Identifying bad cap(s) as the culprit - TEAC LCD

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  • judgelj
    New Member
    • Nov 2015
    • 4
    • Aus
    #1

    Identifying bad cap(s) as the culprit - TEAC LCD

    Ok so i've been reading around and i think i have a good idea of what is happening. Was hoping i could get some opinions from the experienced.

    My Teac LCD suddenly stopped turning on (red LED, wouldnt respond to remote). I gathered that if i unplugged the TV from mains power overnight, it became responsive and worked fine. After a period of time it would turn off and refuse to turn back on.

    So what i've established is that the TV needs to be unplugged from mains for it to work briefly. This to me seems like leaking capacitors, but then again i dont know a lot. What would be my best course of action? Change all the caps on the power supply?

    Thanks
    Tags: None
    • RJARRRPCGP
      Badcaps Legend
      • Jul 2004
      • 6304
      • USA
      #2
      Re: Identifying bad cap(s) as the culprit - TEAC LCD

      Originally posted by judgelj
      Ok so i've been reading around and i think i have a good idea of what is happening. Was hoping i could get some opinions from the experienced.

      My Teac LCD suddenly stopped turning on (red LED, wouldnt respond to remote). I gathered that if i unplugged the TV from mains power overnight, it became responsive and worked fine. After a period of time it would turn off and refuse to turn back on.

      So what i've established is that the TV needs to be unplugged from mains for it to work briefly. This to me seems like leaking capacitors, but then again i dont know a lot. What would be my best course of action? Change all the caps on the power supply?

      Thanks
      Could be a bad solder joint as well...
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        Comment

        • judgelj
          New Member
          • Nov 2015
          • 4
          • Aus
          #3
          Re: Identifying bad cap(s) as the culprit - TEAC LCD

          I've pulled the back off the TV, everything looks good from a glance. Ill pull the power board off and check behind. What is actually happening for the TV to switch on only after all residual power has been drained. Seems pretty consistent.

            Comment

            • judgelj
              New Member
              • Nov 2015
              • 4
              • Aus
              #4
              Re: Identifying bad cap(s) as the culprit - TEAC LCD

              So im trying to replace all the caps on the board. Problem is i can't find a lot of them in store. Are there any rules for matching similar spec caps? Can the voltage/capacitance be different from what was on the board? Thanks

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