Sourcing a PC fan ...

[Jethro_uk]

Our lads Acer laptop fan has started buzzing. It's caked in greased fluff and beyond cleaning.

Trying to find a reliable source for all the part numbers scattered all over the fan, the PC and using the PCs model/serial does not provide a definitive part. I've already ordered one which was listed when I searched for all the codes and it was wrong. Trying different numbers eventually led back to the same part, so I'm wary of ordering blind.

Is there a supplier anyone could recommend who knows their stuff and could match to the number on the fan itself ?

It's a Delta Electronics NS85B11 - there's another number on it too:

9924A8R

[The Natural Philosopher]

no, it isn't.

you could probably soak it in isopropyl alcohol and blow dry it

Shame I skipped my two acer laptops.

Laptop model is a more relaible guide

Any of these look OK?

[Harry Bloomfield, Esq.]

on 13/11/2021, Jethro_uk supposed :

It is the identicle to my Acer fan, which I replaced some years ago, which I sourced from Ebay.

It should be possible to clean the fan and CPU heatsink out, if that is all that is wrong with it. It comes from not using it on a flat surface, cut a bit of 6mm ply, to put it on - so it gets a proper/ cleaner airflow.

[Harry Bloomfield, Esq.]

The Natural Philosopher expressed precisely :

This one I think...

[The Natural Philosopher]

[Adrian Caspersz]

You need the service manual for the laptop, for a parts listing.

What model is it? Part number?

Be specific with what's on the back plate (normally that which mentions the PSU voltage and serial number). On the front, Acer (same with other manufacturers) place a "model number" that is a bit more generic covering several SKUs.

[Harry Bloomfield, Esq.]

Adrian Caspersz has brought this to us :

When I had to replace my Acer's fan, I found an 'how to access it' video on Youtube. I suspect this might be the same or a very similar laptop. Make a note of which screw comes from where, some are same thread/different lengths.

[Andrew]

Chop up a disposable facemask and tape part of it over the fan to collect dust and detritus before it gets to the fan blades.

[Jethro_uk]

Thanks both. Looks like I'll have to contact them individually.

I've tried to avoid cleaning as it's fiddly and doesn't seem effective unless you soak the fan - at which point the bearings can be ruined.

[The Natural Philosopher]

No. They are phosphor bronze plain bearings. Ive had a lot of experience on cheap model plane motors. They come apart and clean up well with alcohol, and light oil is then used to soak the bearings. Unfortunately if they have become dry they will almost certainly be run out and wobble even after freeing up.