Imac 27" 2011 POwer supply

Eleways

Senior Member

Join Date: Oct 2014

Posts: 62

Country: Italy
#1

Imac 27" 2011 POwer supply

10-06-2018, 04:06 AM

Hi

I've got a lot of power supply for Imac 27" model 614-0446 (or PA-211-02a), that don't work.
No component blow, fuse good, 390V on primary caps.
I've check no short on secondary, i've tried to change all capacitors on primary and secondary without success.

I suppose a serial problem on these power supply, more than 10 pcs with same problem.

Anyone can help me on this? Many thanks!

Luke
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Andrew F. Ali

Badcaps Legend

Join Date: Jan 2014

Posts: 2450

Country: Trinidad & Tobago
#2

10-06-2018, 06:14 AM

Re: Imac 27" 2011 POwer supply

Most likely the PWM/SMPS IC and/or the Transformer start up circuit has some open resistors

Last edited by Andrew F. Ali; 10-06-2018, 06:16 AM.
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Imac 27" 2011 POwer supply

Imac 27" 2011 POwer supply

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