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SMPS P-SMPS Board for L37WD12

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    #1

    SMPS P-SMPS Board for L37WD12

    I'm looking for the original CAP values for the P-SMPS Board for an RCA L37WD12. The board in question can be viewed here. I've replaced them once before and know I did not use the exact same values as the originals. If someone has the schematic for this board with the values or can at least give me what they are, I'd greatly appreciate it.
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    #2
    Re: SMPS P-SMPS Board for L37WD12

    looks like you are needing the schematic for it . sams may have it .
    why did you change values and what is the problem now ? did it work after putting wrong ones in ?
    Last edited by petehall347; 01-08-2017, 06:00 PM.

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      #3
      Re: SMPS P-SMPS Board for L37WD12

      There is reference to that board on this page.
      https://contour07.wordpress.com/2011...2wd12-l37wd12/

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        #4
        Re: SMPS P-SMPS Board for L37WD12

        I changed values cause what I had on hand wasn't exact. The TV would not turn on unless I got it warm. Once it was warm, it would turn on and work flawlessly. I knew it was a sign of bad caps as I've been replacing caps in motherboards for years. Not sure what "sams" is.

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          #5
          Re: SMPS P-SMPS Board for L37WD12

          Sch.
          Attached Files
          Never stop learning
          Basic LCD TV and Monitor troubleshooting guides.
          http://www.badcaps.net/forum/showthr...956#post305956

          Voltage Regulator (LDO) testing:
          http://www.badcaps.net/forum/showthr...999#post300999

          Inverter testing using old CFL:
          http://www.badcaps.net/forum/showthr...er+testing+cfl

          Tear down pictures : Hit the ">" Show Albums and stories" on the left side
          http://s807.photobucket.com/user/budm/library/

          TV Factory reset codes listing:
          http://www.badcaps.net/forum/showthread.php?t=24809

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            #6
            Re: SMPS P-SMPS Board for L37WD12

            Thanks Budm. That's the one I was looking for in all of the other posts about this model. Now for a few questions to clarify what I'm reading on this schematic. I know that cp613 is 22 mfd 50v. I've got that down. From that I"m reading on the notes on the schematic it says that all voltages for caps are 50v unless otherwise noted. I'm looking at cp614 and cp615. 614 says "10U" and 615 says "680p". Am I to assume they each mean mfd for each or am I off center here. Thanks again.

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              #7
              Re: SMPS P-SMPS Board for L37WD12

              C614 sounds like a 10uF (microfarad) and C615 680pF (picofarad)

              Using mfd or MFD for microfarad is a bit archaic now.
              Most people use uF (or correctly, μF) these days.

              mfd is too easy to confuse with mF (millifarad) which is also rare, but is an order of magnitude different!

              not to mention mmfd which is the same as picofarad...
              Last edited by Agent24; 01-09-2017, 06:40 PM.
              "Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
              -David VanHorn

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                #8
                Re: SMPS P-SMPS Board for L37WD12

                Agree with the rest here, also what a nasty psu design so cramped poor thing must run very hot
                Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

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