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Apple MC561LL-A Power Supply
Purchasing a new Apple MC561LL-A power supply is quite simple as long as you have the old one to make a size comparison to. It is always a good idea to replace a PSU with the same size or bigger. The PSU, or power supply, is responsible for powering the computer. It is a pretty straighforward job to install a power supply in the MC561LL-A desktop. Never go too cheap on a PSU as it is the final barrier between the power coming from your wall and delicate components inside your Apple.
Simple indications of an unhealthy main power source
- Computer will not turn on
- System shuts down while processing a taxing load
- You smell burnt wires in the power supply
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