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    GeForce 7600 GS

    Hello,

    Trying to revive an old card. It's a GeForce 7600 GS (circa 2008). I use it as a backup card (not used much), and it was working until recently. The card fan spins, but the computer won't boot. Nothing on the screen either. Motherboard gives me a diagnostic code indicating video trouble.

    All the caps look ok from the outside. No breaks or bulges. But might as well replace them insteading of buying a new card.

    I see three brown KZG caps:
    6.3v 1500uF, 10mm

    Another brown KZG cap:
    16v 470uF, 8mm

    Two silver caps:
    16v 330uF, 10mm

    I have some questions. The brown caps have vents on the top, but the silver caps don't. Guessing that has something to do with their temp. rating of 70F.
    Do I have to replace a non-vented cap with a non-vented cap? Is there a special name for these non-vented caps? Or should I just leave them alone?

    Digikey cap replacement suggestions are welcomed.

    Thanks.
    Attached Files

    #2
    Re: GeForce 7600 GS

    The silver caps do [most likely] have vents but the vents are not visible do to the markings being on top of the caps.

    And no, you don't need to replace a non-vented cap with another non-vented cap [i don't think anyone sells new non-vented caps of the 10mm size anymore.]
    Last edited by RukyCon; 03-04-2017, 06:27 AM.
    I'm not a expert, I'm just doing my best.

    Comment


      #3
      Re: GeForce 7600 GS

      The 330uF 16v capacitors are polymer capacitors, which don't have a liquid or semi-liquid electrolyte in them which would produce gas when damaged. So there's no risk of explosion, so there's no need to create a vent on top of the capacitor, so that's why there's no grooves at the top.
      70F is either a code name, a series code of the manufacturer, or just some code telling the manufacturing date or batch number of the capacitor, something not relevant or helpful to us..

      Based on the tiny logo, it's an "United Chemi Con" polymer capacitor, but off the top of my head I couldn't tell you the series.
      You can replace with any low esr 330uF 16v polymer capacitor if you really want to, but they're unlikely to be bad.

      KZG is known series to go bad even without swelling. Replace with low esr polymer capacitors if you want (same capacitance and voltage, actually with polymers you could probably go with 1200uF or even 1000uF if you want, it would probably be fine), or replace with low esr electrolytic like Panasonic FM or Panasonic FR series (keep capacitance of 1500uF, but if you have room on the video card, height and diameter, you could go for 10v or 16v rated versions without any problems)

      suggestions .. from cheaper to more expensive

      electrolytic 1500uF 6.3v replacements (some may be rated for higher voltage, they'll be fine)

      UHM1A152MPD6 Nichicon CAP ALUM 1500UF 20% 10V RADIAL 452 - Immediate
      0.46000
      http://www.digikey.com/product-detai...PD6-ND/2428115

      EKZH6R3ELL152MH20D United Chemi-Con CAP ALUM 1500UF 20% 6.3V RADIAL 3,185 - Immediate
      0.56000
      http://www.digikey.com/product-detai...543-ND/3529175

      16ZLJ1500M10X20 Rubycon CAP ALUM 1500UF 20% 16V RADIAL 1,887 - Immediate
      0.62000
      http://www.digikey.com/product-detai...152-ND/3134110

      EKZE6R3ELL152MJ20S United Chemi-Con CAP ALUM 1500UF 20% 6.3V RADIAL 5,221 - Immediate
      0.63000
      http://www.digikey.com/product-detai...1633-ND/756149

      EKY-160ELL152MJ30S United Chemi-Con CAP ALUM 1500UF 20% 16V RADIAL 5,444 - Immediate
      0.64000
      http://www.digikey.com/product-detai...1530-ND/756046

      EEU-FR1A152L Panasonic Electronic Components CAP ALUM 1500UF 20% 10V RADIAL 5,950 - Immediate
      0.65000
      http://www.digikey.com/product-detai...379-ND/2433513

      EEU-FR0J152LB Panasonic Electronic Components CAP ALUM 1500UF 20% 6.3V RADIAL 698 - Immediate
      0.66000
      http://www.digikey.com/product-detai...6CT-ND/3072186


      polymer 1500uF 6.3v

      RNU0J152MDN1PH Nichicon CAP ALUM POLY 1500UF 6.3V T/H 1,102 - Immediate
      0.81000
      http://www.digikey.com/product-detai...2-1-ND/3768614

      APSC6R3ELL152MJB5S United Chemi-Con CAP ALUM POLY 1500UF 6.3V T/H 1,011 - Immediate
      1.43000
      http://www.digikey.com/product-detai...229-ND/1826693

      6SEPC1500M+T Panasonic Electronic Components CAP ALUM POLY 1500UF 6.3V T/H 710 - Immediate
      2.32000
      http://www.digikey.com/product-detai...9CT-ND/4204423


      470uF 16v

      electrolytic

      16ZLH470MEFC8X11.5 Rubycon CAP ALUM 470UF 20% 16V RADIAL 41,642 - Immediate
      0.40000
      http://www.digikey.com/product-detai...859-ND/3563382

      EEU-FM1C471L Panasonic Electronic Components CAP ALUM 470UF 20% 16V RADIAL 15,681 - Immediate
      0.45000
      http://www.digikey.com/product-detai...2376-ND/613737

      EEU-FR1C471 Panasonic Electronic Components CAP ALUM 470UF 20% 16V RADIAL 5,388 - Immediate
      0.45000
      http://www.digikey.com/product-detai...394-ND/2433528

      EEU-FM1C471 Panasonic Electronic Components CAP ALUM 470UF 20% 16V RADIAL 9,793 - Immediate
      0.46000
      http://www.digikey.com/product-detai...2375-ND/613736

      EKZE160ELL471MH15D United Chemi-Con CAP ALUM 470UF 20% 16V RADIAL 7,371 - Immediate
      0.48000
      http://www.digikey.com/product-detai...1661-ND/756177


      polymer

      RNE1C471MDN1 Nichicon CAP ALUM POLY 470UF 20% 16V T/H 383 - Immediate
      0.82000
      http://www.digikey.com/product-detai...786-ND/4991475

      PLF1C471MDO1 Nichicon CAP ALUM POLY 470UF 20% 16V T/H 9,375 - Immediate
      0.89000
      http://www.digikey.com/product-detai...019-ND/1136109

      RNE1C471MDN1PX Nichicon CAP ALUM POLY 470UF 20% 16V T/H 17,717 - Immediate
      0.92000
      http://www.digikey.com/product-detai...4-1-ND/2239227

      16SEPC470M Panasonic Electronic Components CAP ALUM POLY 470UF 20% 16V T/H 11,528 - Immediate
      1.16000
      http://www.digikey.com/product-detai...299-ND/4204136

      APSF160ELL471MJB5S United Chemi-Con CAP ALUM POLY 470UF 20% 16V T/H 2,530 - Immediate
      1.27000
      http://www.digikey.com/product-detai...617-ND/3528479



      330uf 16v (don't really have to replace them but listing just in case)

      http://www.digikey.com/product-detai...796-ND/4991607
      http://www.digikey.com/product-detai...718-ND/2207254
      http://www.digikey.com/product-detai...0-1-ND/3768610
      http://www.digikey.com/product-detai...776-ND/2549476
      http://www.digikey.com/product-detai...9-1-ND/3466040




























      1

      Comment


        #4
        Re: GeForce 7600 GS

        Thanks for the replies.

        Yes, polymer capacitors. I think you're right.

        I forgot to mention about a month ago, my card overheated and stopped working after about 30 min of use. I noticed this happened because my fan stopped spinning. Apparently, it got gunked up by an acculumation of dust over the years. After putting some oil on it, I got it spinning again, and everything worked as before.

        But, this overheating must of had some effect on the board. Probably accelerated the death of its components without showing any signs?

        Comment


          #5
          Re: GeForce 7600 GS

          those are chemicon psc polymers, one of the best polymers around. the gpu will probably fail first before the poly caps, so no need to replace them.

          however, it could also be the gpu died because it overheated. never let a gf6/7/8 series gpu overheat or run hotter than 60°C because they are affected by something called the bumpgate scandal in which faulty materials were used in manufacturing the gpu chip. this faulty material kills the gpu slowly if it runs over 60°C. above 80°C, the gpu dies a fast death. reflowing wont "fix" that. the chip is dead *permanently*.

          so what u can try is to just solder caps to the underside of the board, on the legs of the current caps to see if that gives some signs of life to the video card. therefore, dont spend too much money on caps. just buy the cheapest electrolytic caps that were suggested by mariushm, in case it wasnt the caps but the gpu that died. i myself am hoping its the caps that died not the gpu as the gf7 series was the last agp series by nvidia so its a nice card. i'm hoping the gpu chip is still alive.

          in the event, the card does come back to life, i suggest replacing the heatsink with something better. the stock fan is just crap and will fail again.
          Last edited by ChaosLegionnaire; 03-05-2017, 10:04 PM.

          Comment


            #6
            Re: GeForce 7600 GS

            I'm hoping the card is still good. It's getting power and the fan is spinning. It's just not outputting video. And it did work a couple times after overheating once, so something must have slowly failed.

            I will replace all the brown caps first, try it out. If it doesn't work, I will replace the silver caps and hope for the best.

            Comment


              #7
              Re: GeForce 7600 GS

              Just an update. I tried everything, but I can't get the card to work.

              First of all, I couldn't remove the caps. I think the holes were too small, couldn't get enough heat in them, so the solder wouldn't flow. I just have a 45-watt hobby Desoldering iron, btw.

              So, I tried soldering the caps on the back of the board, as suggested, but I still get a black screen on startup.

              I guess it's not a cap problem.
              Last edited by samsonite; 03-12-2017, 09:10 PM.

              Comment


                #8
                Re: GeForce 7600 GS

                the board looks like its a multi-layer pcb and uses lead-free solder. for those kinda boards, u need a 60-80w or maybe even a 100w soldering iron to melt the solder due to the higher melting point of lead-free solder.

                since the problem symptoms did not change, yes, quite likely it isnt the caps. when u pulled the fan to re-oil it, did u reapply the thermal paste as well? many stock thermal pastes are just crap and would have dried out by now. if thats the case, pulling the heatsink and putting it back without reapplying the paste would have accelerated failure of the gpu through higher running temperatures.

                Comment


                  #9
                  Re: GeForce 7600 GS

                  ah well, if u want a replacement card, i found a listing on ebay of a used xfx 512mb 7600 gs agp going for a SB of $5 and $6-10 shipping depending on where u are in the states. the bad news about that card is that it also has caps with a Y vent which most likely indicates more kzg caps but u can recap it now that u have the parts to do so.

                  Comment


                    #10
                    Re: GeForce 7600 GS

                    With this card, you can unscrew the fan without removing the heat sink, so nope, I didn't reapply any thermal paste.

                    And, getting the same card isn't a big deal for me.

                    For a new AGP card, $40 bucks is the cheapest I could find:
                    https://www.amazon.com/EVGA-GeForce-...6NU/ref=sr_1_1

                    Comes with a huge heatsink, and no fan.

                    Comment


                      #11
                      Re: GeForce 7600 GS

                      If you have the proper tools, i would try a reflow, it won't be a long term fix, but it's better than using the card as paperweight.

                      Comment


                        #12
                        Re: GeForce 7600 GS

                        The card is probably dead due to the bumpgate issue, as ChaosLegionnaire mentioned. Sometimes, you can bring back these video cards with a reflow (as the high temperatures required for reflow can also temporarily fix the bumpgate issue between core and substrate solder), but chances are slim. And if you do get it working, you need to get a much better heatsink to keep the temperatures under 60C under any load (preferably under 50C, if possible). Otherwise, it will fail again.

                        If you choose not to repair the card, let me know. I might be interested in buying it, as I like to fiddle with broken stuff (I also have two GF 7600 GT PCI-E video cards that possibly still have good GPU chips on them).

                        Comment


                          #13
                          Re: GeForce 7600 GS

                          Originally posted by samsonite View Post
                          With this card, you can unscrew the fan without removing the heat sink, so nope, I didn't reapply any thermal paste.

                          And, getting the same card isn't a big deal for me.

                          For a new AGP card, $40 bucks is the cheapest I could find:
                          https://www.amazon.com/EVGA-GeForce-...6NU/ref=sr_1_1

                          Comes with a huge heatsink, and no fan.
                          Are you looking for something comparable to the GeForce 7600 or just an AGP video card (i.e. have a motherboard with no integrated graphics but don't game or do anything requiring much gpu power)?

                          If you're looking for something equivalent you may be better off with an ATI card given that most NVidia cards from that era are affected by the bumpgate mess. The Radeon X1650, X1900, HD 2400, HD 2600, HD 3450, HD 3650, HD 3850, and HD 4350 are all available in AGP and will meet or exceed the performance of the GeForce 7600 gs.

                          If you just need an AGP card to output video and don't care about performance the GeForce FX5200/FX5500 and Radeon 9200/9250/9500/9550 are cheap as dirt (easy to find for less than $10 on ebay) and tend to be fairly reliable (especially passively cooled versions that don't have failure-prone fans), the Radeon X1050 and GeForce 6200 (which you link'ed) are also decent options for more "recent" (though still entry level when new offering lower performance than the GeForce 7600 did) cards and can often be found used for less than $20. If you must have a brand new (not used or NOS) card, the GeForce 6200 is probably about your only option, there aren't very many AGP cards being made these days since that interface has been considered "obsolete" for over a decade now.
                          Last edited by dmill89; 03-19-2017, 10:01 PM.

                          Comment


                            #14
                            Re: GeForce 7600 GS

                            Originally posted by dmill89 View Post
                            If you're looking for something equivalent you may be better off with an ATI card given that most NVidia cards from that era are affected by the bumpgate mess. The Radeon X1650, X1900, HD 2400, HD 2600, HD 3450, HD 3650, HD 3850, and HD 4350 are all available in AGP and will meet or exceed the performance of the GeForce 7600 gs.
                            As much as I like ATI cards, I just bought a x1650 AGP not too long ago, and it runs HOT! In particular, the small PCIE-to-AGP bridge chip on the back (ATI Realto?) is what runs too hot (enough that it scorched the skin on my finger!) That's why many of these die prematurely. Also, from what I've seen, ATI does not offer H.264 hardware acceleration pretty much until the HD3x00 generation. So if you want smoother video experience, especially with Youtube, you might want to look into the GeForce 7 series. Actually, even the 6 series supports hardware H.264, but they are not as good as the 7 series (but still way better than ATI).

                            And of course, if you don't need any of that stuff, then do as dmill89 suggested and just get a low-end Radeon video card like the 7000/9200/9250 or GeForce MX420/440 or FX5200. All of these are also very reliable, because they use leaded solder and non-flip-chip technology. And they run fairly cool, despite being cooled passively.
                            Last edited by momaka; 03-29-2017, 05:58 AM.

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