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HP W2207 What are the right caps?

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    #1

    HP W2207 What are the right caps?

    Picked this up dead, opened it up and found some bulging caps. I always recap the whole thing to make sure, with low-ESR caps I get from Mouser.

    When I started listing the caps, I found some 125° caps in with the normal 105's. I went to Ebay and looked at 3 different cap kits to see what they included. None were the same as my board, and none had temp ratings other than 105° for all the caps in the kit. Some kits listed less 680 caps then I have, one listed an 820 cap I don't have, so I am now confused as to what is proper for this board.

    The power board is what seems to be the standard IL-PI-029 Rev:A.

    It doesn't look like any caps have been replaced, and they all are the (hated) Suscons. But, if someone replaced some caps on this board with the wrong ones, I want to make sure I use the right ones, and since I am going to replace all of them, I want to make sure they are right.

    So, I tried to write what these caps are on a photo, had to write on it and scan it in - I hope it is legible.

    I noted where the caps are 125°. They are: (3) 47uf 25V, (2) 470uf 16V, and one 10uf 25V.

    I have seen a bunch of posts from people familiar with this display, so I hope someone can help.

    My questions are:

    Are these the right caps on this board? Correct uf's?

    And, do I need 125° replacements, or just use the more readily available 105° ones and not worry about it?

    My hesitation is that the manufacturer probably used as cheap caps as they could, so if they felt it needed the higher temp caps in those spots I am concerned that it won't either be stable or last if I don't find the 125° ones. Or someone just used what they had.

    Thanks.
    Attached Files
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    #2
    Re: HP W2207 What are the right caps?

    Someone probably fixed that monitor before and used 125c capacitors instead of 105c capacitors.

    Usually, capacitors rated for higher temperature are more expensive and the cheaper ones don't have as good specs as the top 105c ones.

    I think you would be fine replacing those with 105c capacitors from good brands.
    I see you use Mouser and you seem to know what you're doing.

    Nichicon PW should work fine for 47uF and 10uF 25v - I would however just use 35-50v rated capacitors as I'm sure there's space on the board and those are usually rated for more hours compared to 16-25v caps from same series (different diameters).

    If you really want higher temperature, I can recommend Rubycon RX30 series (Farnell/Newark stocks them), they're usually rated for 2000h @ 130c or more... for example a 1000uF 35v capacitor is rated for 4k hours @ 130c but it's about 4$ a piece and doesn't match Panasonic FM or FR specs.

    For 470uF 16v, I would just use Panasonic FR rated for 25v, or FM. FR is better, more hours @ 105c but may be a bit taller.

    If it saves you money, use 1000uF 25v instead of 1000uF 10v as well, maybe it's cheaper to get a pack of 5 x 1000/25 instead of 2x1000/25 and 2x1000/16.

    Comment

      #3
      Re: HP W2207 What are the right caps?

      @tombodude
      Any chance you can post a few pictures of the other circuit boards of this monitor including cap spec and series names ?

      Have the same monitor awaiting a recap.

      Comment

        #4
        Re: HP W2207 What are the right caps?

        Originally posted by tombodude View Post
        My questions are:

        Are these the right caps on this board? Correct uf's?

        And, do I need 125° replacements, or just use the more readily available 105° ones and not worry about it?
        I have this exact monitor at home. I got it for free as a non working lcd. It was on the upstairs computer for about 1.5 years until I got another 22 inch monitor.

        I didn't make a cap list, but I only changed the two obvious bloated Suscon caps (the exact same 2 in your picture) as a long term personal self interest test.

        If memory serves, there were no factory installed caps rated at 125C. The monitor may last longer with 125C rated caps, but then the ccfls may die before the caps die?

        Just use Panasonic low ESR caps rated at 105C and it should be fine.

        I suggest you just change the 2 obviously blown caps first to ensure the lcd works and that the screen isn't cracked. Then, you can change out the rest of them once you confirm it works.

        PS. I also recall it being very tricky to open so I'm loathe to open it again.
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          #5
          Re: HP W2207 What are the right caps?

          Thanks for all your help. What I am wondering about is if the 680 cap is the right one or not, when the cap kits listed an 820 I don't seem to have but it's the same board.

          Comment

            #6
            Re: HP W2207 What are the right caps?

            Doesnt really matter, As long as it will physically fit you can use an 820 uf in place of a 680uf (but not the other way round). As long as the voltage is the same or a step higher.
            Please upload pictures using attachment function when ask for help on the repair
            http://www.badcaps.net/forum/showthread.php?t=39740

            Comment

              #7
              Re: HP W2207 What are the right caps?

              Originally posted by Gabriel View Post
              @tombodude
              Any chance you can post a few pictures of the other circuit boards of this monitor including cap spec and series names ?

              Have the same monitor awaiting a recap.
              As his boards have, it seems , been messed with you would be better just
              replacing like for like for what you have on your boards. You can then decide if you want to upgrade any from the comments made on here.
              Mariushm seems to know his caps and has suggested a few upgrades.
              Please upload pictures using attachment function when ask for help on the repair
              http://www.badcaps.net/forum/showthread.php?t=39740

              Comment

                #8
                Re: HP W2207 What are the right caps?

                I really appreciate the suggestions, but I still want to find an answer to my main question, which is what the factory farrads of the right caps are. Again, I will replace with good low esr caps and use 105's if that's the consensus, but I really don't want to have to go back into this monitor again and if I make sure then I won't have to (at least for caps).

                I like to be exact as I can, even though I know you can sometimes get away with a lot of fudging, I just want to make sure before I do it if I can. I would hate to give someone this monitor or worse yet ship it to someone and have it break down sooner than later because a cap or two was the wrong one.

                So, again, if anyone has this board, or is familiar with it, or has some kind of spec sheet for it, I would greatly appreciate it if you would check my marked-up picture and let me know if any of the caps seem the wrong rating.

                Comment

                  #9
                  Re: HP W2207 What are the right caps?

                  I think you are failing to grasp the fact that the boards in these monitors vary as they are produced. Following a lot of fail reports they will randomly change the value of caps and other components - resistors - diodes. Some boards have extra caps some less
                  (all these boards have the same number though a big change may make them add a version number. In addition they may run out of say 10v caps so they will just use 16v caps - similarly they could use 50v instead of 25v or 68uf instead of 47uf.
                  Schematics tend to reflect only the initial board plan and they often have extra positions for components which are left blank but are there in case of need.
                  They also use the same board for different monitor manufacturers and so the same board can have different spec components depending on what was agreed.
                  So the answer to your question is nobody really knows.
                  Please upload pictures using attachment function when ask for help on the repair
                  http://www.badcaps.net/forum/showthread.php?t=39740

                  Comment

                    #10
                    Re: HP W2207 What are the right caps?

                    Electrolytic caps generally have a +/- 20% rating. In addition, some circuit designs have multiple capacitors in parallel. The total capacitance is the sum of all the caps in parallel.

                    When you add these two up, sometimes going higher or lower doesn't affect the functionality of the circuit.

                    If you really want to find the values, I count at least 8 other threads with the W2207 keyword in the search that have pictures. One of those threads might have a clear focused picture of the caps in question.

                    Just keep in mind selldoor's comments. Manufacturers have and will routinely change components on the board without changing the schematics or revision number.
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                      #11
                      Re: HP W2207 What are the right caps?

                      For my current upstairs monitor, I didn't have certain uF cap values in hand so I went up and down to the nearest value. The LG has been working fine for 8+ months now.

                      I'm not paying $8 for shipping/handling for a single cap so that is why I did the above.

                      PS. I got the LG free and it was already 6 years old from the previous owner. All the caps on the board were bulged (all Capxon) and I have no idea how many hours are on the ccfl and how many I have left.

                      PPS. Cap kits on ebay are not always correct. The sellers sometimes lurk here and take values posted by others (which may not be correct). The kits may also not provide all the capacitors required.
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                        #12
                        Re: HP W2207 What are the right caps?

                        I took this picture almost 3 years ago. The angle doesn't show the values, but judging from the color, vent, and markings it appears you may have the original caps in your lcd.
                        Attached Files
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                          #13
                          Re: HP W2207 What are the right caps?

                          Thanks again. Selldoor, that all makes perfect sense to me now.

                          I will go ahead and use 105's and just match what's there. Now I just need to get some 1000 caps; I hate having most but not all of what I need and have to pay for a short order, and I don't have those.

                          I did read most of those threads, probably missed a good list of caps, but in light of the comments, I'm going to do it as above, just match what's there and see if that works.

                          It's really great to get the comments from all who have experience in these topics to make me feel comfortable in what I'm doing with learning this stuff.

                          Comment

                            #14
                            Re: HP W2207 What are the right caps?

                            Hey, thanks for the photo, retiredcaps, it looks exactly the same, down to the same two bulging caps as mine.

                            Comment

                              #15
                              Re: HP W2207 What are the right caps?

                              Originally posted by tombodude View Post
                              I hate having most but not all of what I need and have to pay for a short order, and I don't have those.
                              At least with digikey, you have reasonable shipping prices with quick delivery (generally less than $3 for caps).

                              If I order just caps from digikey, it will cost me $8 USD to ship to Canada.

                              If you work on your other problem and find a bad voltage regulator, then at least you can piggyback that onto the cap order.

                              1000uF is a pretty common value so you should stock up on it in 16V and 25V.

                              It's really great to get the comments from all who have experience in these topics to make me feel comfortable in what I'm doing with learning this stuff.
                              The regulars have seen a lot of stuff wrt to complete board changes/revisions while the model number is kept the same.
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                                #16
                                Re: HP W2207 What are the right caps?

                                PS. Just saw a reply to one my threads regarding an ATX power supply and look what I did ...

                                https://www.badcaps.net/forum/showpo...30&postcount=9

                                I doubled the capacitance and went down in voltage. And I didn't even bother matching ESR/ripple or anything.

                                No at all.

                                One day, I'll have to revisit that power supply and put in the properly capacitance value. Right now it is "fixed" and set aside.

                                Obviously, I don't advocate this type of approach and try to stick as close to the original values as possible, but sometimes when I don't have the right value cap and I want to experiment on my own personal/free/broken stuff ...
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                                  #17
                                  Re: HP W2207 What are the right caps?

                                  Ok, all, I recapped alll but the two 1000-25's I didn't have, but it came right up and worked. At first it didn't light up but the image was there, then I realized I hadn't plugged the bulbs back in!

                                  Now I have a really unusual problem I've never seen. The OSD menu will pop up at power up on top, then immediately pop over left so it is horizontal. It all works, but sideways. Tried monitor reset power off, through menu, rotated the display through Intel's driver app, nothing puts it right side up.

                                  Has anyone else ever seen this and if so, what the heck do I do to fix it?

                                  The same no matter which I/F is used, VGA or Digital.

                                  Comment

                                    #18
                                    Re: HP W2207 What are the right caps?

                                    Ok, I fixed my own issue. After realizing this monitor pivots, I then remembered I had to pivot the monitor slightly to access the VESA mount screws. Evidently, it was enough for the menu to come up sideways, even though the screen was oriented properly. When I put the stand back on, and turned it back to normal where it kind of clicks in, it fixed it!

                                    I'm not sure I will replace those final two caps (they are the 1000 25v Suscons) if it will last as long as the one RetiredCaps has since he only replaced the bad caps as an experiment. Thanks for all your help for a newbie on this. I will be requesting more help as I get to the rest of the monitors I have waiting to be fixed.

                                    Comment

                                      #19
                                      Re: HP W2207 What are the right caps?

                                      Originally posted by tombodude View Post
                                      After realizing this monitor pivots, I then remembered I had to pivot the monitor slightly to access the VESA mount screws.
                                      Hmm, I got mine without a stand and used a normal VESA stand.

                                      I had no idea this thing pivots.
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                                        #20
                                        Re: HP W2207 What are the right caps?

                                        Well done! - Thanks for reporting back.
                                        Please upload pictures using attachment function when ask for help on the repair
                                        http://www.badcaps.net/forum/showthread.php?t=39740

                                        Comment

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