Hello all, I have been a lurker on this forum for quite some time. And yes, now I need the advice/suggestions/recommendations of the wise sages on the forum. Here are the details. In 2009, I purchased new, a MP 4.1 (A1289. EMC# 2314), 4-core 2.93GHz Xeon processor. Over the years, this little beast has served me very, very well. Over the years, I just used the machine, and increased the RAM to 16GB x 3. In 2017, I updated the video card, to a "flashed Radeon, can't recall the model, but the MP worked even better. Well, in 2018, I thought that the MP4.1 was getting a little long in the tooth, and went about upgrading the CPU. I have some CPU swapping experience from my old MSDOS IBM PC 80286 and math coprocessors days, and have done several CPU upgrades over the years with Windows machines. Anyway I digress, I upgraded my MP4.1 from the OEM Xeon (Nehalem) 2.93GHz W3540, to a Xeon (Westmere) 3.2GHz W3670. Everything went well, going from a 4-core to a 6-core machine. Around that time, I also did the 5.1 Firmware upgrade....all was well with my MP 4.1 (nee 5.1), even was working fine on the old Mac Pro. I believe that I even installed ElCapitan, with good results. Shortly thereafter, a "buddy" of mine (and I use that term very loosely) ran across an Intel Xeon (Gulftown) 3.46GHz W3690 6-core CPU that he couldn't use, and make me a deal for it. I installed it in my Mac, and the machine wouldn't even POST...dead !!! Frustrated with this turn of events and my "buddy," I have let my MP5.1 languish now for about a year. I have been using my traveling buddy, my MBP9.2 in the interim.
Well, recently I decided to resurrect the old MP5.1, I dusted it out, took out the W3690 CPU and reinstalled the W3670 CPU. It was the W3670 that was the last operational CPU that I, now in hindsight, should kept my fat fingers off of and be satisfied. I powered it up today, and still a dead machine. no POST. However, all of the fans work. When I click on the front panel switch, I noticed a single red LED flash once on the the processor tray circuit board located on the left corner (facing me) of the CPU heatsink assembly, the MB printing nearby is DST510. As a result of a Google search for possible reasons/solutions, I removed the processor tray, removed the heat sink assembly, examined the Arctic Silver that I had just applied the day before. I had applied a bit too much, cleaned the CPU and copper heat sink edges. I also removed the processor tray bracket from the circuit board to carefully examine the two Northbridge heat sink spring retainers, they were in good shape, not broken. Put everything back together again, plugged it in, hit the switch....same as before, no POST, all of the fans work.
Any ideas/suggestions/recommendations from the experts on this forum? Other than a couple of good dope-slaps up the side of my head? I am at wits end and am contemplating taking in to a shop, pay The Man for my foolishness...Thanks for reading my tale of woe, and also for any assistance you can render.
Well, recently I decided to resurrect the old MP5.1, I dusted it out, took out the W3690 CPU and reinstalled the W3670 CPU. It was the W3670 that was the last operational CPU that I, now in hindsight, should kept my fat fingers off of and be satisfied. I powered it up today, and still a dead machine. no POST. However, all of the fans work. When I click on the front panel switch, I noticed a single red LED flash once on the the processor tray circuit board located on the left corner (facing me) of the CPU heatsink assembly, the MB printing nearby is DST510. As a result of a Google search for possible reasons/solutions, I removed the processor tray, removed the heat sink assembly, examined the Arctic Silver that I had just applied the day before. I had applied a bit too much, cleaned the CPU and copper heat sink edges. I also removed the processor tray bracket from the circuit board to carefully examine the two Northbridge heat sink spring retainers, they were in good shape, not broken. Put everything back together again, plugged it in, hit the switch....same as before, no POST, all of the fans work.
Any ideas/suggestions/recommendations from the experts on this forum? Other than a couple of good dope-slaps up the side of my head? I am at wits end and am contemplating taking in to a shop, pay The Man for my foolishness...Thanks for reading my tale of woe, and also for any assistance you can render.
