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RCA 42pa30rq plasma questions

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    #1

    RCA 42pa30rq plasma questions

    i have the same issue the x and y main have shorted transistors and the y buffer has a few bad lines. i ordered all 3 but they haven't arrived yet. i have 2 questions on post 14 he states that the new x-main has a SF10A400H Ultra Fast Recovery Diode in location C4019. 1st question is if the board i get doesn't have that diode should i put 1 in that location because i have 1 that i can take off another board or should i just let it the way it is? i figure it might be needed if it was added to the newer revision and it can't hurt if i do put it in. 2nd question is the x-main taking out the y-main and buffer or is the buffer taking out the y-main and x-main if that is possible? i'm not real familiar with plasmas hopefully tom66 might be able to explain what might be going on. i didn't want to start a new thread but i couldn't get a response on the other thread.

    this is the thread i am refering to post 14

    https://www.badcaps.net/forum/showth...light=42pa30rq
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    #2
    Re: RCA 42pa30rq plasma questions

    can anyone help out?

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      #3
      Re: RCA 42pa30rq plasma questions

      I'm interested if all three new boards did the trick. Shawn76

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        #4
        Re: RCA 42pa30rq plasma questions

        yeah but the buffer board i got some how u5401 had 4 of the pins smashed on 1 side and the top part of the screen didn't work. i got a new 1 from the same place that i ordered from and they sent me a new board without any questions asked and they didn't even make me send the old 1 back. i think the buffer board goes bad and takes out the y and x main but sometimes it only takes out the x main in some cases thats just my conclusion. because with the bad buffer board it took out my x main and i had to replace the 2 igbt's on the x main. it's best if you replace them all at the same time and check the buffers for continuity when you first get it. the new x main i got did have the SF10A400H Ultra Fast Recovery Diode in location C4019 the old 1 had a diode on the bottom of the board to do the same thing but i couldn't read the marking numbers off of it to know what kind of diode it was. tv is fixed for now until something else goes bad hopefully that won't be for a while.

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          #5
          Re: RCA 42pa30rq plasma questions

          I got buffer a new y main and that didnt work but just got new y buffer and x main and thank god it did the trick. good thing I didnt blow out the new y main too.

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            #6
            Re: RCA 42pa30rq plasma questions

            glad you got it fixed. normally it is just the x main and the y buffer that goes bad but once in a while it takes the y main also probably depending on how many times you try to power it up with a bad x main and y buffer. your other y main might still be good.

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