First, Google found and watching this you get to about 9:30 before the fan removal starts, by which time virtually everything else has already been removed.
AFAICS there is no immediately obvious way to get at the fan apart from completely stripping the laptop, which does have a very high risk factor.
So are there alternative strategies to clean a laptop fan without disassembly?
I have a couple of days before my son sets off for Australia with it, so if I break anything I will almost certainly not have the time to fix it.
Get a very powerful air-in-a-can (the ones with metal "straws" work well (I use Kenair Air Duster). Blast it in every cavity, and primarily the air vents.
You will surprised what comes out! Best to do this outside...
Before you do anything that may turn the fan blades at any great speed, such as applying a vacuum cleaner or air jet, make sure the blades can't move, or you may well blow the control circuitry, even on brushless fans.
It can, but not for very long - WD40 is a cleaner, not a lubricant. It might work for a bit, *if* you can get the spray into the business end of the fan - and that's usually very well hidden from the surface grills.
It's not *very* likely to do any harm, but it's possible the solvents could interfere with plastics (case and ribbons and PCBs) as well as risk to screen coatings.
Generally the trick to refettle fans is a drop of 3-in-1 or similar to the spindle, but that might necessitate some or all of the disassembly that you don't fancy. In the case of a fan that's gone properly off balance and destroyed its bearing, no oil will do much anyway.
Is it definitely not something flapping in the blades?
Spraying WD40 round your laptop is asking for trouble. I suppose you could argue that once you've stripped the laptop down and got at the fan you could lubricate the bearings only but they are supposed to be sealed for life and replacement of the fan is the only way to be sure of a long-lived repair.
The fan speed is automatically regulated to get the required cooling. If the ventilation ducts are clogged with dust the laptop will increase the fan speed, and hence noise, to compensate. So the first step is to get rid of the dust then check to see if the fan speed and noise return to normal.
As well as the video you found it's also worth having the Dell service manual, e.g. from
formatting link
or follow the support links around Dell's website for a UK-specific manual.
(I thought the video author was going to take a club hammer to his laptop until he switched it on and revealed it to be an electric screwdriver. :-)
The fan is close to the edge of the case on this model. If you can block the fan rotation by sticking something through the ventilation grilles you may be able to blow/suck the dust out without having to strip down the laptop.
HomeOwnersHub website is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.