iMac Power Supply Voltage Bad Psu Dallas Texas


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IMac Power Supply Voltage Issue

If you are experiencing issues with your imac not turning on or suddenly shutting down, it could be due to a faulty power supply unit (PSU). One of the common symptoms of a bad PSU is voltage problems. The power supply is responsible for providing the correct voltage to all the components in the imac, and if it is malfunctioning, it can cause various issues such as system crashes, freezes, and hardware failure.

Symptoms of a bad power supply unit (PSU) in imac

IMac does not turn on or power up.
IMac shuts down unexpectedly.
System freezes or crashes frequently.
Fans run at high speed and produce a loud noise.
Burning smell coming from the imac.
Components in the imac are not functioning properly.
Errors related to power supply voltage in the system log.

Causes of bad power supply unit (PSU) in imac

Overheating: Overheating can cause the power supply to fail and stop functioning correctly.
Dust and debris: Dust and debris can accumulate inside the imac and clog up the fans and components, leading to overheating and PSU failure.
Power surges: Power surges can damage the power supply unit and other components in the imac.
Age: The power supply unit may fail due to wear and tear over time.

What to do if you suspect a bad power supply unit (PSU) in imac?

If you suspect that your imac has a faulty power supply unit, it is best to seek the help of a professional repair technician. Attempting to repair or replace the power supply unit yourself can be dangerous and can cause further damage to your imac. Look for a reputable computer repair store or IT service provider near your location, preferably one that specializes in Mac devices. Make sure to read reviews and check their warranty policies before choosing a service provider. You can also ask for recommendations from friends or family who may have had similar experiences.

At the repair store, the technician will diagnose the issue with the power supply unit and replace it if necessary. They may also perform additional checks to ensure that the imac is functioning correctly and that all the components are receiving the correct voltage.


If you are experiencing issues with your imac, especially with the power supply voltage, it is crucial to address the issue promptly to avoid further damage to your device. Seek the help of a professional repair technician and get your imac back to optimal performance.

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