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Is it dangerous to clean your computer with compressed air or vacuum?

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batteksystem:
I vacuum my computer every year (mainly the CPU fan and the PSU fan) to clean out the dust, never has any problem.

However, the humidity in Hong Kong is quite high, so ESD event is non-common here.

SteveyG:

--- Quote from: blueskull on June 23, 2016, 02:40:36 pm ---ESD is not that dangerous. Most computer parts have built in ESD protection against <=2kV HBM or <=500V MM/CDM ESD.
Even if an ESD event happened with more energy than rated, a chip usually will deteriorate in long term reliability, not drop dead immediately.

--- End quote ---

ESD is extremely dangerous  :palm:. Failure modes can be anything from immediate death to occasionally odd behaviour.
How many times have you had a PC crash? How many times was this due to ESD damage? Was is a software bug or a damaged transistor in an odd memory location that is rarely exercised?

chrism2010:
Another thing to bear in mind when blowing / sucking fans apart from possible damage to the bearings is that the voltage generated by spinning the motor can cause damage on some poorly designed systems.

Zero999:

--- Quote from: chrism2010 on June 27, 2016, 08:20:31 am ---Another thing to bear in mind when blowing / sucking fans apart from possible damage to the bearings is that the voltage generated by spinning the motor can cause damage on some poorly designed systems.

--- End quote ---
Yes, especially when the fan spins much faster than its maximum rated speed. The back EMF can zap the internal inverter and there's always a risk it can damage other nearby components.

spudboy488:
I was told years (and years) ago to not use compressed air to clean something as you do not know where the debris will go. Always use a vacuum as you should be able to corral most of the junk. He told us this after a co-worker destroyed a 8" floppy drive by using compressed air.

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