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Philips LCD 42PFL5432D/37 - Bad PSU

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    #1

    Philips LCD 42PFL5432D/37 - Bad PSU

    Hello, I'm new here and new to replacing capacitors. Luckily I'm in the right place, I have learned a lot by poring over the helpful forums and I'd like to thank all the experts for their info and advice. I've always been a bit of a tinkerer and have experience in building/modifying PC's and a little experience with soldering so I believe this PSU is fixable.

    On to my problem. The pics I have attached show a PSU from a Philips 42" LCD. It made a sort of humming/hissing noise for about a week before it crapped out. I can turn on the TV, it stays on for a second or two and then goes back to sleep mode (red light).

    Doing a little reading here I learned that the caps on this PSU are cheap garbage. (Capxon) I found a replacement PSU for a reasonable price and ordered it. But I would like to attempt to fix this one and replace the caps with better quality ones. I need a little nudge in the right direction on which type/brand of replacements to use.

    Bad Caps:
    A, B, & C - 1500uf 35V GF 105 degrees C
    D - 2200uf 16V GF 105 degrees C

    I'll post my results, success, failure when I'm done and thanks in advance for any help.
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    #2
    Re: Philips LCD 42PFL5432D/37 - Bad PSU

    Please post diameter and height of the existing caps so we can help get the right size. Caps come in different size and shapes.

    Originally posted by Lobo
    Doing a little reading here I learned that the caps on this PSU are cheap garbage. (Capxon) I found a replacement PSU for a reasonable price and ordered it. But I would like to attempt to fix this one and replace the caps with better quality ones. I need a little nudge in the right direction on which type/brand of replacements to use.

    Bad Caps:
    A, B, & C - 1500uf 35V GF 105 degrees C
    D - 2200uf 16V GF 105 degrees C

    I'll post my results, success, failure when I'm done and thanks in advance for any help.
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      #3
      Re: Philips LCD 42PFL5432D/37 - Bad PSU

      Sorry, trying to track down something metric to measure them, hehe. A rough estimate using standard inches and converting to metric is something like:
      A, B, C, diameter 1.3 cm - length 3.5 cm
      D, diameter 1.3 cm - length 2.7 cm

      Hope this helps

      Comment

        #4
        Re: Philips LCD 42PFL5432D/37 - Bad PSU

        I would wait for others to verify since I'm just learning and don't know all the different lines associated with the different manufacturers, but assuming you live in the USA

        Panasonic FM

        http://search.digikey.com/scripts/Dk...name=P12409-ND

        and

        http://search.digikey.com/scripts/Dk...name=P12369-ND

        Originally posted by Lobo
        Sorry, trying to track down something metric to measure them, hehe. A rough estimate using standard inches and converting to metric is something like:
        A, B, C, diameter 1.3 cm - length 3.5 cm
        D, diameter 1.3 cm - length 2.7 cm

        Hope this helps
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          #5
          Re: Philips LCD 42PFL5432D/37 - Bad PSU

          Wow, too bad you ordered the replacement board already. If the cap problem is the only problem (most likely it is) then you would get away with only spending about $4.00 to fix this. I hope you can get a refund.
          The strong-minded rise to the challenge of their goals,the weak-minded BECOME HATERS

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            #6
            Re: Philips LCD 42PFL5432D/37 - Bad PSU

            or this might help
            A, B, C, - diameter .5-.51 inches - length 1.375 inches
            D - diameter .5 - .51 inches - length 1 - 1.0625 inches

            yeah, I didn't want to resort to ordering a new board but I need this TV working ASAP. Since I am also new to this I don't know how well I will do replacing the bad caps. Also, I didn't really expect such quick replies, This site gets better by the minute
            Last edited by Lobo; 05-16-2010, 07:53 PM.

            Comment

              #7
              Re: Philips LCD 42PFL5432D/37 - Bad PSU

              I started repairing LCD monitors less than 4 weeks ago and never touched a soldering iron before and so far I have fixed 3, waiting for caps on 3, and working on another 3 (waiting for dmm and jewelers lens).

              If my inexperience is any indication, you should do fine.

              Originally posted by Lobo
              or this might help
              Since I am also new to this I don't know how well I will do replacing the bad caps. Also, I didn't really expect such quick replies, This site gets better by the minute
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                #8
                Re: Philips LCD 42PFL5432D/37 - Bad PSU

                This site kicks major ass! I have made much money from help fixing stuff.
                Replacing the caps is very very easy in your case. The caps are out in the open and they're normal values. It might be quicker for you to get the caps and put them in rather than to wait for the board to arrive. Who knows, maybe you can find a member who has experience that lives near you. Seriously, these 4 caps, I can remove and replace within 5 minutes - having soldering iron and stuff already of course.
                The strong-minded rise to the challenge of their goals,the weak-minded BECOME HATERS

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                  #9
                  Re: Philips LCD 42PFL5432D/37 - Bad PSU

                  Thanks for the words of encouragement, I'll order some caps and try to go with whatever arrives first. Hopefully I can fix this PSU and return the board because it appears the caps on that one are also Capxon. At the very least I'll have a back-up on hand and the confidence to maybe fix my friends and relatives TV's to save them some money too.

                  One question though. Do the diameter and height have to be exact or just close enough. At the moment I am using a tape measure and it really isn't a good tool for measuring these things. I'd like to place an order on caps tonight if I can just go on the rough estimate of the size.

                  Comment

                    #10
                    Re: Philips LCD 42PFL5432D/37 - Bad PSU

                    BTW, I did look at badcaps.net to see if Tom sells them, but he doesn't have all the caps you need.

                    Size (resist jokes) should be similar or a bit smaller, I think. Obviously, if you get caps too wide or tall, they may not fit in the tight spacing or you may not get the cover back on. So stick to as close as possible.

                    The ones I listed are right on or a touch smaller than what you listed. Of course, if this were a carpenter's site, you must measure twice and cut once! So please double check your measurements and the website.

                    From the picture, cap B is the only real concern diameter wise. If the replacement caps are too fat, you may have troubles getting B in. Assuming the A, B, C, and D are all shorter than the tallest thing on the board, height should not be an issue even if you are a few mm off in measurement.

                    PS. Repairing won't always be this easy. I tackled the 3 easiest monitors and left the last 3 hardest ones for last. Even the more senior and experienced members of this board take days to figure out the tough ones.

                    Originally posted by Lobo
                    Thanks for the words of encouragement, I'll order some caps and try to go with whatever arrives first. Hopefully I can fix this PSU and return the board because it appears the caps on that one are also Capxon. At the very least I'll have a back-up on hand and the confidence to maybe fix my friends and relatives TV's to save them some money too.

                    One question though. Do the diameter and height have to be exact or just close enough. At the moment I am using a tape measure and it really isn't a good tool for measuring these things. I'd like to place an order on caps tonight if I can just go on the rough estimate of the size.
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                      #11
                      Re: Philips LCD 42PFL5432D/37 - Bad PSU

                      One other thing. I count 7 smaller caps (2 green, 5 black). You may want to list those values, size and get replacements for those as well.

                      Caps don't have to bloat or leak in order to be bad. You may not end up using the caps, but these smaller caps should be cheap (like 40 to 60 cents each).

                      So replace the bloated caps first and test. If that doesn't work, post another clear close up picture (use macro mode) of both sides on the board.

                      Originally posted by Lobo
                      I'd like to place an order on caps tonight if I can just go on the rough estimate of the size.
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                        #12
                        Re: Philips LCD 42PFL5432D/37 - Bad PSU

                        Originally posted by Lobo
                        A, B, C, diameter 1.3 cm - length 3.5 cm
                        D, diameter 1.3 cm - length 2.7 cm
                        Those are pretty useful measurements actually ...
                        What you're looking for is caps with a 12.5 mm diameter (or less if you want). For the height - doesn't have to be exact match, just somewhat close. As long as you can put the power supply cover back on without hitting the caps, that's all that matters.
                        Now the replacement caps - you need to find out the series of the CapXon caps. It's usually a 2 letter code printed on them (KF, KM, etc.). This will allow you to determine what replacements you need.
                        Generally for KF series, you can use Panasonic FM or equivalent (possibly Chemicon KZE?). For KM, you can use Panasonic FC or equivalent (Chemicon KY/LXY/LXZ, or Nichicon PW/HE).

                        Comment

                          #13
                          Re: Philips LCD 42PFL5432D/37 - Bad PSU

                          This is the "waiting for others to verify" part I was refering to. I don't know how the different series matches up (yet) between different manfacturers.

                          So far in bad caps, I personally have seen Samwha PNA, Elite (unknown - haven't desoldered it yet, but clearly bloated, Su'scon MG, Capxon KF, and Nichicon HM(M). So 5 different brands from 5 different devices.


                          Originally posted by momaka
                          Generally for KF series, you can use Panasonic FM or equivalent (possibly Chemicon KZE?). For KM, you can use Panasonic FC or equivalent (Chemicon KY/LXY/LXZ, or Nichicon PW/HE).
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                            #14
                            Re: Philips LCD 42PFL5432D/37 - Bad PSU

                            Does "GF" sound right? The only other writing on all four is p727 and "VENT" under that. In the meantime I'll look around and see if there is a Capxon GF series, but I will need help matching that up to a quality brand. Thanks in advance.

                            Update: It appears there is a GF series Capxon. Can you confirm?
                            Last edited by Lobo; 05-17-2010, 03:42 PM.

                            Comment

                              #15
                              Re: Philips LCD 42PFL5432D/37 - Bad PSU

                              Dude seriously, with there being only four caps to replace, this is getting to be too scientific. Keep it simple, this is your first recap.

                              Lets be real for a second. Even if you replaced these caps with the same brand (which I dont suggest), the unit may work for years. Some monitors with these bad brands dont fail until year 6 or longer. Even if you soldered in new capxon caps just to see if this fixes the unit, fine. Then you can take the time to enjoy what you have until you've done some research into some better caps just in case the unit fails later. Depending on how hard it is to take this thing apart though, you might just wanna do it right the first time.

                              Just dont get too caught up in the science of it all.
                              The strong-minded rise to the challenge of their goals,the weak-minded BECOME HATERS

                              Comment

                                #16
                                Re: Philips LCD 42PFL5432D/37 - Bad PSU

                                Originally posted by Lobo
                                Does "GF" sound right?
                                Yes. Now I see that you even mentioned it in your first post, but I just never saw it .

                                Anyways. Looks like United Chemicon KZE and Rubycon ZL are good matches for those CapXon GF caps. That means Panasonic FM would also work so any of these 3 choices should be good. According to datasheets, Nichicon HE and Chemicon KY are not as good as CapXon GF. But then again, CapXon GF are probably much better on paper than in real world applications, so HE and KY might also work.

                                You can get Chemicon KZE and Panasonic FM both from Digikey and Mouser. Same goes for Nichicon HE and Chemicon KY. Rubycon ZL is avaliable from here (badcaps.net), but I'm not sure if Top Cat has the ones you need, so you should check that.

                                Let us know how it goes and like Dgtech said, keep it simple and don't worry too much. Those CapXons are already bulged so you can't get much worse than that.
                                Last edited by momaka; 05-18-2010, 06:50 PM.

                                Comment

                                  #17
                                  Re: Philips LCD 42PFL5432D/37 - Bad PSU

                                  I checked here already for the OP. Topcat (not Tom - as I originally wrote earlier) has 2200uF 16V, but not 1500uF 35V as per

                                  https://www.badcaps.net/pages.php?vid=22

                                  which is why I suggested Digikey with the Panasonic FM part numbers. I just wasn't sure if this was the right Panasonic series or not.

                                  And yes, I agree that almost any type of cap will work with the other poster (including general purpose), BUT some members are quick to point out (in sometimes not so diplomatic ways) that you should match ripple, esr, etc by reading the datasheets.

                                  Originally posted by momaka
                                  Rubycon ZL is avaliable from here (badcaps.net), but I'm not sure if Top Cat has the ones you need, so you should check that.
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                                    #18
                                    Re: Philips LCD 42PFL5432D/37 - Bad PSU

                                    Thanks for the helpful suggestions guys. You're right that I still have a lot to learn so I will try to keep it simple for now. Today I received my replacement PSU and tried it out. Sure enough it was the problem. Thankfully I can RMA the PSU and save myself 85 dollars but first I will be taking a shot at fixing the old one myself. Thanks again for all your help.

                                    It's crazy when I think of all the electronics I've tossed over the years that probably could have been fixed with a soldering iron and nice people willing to share their knowledge.

                                    Comment

                                      #19
                                      Re: Philips LCD 42PFL5432D/37 - Bad PSU

                                      I found this page help full in repairing my Philips LCD 42PFL5432D/37, the same thing had happened after 2 year and 8 months It did the same thing, so I Google the tv shutting of a few second after turning it on, came across this page, ordered 5 dollars in capacitors, the tv had been working for a day now, awesome, it does have another problem sometimes we watch bluerays on our ps3 which is hooked up with a hdmi cable sometimes you have to restart the player several for the sound to work, have you had any problems with this

                                      Comment

                                        #20
                                        Re: Philips LCD 42PFL5432D/37 - Bad PSU

                                        I'd try that same player on another TV. I think it might be the player that has the problem.
                                        The strong-minded rise to the challenge of their goals,the weak-minded BECOME HATERS

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