Announcement

Collapse
No announcement yet.

HP PL4260N (LG PD42X32002 Panel) Help Please

Collapse
X
Collapse
 
  • Page of 1
  • Filter
  • Time
  • Show
Clear All
new posts
Previous template Next
    #1

    HP PL4260N (LG PD42X32002 Panel) Help Please

    Hi guys, my first post here looking for some help. I have an HP PL4260N that came in with no video & working sound. It had a blown fuse on the Z-Sus board so I replaced STK 795-820 ipm on Z-Sus, still no video. I replaced the STK 795-820 ipm on Y-Sys (which had blown), and when powered blew the fuse on Z-Sus again. After the fuse blew I get a very dark static around the edges, and the Y-Sus heatsink gets very hot. If I put a good fuse in the Z-Sus board, it doesn't blow again but the unit doesn't even power up, it clicks, thens clicks back red. Where to I go next? I thank you in advance for any help, I'm still learning!
    Tags: None
    #2
    Re: HP PL4260N (LG PD42X32002 Panel) Help Please

    OK so these 2 large caps on the power board are Nichicon 450V 330uf. They both are testing ~300uf and last night after desoldering 1 pin to remove them from circuit they were testing ~.17-.23 ESR now this morning they are testing ~.30-.34 ESR. Is this normal or are they toast? Thanks!

    Comment

      #3
      Re: HP PL4260N (LG PD42X32002 Panel) Help Please

      Originally posted by itek View Post
      OK so these 2 large caps on the power board are Nichicon 450V 330uf. They both are testing ~300uf and last night after desoldering 1 pin to remove them from circuit they were testing ~.17-.23 ESR now this morning they are testing ~.30-.34 ESR. Is this normal or are they toast? Thanks!
      That is normal. These are not low ESR caps.

      PlainBill
      For a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.

      Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.

      Comment

        #4
        Re: HP PL4260N (LG PD42X32002 Panel) Help Please

        Wow almost 2 months later I got it running!!!!
        1. Replaced IPM on Z-Sus,
        2. then blew it with a bad Y-Sus,
        3. then replace IPM on Y-Sus,
        4. then replace Z-Sus board

        I read in a post once here, I forget who posted it "If you want to learn, replace the chip, if you want to fix it, replace the board" - Excellent Advice! I have learned alot

        Its running now but I got light red static, I guess I need to calibrate it..
        Thanks everyone on this forum for being so helpful.

        Comment

          #5
          Re: HP PL4260N (LG PD42X32002 Panel) Help Please

          OK I adjusted in accordance to the LG guide with no luck....... I guess I'm stuck with the red snow without a firmware flash from what I hear?

          Comment

            #6
            Re: HP PL4260N (LG PD42X32002 Panel) Help Please

            Yeah to get rid if the red maldischarge you would need to update firmware on the control board.

            Comment

              #7
              Re: HP PL4260N (LG PD42X32002 Panel) Help Please

              That would have been me. ( If you want to learn).

              Good for you to take the long road!

              Cadiman

              Comment

                #8
                Re: HP PL4260N (LG PD42X32002 Panel) Help Please

                itek maybe you can give me some tips on getting my model to working. I had the same problem with the red light. Also on those caps I'd they are bulging very very little on the top could they be bad? If anyone has a idea on what could be the problem. Thanks for any help.

                Comment

                Previous template Next
                Working...
                X