MP 1,1-5,1 DIY fix a1289 Mac Pro 5,1 psu

[zcream]

Hi. My dead psu has been in the repair shop for 3 months. First they could not locate a replacement board, then the shutdown. There is a click once I connect it, so maybe a faulty relay?
Has anyone repaired a Mac Pro psu? Any pointers or guides?

 

[tommy chen]

there are not many people in the world who can repair apple PSUs.
used PSUs are available on the network

 

[newtech1]

For what it costs to get a repair, one could easily find a replacement on eBay. Or with proper knowledge and safety precaution DIY is not out f the question. P/S trouble shooting often is no more than a visual inspection to located a failed component.

 

[zcream]

there are not many people in the world who can repair apple PSUs.
used PSUs are available on the network

I'm not in the usa, so access is a problem.

 

[zcream]

For what it costs to get a repair, one could easily find a replacement on eBay. Or with proper knowledge and safety precaution DIY is not out f the question. P/S trouble shooting often is no more than a visual inspection to located a failed component.

I am willing to try it out. Is it just about opening the psu and looking for blown caps? The previous repair involved changing a board that they made me wait for.

 

[newtech1]

~80% of failures will be evident as a burnt component (capacitor, transistor, volt regulator) sometimes this failure will burn traces on the board making a replacement necessary.

 

[Macschrauber]

Its not only replacing bulged caps. Even as same important: clean the electrolyt what bulged caps spitted out. It is conductive and eats traces and other components.