Announcement

Collapse
No announcement yet.

LG L1953S doesn't power on

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    #81
    Re: LG L1953S doesn't power on

    thnx for your reply
    i already bought these capacitors from a local shop for a lot less ans i am going to try to replace them
    the top of c202 and c204 is a little bloated so i think i will start with them

    Comment


      #82
      Re: LG L1953S doesn't power on

      Are they 105 Celcius rated?

      Comment


        #83
        Re: LG L1953S doesn't power on

        yup and they work great
        i changed all 6 after all and it did the trick
        thnx for ypur help

        Comment


          #84
          Re: LG L1953S doesn't power on

          Hello,
          In my case problem was caps and the short-circuited U303 (4511GD).

          Comment


            #85
            Re: LG L1953S doesn't power on

            I know it's an old thread, but I have several monitor with exact same problem.
            To clear other funny readings in original post:
            -12V output falls slowly - it's actually not powered (many caps on it)
            -5V output falls faster
            -U101 Pin 7 get's to 12V then crashes - probbably tries to start and bleeds out, this is repeater in about 1sec intervals
            -U101 pin 1 should be line voltage, but falls a bit, due to resistor R108 and U101 initiative to charge C103 cap
            -U101 ping 8 should get 5V reference voltage, but it also crashes, since U101 can't start in normal operation
            Tempetarure has something to do with it. As I said, I have several monitor with exact same problem and when they are warm or have been recently in operation is fine. When I cool them or have been long unpluged, they won't start.
            Help me please

            Comment


              #86
              Re: LG L1953S doesn't power on

              With those screens , you better change badcaps first , even if not bulged ...

              https://www.badcaps.net/forum/showpo...3&postcount=21

              Comment

              Working...
              X