematic, boardview (board view), datasheet, cad - use our search.

          Comment

          • ben7
            Capaholic
            • Jan 2011
            • 4059
            • USA

            #6
            Re: Thomson skydigibox PSU faulty. Guess the cause.

            Originally posted by tom66
            It's not bulged....
            haha, does it measure good? :P
            Muh-soggy-knee

            Comment

            • tom66
              EVs Rule
              • Apr 2011
              • 32560
              • UK

              #7
              Re: Thomson skydigibox PSU faulty. Guess the cause.

              Originally posted by ben7
              haha, does it measure good? :P
              Will check it tonight as the caps came in today, from work.
              Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
              For service manual, schematic, boardview (board view), datasheet, cad - use our search.

              Comment

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