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Suspect Bad PS Apple AcBel API 1PC36

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    Re: Suspect Bad PS Apple AcBel API 1PC36

    I would personally call it 'a shitty design'

    Older AT connectors were MUCH better IMO. Had their own springy connections, like molex connectors have for fans.

    Hdd conectors cause similar issues. Floppy drive connectors - never seen one do that.

    Comment


      Re: Suspect Bad PS Apple AcBel API 1PC36

      It's always a matter of them saving a few cents here and a few there - such as it is today with everything today

      I reworked the pins and threw in the twist. Started it up with the case open. Once it was booted I closed the case. Hurray!!! it's still running.

      Because of Toasty's efforts and the rest of you at Badcaps I have my computer back. Of course I had a cooling issue to iron out, but fixing a stopped fan and some new thermal paste on the cpu chips - this computer has never been this cool and quiet.

      Comment


        Re: Suspect Bad PS Apple AcBel API 1PC36

        Sweet. Let it serve you well.

        Comment


          Re: Suspect Bad PS Apple AcBel API 1PC36

          Use a straight pin or push pin on one side then the other of each female connector pin. Between the housing plastic and the connector. You want to do it on either side of the "split" not on the "split" side or the side opposite it.

          Squeeze it this way ---> [_] <---

          Using a pin gives you much greater control than a pair of tweezers or pliers.
          veritas odium parit

          Comment


            Re: Suspect Bad PS Apple AcBel API 1PC36

            Nice pin graphic Toast.

            I've worked the pins twice now, each time with a tiny jewelers straight slot screwdriver. I think I have them as good as they are gonna get.

            I'm 'pressure testing' the computer as I type this. I was told a computer vs computer chess game x10 will ask everything possible of a processor. It's in it's third match and the processor temp is steady at ~60ยบ so it's doing great!!!

            It's appearing this computer is up for another round of work (or play) . I've had it since it was new back in 02 or 03 and I think it's working better now than when I got it.

            There's a ton of info in this thread, hoping it will pay dividends to someone someday. You guys here at Badcaps deserve a salute.

            Comment


              Re: Suspect Bad PS Apple AcBel API 1PC36

              Just keep the A.E.D. nearby....

              CLEAR !!!


              veritas odium parit

              Comment


                Re: Suspect Bad PS Apple AcBel API 1PC36

                These caps will arrive tomorrow and my AcBel is desoldered and ready to receive. This list was clipped out of the Digikey confirmation file and doesn't give the specs. I used this thread as a guide for cap specs and hope I got it right.

                1 493-1578-ND UHE1V221MPD CAP ALUM 220UF 35V 20%
                1 493-1547-ND UHE1E470MDD CAP ALUM 47UF 25V 20%
                1 565-1532-ND EKY-160ELL222MK25S CAP ALUM 2200UF 16V 20%
                1 493-1473-ND UHE0J272MPD6 CAP ALUM 2700UF 6.3V 20%
                2 493-1472-ND UHE0J222MPD CAP ALUM 2200UF 6.3V 20%
                1 565-1651-ND EKZE100ELL332MK25S CAP ALUM 3300UF 10V 20%
                1 565-1694-ND EKZE350ELL471MJ20S CAP ALUM 470UF 35V 20%
                1 565-1579-ND EKY-350ELL681MJ30S CAP ALUM 680UF 35V 20%
                1 493-1548-ND UHE1E101MED CAP ALUM 100UF 25V 20%
                2 493-1496-ND UHE1A102MPD CAP ALUM 1000UF 10V 20%

                Only C60 was bulged. The decapped AcBel board is pictured below. The wiring at the bottom of the image (angles down from left to right) looks like it might have carried a surge. It may be nothing.
                Attached Files
                Uffda

                Comment


                  Re: Suspect Bad PS Apple AcBel API 1PC36

                  p.s.

                  I learned a little more "caps-speak" this a.m. So all you savvy and fluent caps-speakers know I bought UCC (495) series KY or KZE and Nichicon (493) series HE caps.
                  Last edited by uffda_oi; 02-06-2012, 11:55 AM. Reason: removed a return
                  Uffda

                  Comment


                    Re: Suspect Bad PS Apple AcBel API 1PC36

                    I replaced the 12 caps recommended in this thread as follows:

                    c7 (220/35), c8 (47/25), c10 (2200/16), c13 (2700/6.3), c16 and c29 (2200/6.3), c21 (3300/10), c35 (470/35), c41 (680/35), c43 (100/25) and c59-60 (1000/10).

                    The leads to the yellow box connect to the plug posts as do the brown and blue wires. I marked the color code on the components and re connected in the original pattern.

                    The light bulb test on the AcBel psu produced nothing but 4 bright blinks per second. I expected it to go bright, go dim, blink a few times then go out. Confidence is low for testing the PSU in the computer.

                    A view of the resolder job is included (pretty ugly in close up--gonna redux).
                    Attached Files
                    Uffda

                    Comment


                      Re: Suspect Bad PS Apple AcBel API 1PC36

                      What wattage bulb are you using? A 60w won't turn this on. It needs to be large enough to charge the main caps. I start with a 100w. If it blinks as you say, then use 2 in parallel for 200w. You can also use a combination of wattages to step up to it slowly. Blinking is a good thing. It means it is trying to work.

                      Toast
                      Last edited by Toasty; 02-07-2012, 06:39 PM.
                      veritas odium parit

                      Comment


                        Re: Suspect Bad PS Apple AcBel API 1PC36

                        Toasty

                        I used a 100 watt bulb and will start stepping up the wattage (in parallel).

                        Thanks for the suggestion.
                        Uffda

                        Comment


                          Re: Suspect Bad PS Apple AcBel API 1PC36

                          Re: #115 and #116

                          I am pleased to report that my AcBel (in Apple G4 MDD) is now working like a champ, mainly thanks to Toasty's tutoring style and expertise. The search tool is a friend, indeed. So is observation of previous sessions with other folks with similar hardware problems. However, my noobie path was perilous, even ridiculous at times.

                          I assembled a two-bulb parallel circuit to persuade the AcBel to start, forgetting that the PSU itself was one of the parallels in the circuit. I fastened the clips together as I had done to complete the series circuit and was rewarded with a loud pop in my power strip followed by deadness. The pop came from rapid vaporization of about a 1/4" of circuit trace inside the strip.

                          The second dry run of the test circuit succeeded using another power strip. Instead of steady blinking as in the serial circuit, the bulbs shined steady bright except for a barely perceptible blink about three seconds into the test. Since nothing fried, crackled or smoked, I put the PSU in a computer I knew worked (not like the last test).

                          The PSU work fine. Had I done this in the first place, a couple of R&Rs could have been avoided. But, my R&R speed is much better and my recap success rate is now 3:4 PSUs.

                          This experience also gave me a chance to repair a PCB in the power strip, also successful. It is now time to segue to an Apple G4 MDD Samsung thread to find out why PSU #4 is still not working.
                          Uffda

                          Comment


                            Re: Suspect Bad PS Apple AcBel API 1PC36

                            Hi Toasty,

                            considering the same problem as buz in this thread #99
                            (Suspect Bad PS Apple AcBel API 1PC36), followed your tutorial,
                            replaced all the mentioned caps and have a working PSU again :-)
                            But sometimes the PSU won`t start up. It just makes a tickling sound
                            if pluged in.
                            Can you tell me which cap was faulty or replaced at buz`s PSU ?

                            Thanks in advance
                            willy

                            Comment


                              Re: Suspect Bad PS Apple AcBel API 1PC36

                              Nope. Don't remember.

                              Looks like there are only 3 choices anyway - C30, 32, 45.

                              C30 - 0.47@50v
                              C32 - 47@25v
                              C45 - 10@50v

                              Toast
                              veritas odium parit

                              Comment


                                Re: Suspect Bad PS Apple AcBel API 1PC36

                                Hi, Toasty !

                                That is a fast response.
                                I`ll replace the 3 caps and give feedback.

                                Thanks
                                willy

                                Comment

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