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    #1

    Samsung 223bw

    Hey,
    I'm a homeschooled college student starting an electronics repair business in my basement. I've got a Samsung 223bw monitor as my first outside job (I've repaired two of my own monitors). I opened it up and noticed several bloated caps. They are Samsung XC series caps, 105 degrees, 25v, and 820uF and 330 uF. I am getting replacements for these on mouser. Will general purpose capacitors work okay, or do I need low impedance or low esr? Should I recap the whole board or just the bloated ones? Your help is greatly appreciated!
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    #2
    Re: Samsung 223bw

    Originally posted by Buddierdl
    Hey,
    I'm a homeschooled college student starting an electronics repair business in my basement. I've got a Samsung 223bw monitor as my first outside job (I've repaired two of my own monitors). I opened it up and noticed several bloated caps. They are Samsung XC series caps, 105 degrees, 25v, and 820uF and 330 uF. I am getting replacements for these on mouser. Will general purpose capacitors work okay, or do I need low impedance or low esr? Should I recap the whole board or just the bloated ones? Your help is greatly appreciated!
    A student, huh? The information is here on this site. By rights I should make you look it up for yourself. DO take the time to review https://www.badcaps.net/forum/forumdisplay.php?f=24 before you start working on other's equipment. Your reputation is at stake.

    Do NOT use general purpose caps. They will work for a while, then fail. This will result in former customers complaining about the poor work you do.

    Use high temperature (105°C) low ESR caps. I personally prefer Panasonic FM and FC series. If bloated caps are found, replace all caps of the same brand, with the exception of the large 450 volt, 100 uF cap. I also suggest you investigate Digikey. Their First Class Mail shipping option will save you time and money on small orders. In general it is possible to recap an entire monitor for less than $10.00 in parts.

    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

      #3
      Re: Samsung 223bw

      Thanks for the reply. I'll definitely check out Digi-key. Low esr capacitors apply to monitor inverter boards as well as to MOBOs, right? Do they also need to be low impedance?

      Comment

        #4
        Re: Samsung 223bw

        Originally posted by Buddierdl
        Thanks for the reply. I'll definitely check out Digi-key. Low esr capacitors apply to monitor inverter boards as well as to MOBOs, right? Do they also need to be low impedance?
        I use Panasonic FM or FC series in all applications. The few dimes saved on a lesser cap aren't worth the hassle of the additional stock. I'm trying to get one monitor working well, not building 100,000 at the lowest possible cost while hoping most will survive the warranty period.

        It's always a good idea to compare the specs (ESR, impedance and dimensions) of any replacement cap with the original.

        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

          #5
          Re: Samsung 223bw

          I can't find anything on the Samsung XC series capacitors. They sold their capacitor business in 2002.

          Comment

            #6
            Re: Samsung 223bw

            Also, the FM and FC series Panasonic capacitors are too tall (25mm instead of 20). It seems that low esr caps are taller.

            Comment

              #7
              Re: Samsung 223bw

              Originally posted by Buddierdl
              Also, the FM and FC series Panasonic capacitors are too tall (25mm instead of 20). It seems that low esr caps are taller.
              Not necessarily. Many of the popular sizes of caps are available in two height / diameter combinations. It isn't necessary to match the original dimensions, it IS necessary to choose a capacitor that will fit in the available space.

              Again, READ THE FAQ!! https://www.badcaps.net/forum/showthread.php?t=2280
              https://www.badcaps.net/forum/showthread.php?t=613

              If you REALLY aren't up to locating the proper caps, post the vital information (capacitance, voltage, manufacturer, series, height, and diameter) for each capacitor. Eventually someone will respond with a list of replacements. Oh, it's a good idea to identify what country you are in.

              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

                #8
                Re: Samsung 223bw

                I've checked all the capacitors on the good capacitors list and I only found a few that are the rights size that are carried at digi-key or mouser. The HV Nichicons are the only ones of the right size, but there is no stock of one value that I need. I don't think that I should mix series... Any advice? I can't wait 12 weeks leadtime and I can't order larger caps. The current ones barely fit.
                Last edited by Buddierdl; 11-11-2009, 07:04 PM.

                Comment

                  #9
                  Re: Samsung 223bw

                  Originally posted by Buddierdl
                  I've checked all the capacitors on the good capacitors list and I only found a few that are the rights size that are carried at digi-key or mouser. The HV Nichicons are the only ones of the right size, but there is no stock of one value that I need. I don't think that I should mix series... Any advice? I can't wait 12 weeks leadtime and I can't order larger caps. The current ones barely fit.
                  Mixing series (or manufacturers) is fine. As often as not when I open a monitor I will find two or three different manufacturers / series of caps in them. The buy from whoever will give them the best price - which is the source of a lot of the troubles.

                  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

                    #10
                    Re: Samsung 223bw

                    Is there really 25v on those caps or less, like 12v? I am pretty sure the last Samsung LCD power supply I recapped has 25v caps and was really 12v, so I replaced them with 16v Panasonic FM. Also, is anything stopping you from leaving the leads long and folding the capacitor over onto the circuit board?

                    Comment

                      #11
                      Re: Samsung 223bw

                      Is it okay to use a higher voltage? Do you think it would be better to use higher voltage with the same lead spacing, or right voltage with smaller lead spacing and bend the leads?

                      Comment

                        #12
                        Re: Samsung 223bw

                        Originally posted by Buddierdl
                        Is it okay to use a higher voltage? Do you think it would be better to use higher voltage with the same lead spacing, or right voltage with smaller lead spacing and bend the leads?
                        I'd say six of one, half a dozen of the other. The only precaution would be to take care not to disturb the leads and break the seal where they enter the rubber bung.

                        Originally posted by MixMasta
                        Is there really 25v on those caps or less, like 12v? I am pretty sure the last Samsung LCD power supply I recapped has 25v caps and was really 12v, so I replaced them with 16v Panasonic FM. Also, is anything stopping you from leaving the leads long and folding the capacitor over onto the circuit board?
                        It depends on the power supply. The vast majority have 5 Volt and 12 (or 13) Volt outputs. However, some have higher voltage outputs. The highest I have seen was 18 Volts; someone else reported a 24 Volt output.

                        Bending the leads has good and bad effects. It results in longer leads, thus increased (slightly) impedance. It also can get the capacitor away from the heat sinks, always desirable.

                        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

                          #13
                          Re: Samsung 223bw

                          Is the Nichion HD series 330 uF 35V 105 degree capacitor a suitable replacement for the Samsung XC series 330 uF 25V 105 degree capacitor?

                          Comment

                            #14
                            Re: Samsung 223bw

                            Originally posted by Buddierdl
                            Is the Nichion HD series 330 uF 35V 105 degree capacitor a suitable replacement for the Samsung XC series 330 uF 25V 105 degree capacitor?
                            Without specs of the Samsung XC series it's hard to be sure, but it certainly should be. One question - why are you going with a higher voltage replacement?

                            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

                              #15
                              Re: Samsung 223bw

                              I'm going with higher voltage because its the right size and in stock. I just found the Nichicon PJ, PS, and TS series are for switching power supplies, but these are not listed on the good list. Are these good to use, since I'm repairing the power supply in the monitor?

                              Comment

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