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Led52b45rq no voltages at all.

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    #1

    Led52b45rq no voltages at all.

    Led52b45rq and power supply model rs150s-4t04.
    N ostand by voltage and no voltage is all coming out DC wise. I have and I'm not finding much for AC voltage on the hot side either. What am I looking for I originally thought maybe I had a blown fuse for the fuses are good and the only thing I'm assuming is possibly a voltage regulator diode all check good as well.
    Did I leave the soldering iron on?
    Tags: None
    #2
    Re: Led52b45rq no voltages at all.

    Never mind. I found a bridged connection factory flaw. Removed it and blew up the a6069h regulator
    Did I leave the soldering iron on?

    Comment

      #3
      Re: Led52b45rq no voltages at all.

      Could you post a pic of the board you're working on? Might give some of us some insight into this model if nothing else.

      Comment

        #4
        Re: Led52b45rq no voltages at all.

        I took pics but I can't get into my photobucket account for some reason. Well I found a few issues first of all off of the voltage detector IC? I believe that's what it is I replaced it from an old power supply that I had same part number and now after I replaced a small chip cap and a zener diode off an opto im getting 2.7v at the 5v standby. now we're getting somewhere but unfortunately I didn't know the specs on that cap and zener that I replaced. I only looked at another power supply found these in its relative locations to assume that they are the right ones for this power supply. Any ideas where I might only be getting 2.75 DC at the 5v stand by from?
        Did I leave the soldering iron on?

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          #5
          Re: Led52b45rq no voltages at all.

          If anyone has a schematic the parts are zd3 and c33.
          Did I leave the soldering iron on?

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            #6
            Re: Led52b45rq no voltages at all.

            http://i845.photobucket.com/albums/a...psd8632aff.jpg

            http://i845.photobucket.com/albums/a...ps56668853.jpg
            Did I leave the soldering iron on?

            Comment

              #7
              Re: Led52b45rq no voltages at all.

              Did I leave the soldering iron on?

              Comment

                #8
                Re: Led52b45rq no voltages at all.

                If I short opto pc3 pin 3 and 4 I get backlight on 71v and 12v surges between 10 and 12. No 5v whatsoever and 5v standby is down to 1.5 now
                Did I leave the soldering iron on?

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                  #9
                  Re: Led52b45rq no voltages at all.

                  Well I blew another 7 pin voltage detector ic. I'm ordering another power supply.
                  Did I leave the soldering iron on?

                  Comment

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