Are the electromagnetic fields and waves generated by a large 29" CRT TV (turn ON) and Desk Fan (turn ON) at a distance of 2cm from a 2.5" HDD (turn ON) sufficient to penetrate the HDD and cause interference in the arm and head movements, as well as read and write errors? i has old 2010 and new hdds 2.5"
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Hey there, @nortman88312746, and welcome to the forum. Glad to have you here.
Realistically no, EMF fields need to be very strong to cause read and write errors. You’d be more likely to have issues caused by high heat or vibrations from the fan than any EMF caused degradation.
But I am curious what you mean by ‘within 2cm’ because there are lots of magnetic parts in a CRT.
Hi Jane
The most potent thing you will get from a CRT besides a pretty good bite from the tube EHT would be X-rays from the front of the tube. Even then there is not much of that as the face of the tube could be about 35mm thick. There was some concern about radiation from the fluorescent screen but it was found this to be about the same as from a luminous watch dial.
There would be some magnetic radiation from the deflection coils but that is pretty much confined to the immediate proximity. This does not affect all the other electronic bits inside the cabinet so I would think that was pretty harmless.
Incidentally theEarth’s magnetic field has an influence on the scanning beam Unless the tube is well screened (steel screening) when you move the TV or whatever around a room. Not noticeable but measurable.
Cheers Bob
