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Old April 23rd 21, 10:39 PM posted to alt.comp.hardware.pc-homebuilt
Bob F
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Posts: 153
Default Dust warning for telecommunication companies

On 4/22/2021 2:07 PM, Paul wrote:
skybuck2000 wrote:
Hello my dear telecommunication companies ! =D

It is only fair that I give you a warning about your bussinessszzzz !

Because of the Corona Crisis more people work at home !

This will lead to a higher production of DUST.

Depending on where the cable modem is placed this could SUCK dust into
CABLE MODEMS. (See * Little Add-on below)

Lately these CABLE MODEMS have ventilators in them.

I HAVE NO EXPERIENCE with such cable modems (For now I do not wish to
have one of these !) BUT I DO have experience with other devices with
VENTILATORS in them.

For example: A Toshiba laptop WILL have to be cleaned every 2 months,
to prevent overheating and/or performance issues.

PCs will have to be cleaned at least 1 or 2 a year to prevent noises
which can irritate people.

There could even be a risk of catching fire or overheating or breaking
of motherboards/PCBs.

I have notified ZIGGO employees of my concerns in the past concerning
this VENTILATOR-IN-CABLE-MODEM design. I have done so TODAY again.

Though I feel the women on the other side didn't take it very
seriously. She was very nice and helped me to get a new remote control
for my TV, which probably was killed by STATIC ELECTRICITY from my
couch. It could have also been broken by falling down, but I don't
believe so.

Anyway... I told her, next year I want to buy a new computer.
I tell you now it will probably a threadripper with 64 cores, DDR5 pci
express 4.0 but preferably 5.0 so that it is very ready for the future
and then I would like to upgrade to a better modem. To connect
multiple computers to it.

For now internet connecting sharing of windows will do for just 2
computers.

But in the future it might be 3 and I would also like to not depend on
additional computers for this functionality but ok.

Anyway back to the CABLE MODEM ISSUE:

Now the women on the phone said, all ZIGGO cable modems have
ventilators for proper cooling + nowadays modems do not become as hot
any more.

Also these modems have tiny little air holes in them.

I thought and said maybe these ventilators only spin up when needed to
cool the cable modem but she didn't know.

I also told her, it might be necessary to open up such a cable modem
for proper cleaning and I don't know if it is possible to do so. It
might be necessary to break them open and that would be a bad idea !

This may or may not become an issue now and in the future, the corona
crisis is not over and seems to continue for a while, leading me to
predict possibly more cable modem failures ! And thus increased costs
for telecommunication companies !

Also as speeds are increases these cable modems may become hotter in
the future.

Also maybe planet earth will warm up a little bit.

Let's look at possible solutions for the near futu

1. Demand and Design cable modems without ventilators. THIS WOULD BE
BEST.
2. Demand and Design cable modems which can be "serviced", opened for
dust cleaning.
3. Perhaps but a large box over the cable modem ? Though the cables
will get in the way, perhaps poke some holes in the box. Perhaps there
will be enough air in the box for circulation, perhaps some of the
heat can be transferred through the material of the box to the outside
"world" of the box. Which material would be best and cheap ?
It is good to be prepared for these kinds of situations, more heat,
more dust, changing conditions.

Either that or telco companies will face more hardware failures and
increased cost of operation !

Futhermore IPv6 multicast seems to be available, but this would
require the cable modem to be placed into bridge mode. I don't know
why that would be necessary and I don't know anything further about
this, but it's an interesting tip.

I hope ubee and other cable modem companies will design CABLE MODEMS
without ventilators, there should be at least 1 such design. Or make
them easy to open at the very least !

I also asked if ZIGGO's recent internet speed increase will cause the
modem adapter to fail again because of low copper ammount in adapter,
but they were unsure, if it does happen they might replace my cable
modem entirely ?!?

* Little Add-on:

1. Some customers have the cable modem is a special closest.
2. Some customers have the cable modem in their basement.
3. Some customers have the cable modem in their living room ! (ME !)

I am pretty sure 3 is worst case scenerio and the cable modem will be
exposed to HUGE/LARGE quantities of DUST !!!!!

(This does not yet include multiple people or animals, in such cases
the dust could be even worse !)

Bye for now,
Â* Skybuck.


I place a freestanding 80mm fan next to two of my
networking boxes, and that assists the convection
cooling you describe. The fan has a number of steel washers
fastened to it, to increase the mass along the bottom
edge and make it stand up better. It has never fallen over.

The fan runs off a 12V wall adapter as a power source.

Yes, there'd dust.

Since I own *all* the network boxes (they look like ISP
boxes but they're mine and I pay no rent), I've even opened
them up for cleaning and inspection. Some of them, the rubber
feet come out, and the screw is underneath the rubber foot
on the four corners.

Â* Paul


Most of my PC's have a 120mm fan at the back of 3 open 5 1/4" drive bays
sucking air into he case through an open cell foam filter. I remove and
vacuum the filter every couple months. I also have a manual speed
control on the fan to slow it for noise limitation, adjusting the speed
to make sure that air is being blown out all other openings of the case.

This virtually eliminates the need to clean the inside of the case and
heatsinks. People could build a box with similar filtration for other
gear like network boxes.