I-Inc iF191D Bad Saxon caps

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  • enduser
    Member
    • Mar 2010
    • 15
    #1

    I-Inc iF191D Bad Saxon caps

    I was given a 19" I-Inc iF191D monitor that was built in Aug 2008. When powered ON, the green power LED indicator would flash ON/OFF but there is no video present. I opened the monitor and inspected the power supply section and immediately found several Saxon caps leaking electrolytic, with swollen tops.

    C14, C113, C118, Saxon 1000uF/25V, 105C, SF(M), leaking/swollen tops
    C119 Saxon 470uF/25V 105C swollen top

    I replaced these and all other Saxon caps on the power supply board, and the monitor now works great.
    Tags: None
    • retiredcaps
      Badcaps Legend
      • Apr 2010
      • 9271
      #2
      Re: I-Inc iF191D Bad Saxon caps

      Originally posted by enduser
      I was given a 19" I-Inc iF191D monitor that was built in Aug 2008.

      I replaced these and all other Saxon caps on the power supply board, and the monitor now works great.
      Sad. The "Saxon" caps barely lasted 2 years.

      BTW, do you mean Samxon?
      Last edited by retiredcaps; 12-21-2010, 07:16 PM.
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        Comment

        • PCBONEZ
          Grumpy Old Fart
          • Aug 2005
          • 10661
          • USA
          #3
          Re: I-Inc iF191D Bad Saxon caps

          Saxon ain't Samxon.
          .
          I don't think I've seen Saxon caps.
          Have photos?
          Mann-Made Global Warming.
          - We should be more concerned about the Intellectual Climate.
          -
          Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
          - Dr Seuss
          -
          You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
          -

            Comment

            • enduser
              Member
              • Mar 2010
              • 15
              #4
              Re: I-Inc iF191D Bad Saxon caps

              Sorry for the confusion... as I don't see a way to fix a typo in this forum. Yes they are indeed SAMXON

                Comment

                • retiredcaps
                  Badcaps Legend
                  • Apr 2010
                  • 9271
                  #5
                  Re: I-Inc iF191D Bad Saxon caps

                  Originally posted by enduser
                  Sorry for the confusion... as I don't see a way to fix a typo in this forum. Yes they are indeed SAMXON
                  I know, personally, I have bad Samxon GF caps. I wonder if SF will be a problem as well? Especially for 2008 caps?
                  --- begin sig file ---

                  If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.

                  We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.

                  Please do not post inline and offsite as they slow down the loading of pages.

                  --- end sig file ---

                    Comment

                    • PCBONEZ
                      Grumpy Old Fart
                      • Aug 2005
                      • 10661
                      • USA
                      #6
                      Re: I-Inc iF191D Bad Saxon caps

                      GF was a problem series.
                      I think there were at least two other problem Samxon series.
                      Mostly show up in old TV's, monitors, and networking stuff.
                      .
                      Mann-Made Global Warming.
                      - We should be more concerned about the Intellectual Climate.
                      -
                      Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
                      - Dr Seuss
                      -
                      You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
                      -

                        Comment

                        • oblivion2k
                          New Member
                          • Aug 2011
                          • 5
                          #7
                          Re: I-Inc iF191D Bad Saxon caps

                          I've got the same monitor, but it appears to be a different board revision, none of the Cxxx numbers line up. I've got 3 capacitors that appear to be swollen and one that's swollen and leaking slightly. There's also the smaller capacitors that aren't the tube-style and I can't diagnose them just by looking, and since I don't have a voltimeter that can read capacitors I think I'm SOL for the moment, unless you guys have anything to suggest.

                            Comment

                            • jetadm123
                              Badcaps Legend
                              • Feb 2010
                              • 2169
                              #8
                              Re: I-Inc iF191D Bad Saxon caps

                              Originally posted by oblivion2k
                              I've got the same monitor, but it appears to be a different board revision, none of the Cxxx numbers line up. I've got 3 capacitors that appear to be swollen and one that's swollen and leaking slightly. There's also the smaller capacitors that aren't the tube-style and I can't diagnose them just by looking, and since I don't have a voltimeter that can read capacitors I think I'm SOL for the moment, unless you guys have anything to suggest.
                              Here's the problem: You have a different board revision with different cap numbers silk-screened on the board. They're probably different capacitance values to boot. However, since you've provided no photos, I think it's safe to say no one here can really help you. The general rule of thumb is that if a few caps are leaking, then you replace all the electrolytic caps with the exception of the large 450V cap (unless it's also leaking). Suggested replacements are Panasonic FR, FM or FC series caps. If more help is needed, take a good focused top view photo of your board and use the "manage attachments" button to post it.

                                Comment

                                • PCBONEZ
                                  Grumpy Old Fart
                                  • Aug 2005
                                  • 10661
                                  • USA
                                  #9
                                  Re: I-Inc iF191D Bad Saxon caps

                                  You find the "manage attachments" button by going into advanced mode "Go Advanced" down below.
                                  In the next screen scroll down and you'll see it.
                                  .
                                  Mann-Made Global Warming.
                                  - We should be more concerned about the Intellectual Climate.
                                  -
                                  Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
                                  - Dr Seuss
                                  -
                                  You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
                                  -

                                    Comment

                                    • oblivion2k
                                      New Member
                                      • Aug 2011
                                      • 5
                                      #10
                                      Re: I-Inc iF191D Bad Saxon caps

                                      Alright, here's the picture, I think it turned out good enough. Let me know what you think. Thanks for the help so far.
                                      Attached Files

                                        Comment

                                        • jetadm123
                                          Badcaps Legend
                                          • Feb 2010
                                          • 2169
                                          #11
                                          Re: I-Inc iF191D Bad Saxon caps

                                          Yes, definitely replace ALL the caps with the exception of the large 400V one. I count 11 caps. You can purchase the recommended caps from digikey.com. Select USPS shipping for lowest cost shhipping.

                                            Comment

                                            • oblivion2k
                                              New Member
                                              • Aug 2011
                                              • 5
                                              #12
                                              Re: I-Inc iF191D Bad Saxon caps

                                              What do you suggest doing about the tiny blue capacitors?

                                                Comment

                                                • jsog
                                                  Badcaps Veteran
                                                  • Feb 2011
                                                  • 220
                                                  #13
                                                  Re: I-Inc iF191D Bad Saxon caps

                                                  The blue caps are ceramic, and rarely go bad.

                                                    Comment

                                                    • PCBONEZ
                                                      Grumpy Old Fart
                                                      • Aug 2005
                                                      • 10661
                                                      • USA
                                                      #14
                                                      Re: I-Inc iF191D Bad Saxon caps

                                                      Originally posted by jsog
                                                      The blue caps are ceramic, and rarely go bad.
                                                      Yes
                                                      Mann-Made Global Warming.
                                                      - We should be more concerned about the Intellectual Climate.
                                                      -
                                                      Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
                                                      - Dr Seuss
                                                      -
                                                      You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
                                                      -

                                                        Comment

                                                        • PCBONEZ
                                                          Grumpy Old Fart
                                                          • Aug 2005
                                                          • 10661
                                                          • USA
                                                          #15
                                                          Re: I-Inc iF191D Bad Saxon caps

                                                          [Edit]
                                                          I found the data sheet. - Couldn't find it the first time I looked.
                                                          Attached Files
                                                          Last edited by PCBONEZ; 08-10-2011, 06:45 PM.
                                                          Mann-Made Global Warming.
                                                          - We should be more concerned about the Intellectual Climate.
                                                          -
                                                          Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
                                                          - Dr Seuss
                                                          -
                                                          You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
                                                          -

                                                            Comment

                                                            • oblivion2k
                                                              New Member
                                                              • Aug 2011
                                                              • 5
                                                              #16
                                                              Re: I-Inc iF191D Bad Saxon caps

                                                              Good to hear jsog, we had no idea what to do with those since they didn't even have their specifications printed on them. Digikey is missing a few capacitors that I need, a 50v 2.2uf, two 10v 1000uf's and a 10v 470uf (out of stock on the last one, no sign of the first two). There's a radioshack/tv repair store a few miles away from me, I'll check them out. 7 out of the 11 capacitors I tested with my friend's voltimeter showed they were bad, so I'm just gonna replace them all as you suggested. I'll get back once I have the capacitors.
                                                              Thanks for the data sheet Pcbonez. I'll just have to write down the polarity for each connector before I take off the bad caps or I'm gonna fry the board for sure :P

                                                                Comment

                                                                • PCBONEZ
                                                                  Grumpy Old Fart
                                                                  • Aug 2005
                                                                  • 10661
                                                                  • USA
                                                                  #17
                                                                  Re: I-Inc iF191D Bad Saxon caps

                                                                  Radioshack does not sell low ESR caps.
                                                                  .
                                                                  Try Mouser.com
                                                                  .
                                                                  Mann-Made Global Warming.
                                                                  - We should be more concerned about the Intellectual Climate.
                                                                  -
                                                                  Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
                                                                  - Dr Seuss
                                                                  -
                                                                  You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
                                                                  -

                                                                    Comment

                                                                    • jsog
                                                                      Badcaps Veteran
                                                                      • Feb 2011
                                                                      • 220
                                                                      #18
                                                                      Re: I-Inc iF191D Bad Saxon caps

                                                                      Originally posted by oblivion2k
                                                                      Digikey is missing a few capacitors that I need, a 50v 2.2uf,
                                                                      2.2uF, 50V Panasonic FC

                                                                      two 10v 1000uf's and a 10v 470uf (out of stock on the last one, no sign of the first two).
                                                                      Depends on the brand, series, and size. Put 1000uf 10v in the search and narrow it down from there. If you know the series, put that in too, like 470uf 10v PM for Nichicon PM series. Come to think of it... 10V? Are those original caps? Usually they'd be at least 16V.

                                                                        Comment

                                                                        • PCBONEZ
                                                                          Grumpy Old Fart
                                                                          • Aug 2005
                                                                          • 10661
                                                                          • USA
                                                                          #19
                                                                          Re: I-Inc iF191D Bad Saxon caps

                                                                          They often use caps of higher than necessary voltage to get a larger can which gives better Ripple and/or ESR.
                                                                          Can achieve the same thing by using a higher grade or a longer cap without the higher voltage.

                                                                          BUT: If you are going to reduce voltage from the original you need to check what the actual circuit voltage is.
                                                                          The voltage rating of the cap should be higher than the actual circuit voltage.
                                                                          .
                                                                          Mann-Made Global Warming.
                                                                          - We should be more concerned about the Intellectual Climate.
                                                                          -
                                                                          Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
                                                                          - Dr Seuss
                                                                          -
                                                                          You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
                                                                          -

                                                                            Comment

                                                                            • oblivion2k
                                                                              New Member
                                                                              • Aug 2011
                                                                              • 5
                                                                              #20
                                                                              Re: I-Inc iF191D Bad Saxon caps

                                                                              Bought all the capacitors I needed. A friend at a local tv repair shop put in an order for me. We are working on it right now. Wish me luck!

                                                                                Comment

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