I ran my heavily featured Foxconn P9657AB-8EKRS2H for several years with a Cedar Mill SK9KE Pentium® 4 651 2M Cache, 3.40 GHz, 800 MHz FSB that I upgraded 19 months ago with an eBay SL9ZF Conroe Core™2 Duo E6700 4M Cache, 2.66 GHz, 1066 MHz FSB. I don't remember what PSU I started out with, but when it was young I bought my first ever ATX Antecs, EA-380 and EA-430D models. Later I tried what I expected to be an EA-500 that turned out to be EA-500D. After several swaps with Newegg it gave me my money back, and I left the EA-430D in the P9657AB.
One AM last month at about 04:00 I was awakened to the beeps of 7 UPSs. After determining that the P9657AB's UPS battery wouldn't likely survive the outage, I shut it down. Since then, until today, I've never been able to get it to run more than 10 minutes or so before freezing, except if all it was doing was running memtest86+, which it would do for at least 6 hours without errors no matter what RAM I tried.
Soon after realizing something had gone wrong, what seemed to be on account of the forced shutdown, I opened up the EA-430D to find two slightly swollen OSTs, 3300uf/16v & 1000uf/16v. I replaced them with what I had on hand, Nichicon UVZ1C332MHD and United Chemi-Con ELXZ160ELL102MJ20S. No improvement. I tried a couple of other power supplies, including an EVGA 100-W1-0430-KR for $35 with $10 rebate available that I had received only about a week earlier, but still no improvement.
I also tried via BIOS raising various voltages without apparent effect. As I've had several disruptive experiences with LGA775 cooler attachments, during cap replacement I purposely left the Freezer Pro7 cooler installed. Only when done soldering while in the process of cleaning residual flux, the white component of two of the plastic cooler retention feet completely failed. I was able to replace them by conscription from an OEM Intel cooler. The failure made me wonder if either or the pair had partially failed much sooner, leaving the contact reasonable on the other side, allowing overheat on the failed side, with whatever mechanism senses and warns of CPU overheat being fooled into satisfactory status, and overheat being the actual culprit for the lockups.
I eventually gave up doing anything more without some Googling first. About the P9657AB I found nothing except problems with POSTing, nothing about locking up. About Earthwatts I didn't even think to look. Eventually I did some more reading here and found the big red warning about KZG. Since the P9657AB had four as shown in that post's photo, I replaced them all with Nichicon, 3 UHM1C152MPD purchased 2008/07, 1 UHV1C152MPD just received. No improvement.
Today I finally got around to trying the P9657AB's original Cedar Mill. It ran fine for over 7 hours, 4 hours of memtest, over an hour of just running top, later running zypper dup of openSUSE 13.2 to give it a bit of an I/O workout for half an hour or so. After rebooting the new kernel it ran top for over an hour before I shut it down.
As the Cedar Mill and the Conroe use different FSB, 800 vs. 1066, I proceeded to swap a Conroe from another system into the P9657AB and try the apparently damaged Conroe in that other system to confirm it's the Conroe that's failed and not the P9657AB. First try was another 965 system (Dell GX745), with another Conroe, a 20% slower E6400. Both systems behaved nicely for over an hour with the swapped CPUs. I then swapped them back. The Dell @2.13GHz is behaving normally. The P9657AB @2.67GHz again locked up, this time after 14 minutes of running top, plus whatever makes up the sleeping 134 tasks idling openSUSE 13.2. I have another P965 system with another E6700 I will try swapping with after getting some sleep.
I can't make out what most remaining caps are on the EA-430D without removing them. One for sure is a 220uf/16v OST. Another of yet another spec I can't read without removing it may also be OST, but none exhibit any apparent leaks or swelling. Should I replace all but the giant anyway before returning it to duty?
Any comments about the UHM1C152MPD mixed with UHV1C152MPD replacing the KZGs? The P9657AB has about 20 OK looking 1000uf/6.3v green Lelons. The only large electrolytics the board has besides those I replaced are a pair of Rubycon MCZ 3300uf/6.3v with no evidence of leaking or swelling. Any chance they might no longer be up to task with the faster of the two Conroes after having been subjected to the bad OSTs in the EA-430D?
Other comments about any of this situation?
One AM last month at about 04:00 I was awakened to the beeps of 7 UPSs. After determining that the P9657AB's UPS battery wouldn't likely survive the outage, I shut it down. Since then, until today, I've never been able to get it to run more than 10 minutes or so before freezing, except if all it was doing was running memtest86+, which it would do for at least 6 hours without errors no matter what RAM I tried.
Soon after realizing something had gone wrong, what seemed to be on account of the forced shutdown, I opened up the EA-430D to find two slightly swollen OSTs, 3300uf/16v & 1000uf/16v. I replaced them with what I had on hand, Nichicon UVZ1C332MHD and United Chemi-Con ELXZ160ELL102MJ20S. No improvement. I tried a couple of other power supplies, including an EVGA 100-W1-0430-KR for $35 with $10 rebate available that I had received only about a week earlier, but still no improvement.
I also tried via BIOS raising various voltages without apparent effect. As I've had several disruptive experiences with LGA775 cooler attachments, during cap replacement I purposely left the Freezer Pro7 cooler installed. Only when done soldering while in the process of cleaning residual flux, the white component of two of the plastic cooler retention feet completely failed. I was able to replace them by conscription from an OEM Intel cooler. The failure made me wonder if either or the pair had partially failed much sooner, leaving the contact reasonable on the other side, allowing overheat on the failed side, with whatever mechanism senses and warns of CPU overheat being fooled into satisfactory status, and overheat being the actual culprit for the lockups.
I eventually gave up doing anything more without some Googling first. About the P9657AB I found nothing except problems with POSTing, nothing about locking up. About Earthwatts I didn't even think to look. Eventually I did some more reading here and found the big red warning about KZG. Since the P9657AB had four as shown in that post's photo, I replaced them all with Nichicon, 3 UHM1C152MPD purchased 2008/07, 1 UHV1C152MPD just received. No improvement.
Today I finally got around to trying the P9657AB's original Cedar Mill. It ran fine for over 7 hours, 4 hours of memtest, over an hour of just running top, later running zypper dup of openSUSE 13.2 to give it a bit of an I/O workout for half an hour or so. After rebooting the new kernel it ran top for over an hour before I shut it down.
As the Cedar Mill and the Conroe use different FSB, 800 vs. 1066, I proceeded to swap a Conroe from another system into the P9657AB and try the apparently damaged Conroe in that other system to confirm it's the Conroe that's failed and not the P9657AB. First try was another 965 system (Dell GX745), with another Conroe, a 20% slower E6400. Both systems behaved nicely for over an hour with the swapped CPUs. I then swapped them back. The Dell @2.13GHz is behaving normally. The P9657AB @2.67GHz again locked up, this time after 14 minutes of running top, plus whatever makes up the sleeping 134 tasks idling openSUSE 13.2. I have another P965 system with another E6700 I will try swapping with after getting some sleep.
I can't make out what most remaining caps are on the EA-430D without removing them. One for sure is a 220uf/16v OST. Another of yet another spec I can't read without removing it may also be OST, but none exhibit any apparent leaks or swelling. Should I replace all but the giant anyway before returning it to duty?
Any comments about the UHM1C152MPD mixed with UHV1C152MPD replacing the KZGs? The P9657AB has about 20 OK looking 1000uf/6.3v green Lelons. The only large electrolytics the board has besides those I replaced are a pair of Rubycon MCZ 3300uf/6.3v with no evidence of leaking or swelling. Any chance they might no longer be up to task with the faster of the two Conroes after having been subjected to the bad OSTs in the EA-430D?
Other comments about any of this situation?
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