| Joined: | Sun Apr 1st, 2012 |
| Location: | South Lakeland, UK |
| Posts: | 4066 |
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I was using it for processing music, I played reel to reel tapes into the computer using Felt Tip Studio software. Have used it many times before, never an issue. The computer stops responding, the clock stops then about 30 seconds later it shuts down. This can be in any application, even in the finder, working or idle, sometimes unattended.
I am suspecting the power supply unit (PSU), maybe a dodgy capacitor. I have done some diagnostics which *seem* to be indicating power supply.
Taking a step back, I recently (in terms of use, actually in July), upgraded the video card (GPU) to an ATI? msi R9 280X. I understand this card is recommended for the MacPro5.1, certainly 'flashed' for Mac, but it maxes the current available from the PSU, perhaps causing the PSU to stress to overload? The 280X card is 'metal compatible' enabling the MacPro 5.1 to run Mojave and makes the graphics processor available to PhotoShop and Lightroom, this has a big effect on the speed of rendering of the large image files from the D800. I have not used the MacPro much since I got the iMac in July, because I have not taken any photographs. I use the iMac for research and internet browsing etc. I only start up the MacPro for heavy duty stuff, like music and photo processing. Some users run an additional PSU purely for the GPU, I haven't seen that method used for this particular card but certainly have for larger/faster GPU cards.
Currently the MacPro is almost completely stripped down, with only logic board and PSU remaining in the case. I have tried all the usuals, replaced the Pram battery, switched the RAM around and removed all drives etc. so far nothing has fixed it, it might run for ten seconds or ten hours but eventually it freezes then shuts down. I have examined the logs and the only thing I get is an uncompleted link, which I assume means unable to continue due to freeze. No mention of panic mode.
I am thinking a PSU is my first move because the CPU's and RAM appear to pass diagnostics tests. The diagnostic procedure is convoluted and I need to check that I am doing it right, it's in 'Apple Tech' language, not particularly easy to follow!
So currently my need is to get the electric flowing, rather than economise on it's use.
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Robert.