I´m working with the computer now for one year since the replacement and it started again. I took my computer to another repair center and they replace the PSU. After almost 6 months i was able to convince Apple that my computer was out of guarantee because of the time it was in repair center. crazy!!! but the repair center wouldn't make the repair again because it was out of guarantee (6 months in the repair center.!! time goes by.in Europe we have 2 years). So, they replaced the PSU.and it was ok, for 15 days.
My computer was at repair center almost 6 months !!!! For them, the computer was alright until i was lucky to show them that the computer was not ok. Sometimes i couldn't startup the computer for hours, or days. The computer presented also the same sympthon as Hitcher. This symptom increased until i couldn't start the computer any more. MacPro 2008 with 4 Gbytes and 2 harddrives.Īfter one year of use i started having problems like you, randomly when i pressed the power button: lights on, chime and nothing.no apple logo. I had the same problem as you and i´m having it again. What the is going on? My machine is a 2007 model / 4 gig ram. I have unplugged all peripherals and tried booting, but nothing! I can see nothing on my screens at all! I get random chimes when I hit the power button, sometimes once, sometimes 4.
2008 MAC PRO 3 1 INSTALL
I found that if I turned the mains power off for 20 seconds or so, and removed and replaced all usb and firewire leads, when I hit the boot / power button all external drives would once again appear on the desktop.Ĭurrently my problem is, I went to boot up this morning, now I have the start up light, a chime then nothing! I've tried a safe boot several times and also an install disc boot by holding down the "C" key on the keyboard, the disc seems to be spinning, then nothing. I've had a random problem that when I boot up the mac pro won't recognise external drives. I had to have the graphics card replaced 3 months ago. I had the power supply replaced 5 months ago. Has anyone had boot up dramas and your mac pro chimes 4 times in a row? waste 1 hour and $60 to bring your mac to life again, you can takeit to apple support they dont get with failure and take your money, here in my countre apple service take from me a video card replacement hd 2900, they say they replaced psu to, i spend more than $600 for nothing, google you will see tons of people having the same problem, and buying on ebay a used PSU it wont work they all have se same problem in short time you will get failure again, is a PSU problem. serach for j1, j2, j3, c pinout take 3 cheap atx psu thats it, J3 goes for hd, pci 6 pin, j2 goes for cpus, j1 goes for pcie, C goes standby power and memory. Hi There every body, mine from 2011 was dead, some weekends, try to rapair for this time, until i decide to put 3 ATX PSU 20amp in 12v Rail each, one for J1 conector, one for J2 conector and one for J3 Conector the c conecctor use 5vsb 3.3 vsb and PSU-ON and Ground, this mac pros drawn to much current thats the only way to do it satable 3 x 20amp atx PSU, the only thing you miss is the sleep fuction, but you get you $2000 machine back to life, people goes crazy buying used motherboard, Used PSU that have the same problem as original.
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