teclast f7 sizzling

[Chris G]

Yes, I mentioned this in my review as a con, the speakers emit a hissing noise when it’s plugged in at 100% and charging. It’s some type of interference.

Chris | Admin
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[andimu]

I don´t think the noise comes from the speakes. To me the R22 inductors (3 on the board in total) seem to be the problem.

I´m not completely sure but when you google for coil whine, you will find some references to the R22 inductors.

[Chris G]

Okay the speakers are up to the top there also to me it sounds like them, but you are right it could be coil whine. To me it’s very minor, so a minor annoyance. Don’t think we can fix it.

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[sportnok]

Its not the speakers, as has been said its on the main board, I think its 2r2, basically a magnet wrapped with wire that will vibrate given certain circumstances, one suggestion was to put some varnish on the coil to stop movement causing the noise, no idea if you can even get to the coil, but Chris might have an urge to pull things apart :-)..

[Chris G]

A new mod to do, when i had mine open I can’t say I saw this at all.

Chris | Admin
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[sportnok]

Chris G wrote:

A new mod to do, when i had mine open I can’t say I saw this at all.

I guess it would just be some anonymous part you otherwise wouldn’t notice, some have 2r2 wrtten on them, chances are you won’t be able to do anything without damaging something else as they look pretty small, but you never know.

[andimu]

I think the noise comes from one of these parts:

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[Chris G]

Okay, so if I do open it up I will check them see if adding some varnish to them will do the trick!

Chris | Admin
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[Enver Can]

Thanks for the replies,

If it does not problem the notebook in the future, it will not be a problem for me.

[sportnok]

I think the varnish needs to be applied to the coil, but you may well find you won’t be able to get to them as its all concealed, think its a bit of a longshot..

[Chupa]

how about a 1 mm thick spongy silicone pad between the copper and the coils?

easy install, easy remove, should muffle them also transfers heat to the copper

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[Chris G]

Could do it, but got no reason to open my F7, well only to try fix that noise. But to be honest, doesn’t bother me enough to go digging around in there to fix it!

Chris | Admin
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[Chupa]

well an easier way is, go to you local china store and pick up a sizzling pan fridge magnet and put it next to the notebook. problem solved with a smile.

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[Michi]

hello, whats now the best solution for the whining parts?

[Chris G]

None really, well not that I know of.

Chris | Admin
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