LG 32LB1R - dont turn on

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  • jimmiscom
    Member
    • Jan 2018
    • 22
    • greece
    #1

    LG 32LB1R - dont turn on

    Good day
    i have a LG 32LB1R dont turn on. stand by led is steady (not blinking or flashing) but dont turn on.
    any idea what to check first ?
    if you have the schematic of the power supply would be very usefull
    (i only have schematic of the main board)
    tks
    Tags: None
    • vinceroger69
      Badcaps Legend
      • Mar 2012
      • 6714
      • uk
      #2
      Re: LG 32LB1R - dont turn on

      Originally posted by jimmiscom
      Good day
      i have a LG 32LB1R dont turn on. stand by led is steady (not blinking or flashing) but dont turn on.
      any idea what to check first ?
      if you have the schematic of the power supply would be very usefull
      (i only have schematic of the main board)
      tks
      What power supply number is used in your tv this maybe be the correct Service manual
      Attached Files
      Last edited by vinceroger69; 02-17-2018, 07:26 AM.

        Comment

        • jimmiscom
          Member
          • Jan 2018
          • 22
          • greece
          #3
          Re: LG 32LB1R - dont turn on

          thank u. i have al ready the service manual of the main board im looking the power supply diagram (yp2632t)

          the strange is that i measured the standby 5v voltage and was ok (about 4.8v)
          then i pressed the power button and suddenly it turn on.
          i closed it after few minutes and tried to open again but didnt turn on this time.
          i measured again the standby and when i pressed the button again it turned on.
          so everytime that dont turn on and i take a measurement with the multimeter it turns on.
          something must be charged after the measurement.

          any ideas now ?

            Comment

            • vinceroger69
              Badcaps Legend
              • Mar 2012
              • 6714
              • uk
              #4
              Re: LG 32LB1R - dont turn on

              Originally posted by jimmiscom
              thank u. i have al ready the service manual of the main board im looking the power supply diagram (yp2632t)

              the strange is that i measured the standby 5v voltage and was ok (about 4.8v)
              then i pressed the power button and suddenly it turn on.
              i closed it after few minutes and tried to open again but didnt turn on this time.
              i measured again the standby and when i pressed the button again it turned on.
              so everytime that dont turn on and i take a measurement with the multimeter it turns on.
              something must be charged after the measurement.

              any ideas now ?

              connection or solder connection on the pin your testing? maybe also worth checking the esr/uf rating on the capacitors on the power supply
              a quick read of this thread does suggest it might be a capacitor issue too so i would fully re cap the power supply
              https://quuq.org/forum/index.php?topic=6929.0
              Last edited by vinceroger69; 02-17-2018, 12:58 PM.

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