Logic board failures can be difficult to pinpoint because a Mac’s logic board connects many of its components, frequently including the processor, RAM, ROM, hard drive, fans, expansion slots, and ports. When troubleshooting a bad logic board, it is important to test any and all suspect components in the process. This will help you confirm that it is indeed the logic board and not any of its associated components.
Mac fails to power-on or complete its boot sequence, the logic board could be at fault.
Corrupted graphics or intermittent display failures can signal a failed or failing logic board. These issues can affect onboard screens or external monitors, particularly when concerning Macbooks or other portable Macs.
Unexplained sounds, including clicking, grinding, and variable fan noise when the computer is not being heavily used may also be symptomatic of a failing Mac logic board. It is crucial, however, to note that these sounds can also herald imminent hardware failure. If you are experiencing these types of noises, you should back up important information immediately and expedite your troubleshooting schedule.
A Mac bad logic board could manifest itself in system crashes, whether in specific applications or in the Mac OS itself. These crashes or kernel panics could be repetitive or seemingly random. We service all Apple computer devices, Macbook Pro, Macbook Air, Powerbook, iMack, Mac Pro, Power Mac, and Mac Mini. We have FREE Pick-Up and Delivery in Miami.
Typical Inverter Failure Symptoms:
What is a Inverter?
Inverter failure symptoms are very similar to backlight lamp failure symptoms and in most cases you cannot tell which one is causing the problem until you replace either the inverter board or the backlight lamp. From my personal experience, inverter boards fail more often than backlight lamps. If you have to guess, replace the inverter first.
Common problems that affect a LCD monitor include:
Some of the most common problems that affect a LCD monitor can be pin-pointed to the backlight, inverter or capacitor. When your LCD monitor goes dark, the reason is usually a backlight bulb which needs to be replaced.