Apple electronic repairs · Professional diagnostics
If your Mac overheats, the fans run constantly, performance drops or it shuts down unexpectedly, there may be an issue with the cooling system, thermal sensors, power supply or the logic board.
At Daniel Gontán we inspect MacBook Pro, MacBook Air, iMac, Mac mini and other Apple devices with a technical diagnosis before replacing parts. The aim is to find the real fault and assess whether the repair is worth it.
Temperature, ventilation and electronics
A Mac can heat up temporarily when you edit video, do design work, have many tabs open, export files or run heavy processes. The problem arises when the overheating is constant, occurs during simple tasks, or is accompanied by slowness, noise, shutdowns or charging faults.
In many cases the cause is dust build-up, degraded thermal paste, worn fans or sensors not measuring correctly. But there can also be more serious faults in the logic board, power rails or components causing excessive power draw.
That's why you shouldn't limit yourself to cleaning the device without checking the root cause. A professional diagnosis lets you distinguish between maintenance, fan replacement, thermal servicing or electronic repairs.
Affected models
It's normal for a MacBook Pro to reach high temperatures during demanding tasks, but if it heats up while browsing, typing or at idle, there may be a problem with ventilation, thermal paste, sensors or the logic board.
We also investigate faults related to USB-C charging, battery, abnormal power draw and sudden drops in performance.
The MacBook Air has less thermal headroom than other models. If the temperature rises consistently, we check the fan, heatsink, battery, thermal management and the device's internal condition.
A timely check can prevent shutdowns, slow performance and damage caused by excess heat.
In iMac and Mac mini models, internal dust, thermal sensors and ventilation are key. If the unit is noisy, gets hot at the back or loses performance, it's advisable to have it checked before bigger faults appear.
We diagnose both cooling issues and electronic faults that cause excessive power consumption.
Common faults
If the fans don't stop even when you're not running heavy applications, there may be internal dirt, a faulty thermal sensor or an incorrect temperature reading.
When the system detects excessive heat, it throttles the processor to protect itself. This causes slowness, freezes and loss of performance.
A Mac that shuts down by itself may be protecting itself from a dangerous temperature or may have a power, battery, sensor or logic board fault.
Over time, thermal paste loses effectiveness and the processor doesn't transfer heat well to the heatsink. This can significantly raise temperatures.
Accumulated dust prevents proper airflow. In Apple laptops and desktops this can cause noise, heat and premature wear.
Not all overheating is solved by cleaning. Sometimes there are electronic components drawing abnormal current, affected power rails or damaged sensors.
If the Mac shuts down, fails to boot or malfunctions after heating up, it's advisable to assess the condition of the storage and the possibility of data recovery before handling it.
Before replacing parts
If your Mac is overheating, the most important thing is not to assume the problem is always the fan or thermal paste. There are symptoms that indicate a deeper fault may be present.
It's worth checking the device when heat appears at idle, when the fans ramp up for no reason, when the Mac shuts down, when the battery drains quickly or when performance drops sharply.
At Daniel Gontán we provide an honest assessment: if maintenance is enough, we'll explain it; if an electronic area needs repair, we'll diagnose it; and if it's not worth it, we'll say so before you spend money.
Working method
We check when it heats up — whether at idle, under load, on battery, with specific apps or after a previous repair.
We analyse fans, heat dissipation, thermal paste, internal dirt, thermal sensors and the device's real behaviour.
If the problem isn't only thermal, we inspect the logic board, power rails, power draw, battery, charging and any affected components.
We explain what's happening, what the options are, whether repair is worthwhile and what risks exist for the device or your data.
Individuals, freelancers and businesses
A Mac that overheats is not just inconvenient: it can affect your work, your files and the device's lifespan. We serve individuals, freelancers and businesses who need to know if their Mac can continue operating safely.
We also inspect cases where the device has already been opened, suffered liquid damage, shuts down while editing, doesn't charge correctly or has lost performance after an update or a previous repair.
It's not about swapping parts just to try fixes. It's about locating the real cause of the overheating and deciding whether the repair is sensible, viable and cost-effective.
If the Mac also fails to boot or contains important data, we assess data recovery before any delicate intervention.
Indicative price
The price depends on the origin of the problem. An internal clean and thermal renewal doesn't cost the same as replacing a fan, repairing sensors, checking the battery or working on the logic board.
That's why we work with a prior diagnosis. First the cause of the overheating is identified and then we explain the estimate before repairing. This way you avoid changing unnecessary parts or investing in a repair that isn't cost-effective.
Frequently asked questions
Yes, a Mac can get hot during demanding tasks such as video editing, design, gaming or file exports. It is not normal for it to get excessively hot at idle, when browsing or doing simple tasks.
It may be due to demanding processes, internal dust, degraded thermal paste, worn fans, faulty sensors, a failing battery or logic board faults.
The MacBook Air has a thinner design and less thermal margin. If it gets very hot with basic tasks, it's worth checking ventilation, the heatsink, battery and thermal management.
There may be dust build-up, an actual high temperature or a sensor providing incorrect readings. There may also be abnormal power draw on the logic board.
It is not advisable. If the device shuts down by itself, it may be protecting itself from excessive temperature or an internal fault. Forcing it can worsen the damage.
Not always. It can help if the problem is dust or thermal paste, but if sensors, fans, battery or the logic board are affected, a deeper diagnosis will be required.
Heat, shutdowns and logic board faults can affect the device's operation. If the Mac won't boot or contains important information, it's worth considering data recovery before handling it.
Yes. We inspect MacBook Pro, MacBook Air, iMac, Mac mini and other Apple devices with temperature issues, noise, shutdowns, low performance or related faults.
Related links
If, in addition to overheating, your Mac won't power on, doesn't charge or fails intermittently, we investigate the root cause before replacing parts.
If the overheating began after exposure to moisture, coffee, water or a spill, there may be corrosion or internal electronic damage.
If the device shuts down, won't boot or you have important files, it's worth assessing the data before any complex repair.
Professional diagnosis
Tell us which model you have, when it overheats and what symptoms you notice. We'll review the case and advise the best way to assess the repair.
