So when I did my recent upgrade I noticed that the underside of the Mega ST4's
RF shield had black dust on it. It was not there the last time I had it apart for
cleaning about 6 months ago.
It is on the part of the RF shield that sits directly over the P/S. The Mega seems
to be working fine and the fan is running so I'm not sure what to make of this.
I visually inspected the P/S and didn't see anything blown.
Should I be worried?
Black dust....
Black dust....
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- stephen_usher
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Re: Black dust....
That'll just be atmospheric carbon dust from diesel vehicles accumulating over the top of a hot component carried there by convection. That's normal in any equipment with a cover over a hot component with natural ariflow through it.
Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
Re: Black dust....
As said above. Pollution. I see it around carpets, sockets on walls etc. And to think we breathing in all that crap as well.
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viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
Re: Black dust....
Fascinating. What's the mechanism by which it's deposited, do you know? Sudden change in convection direction?stephen_usher wrote: ↑Wed May 19, 2021 9:47 am That'll just be atmospheric carbon dust from diesel vehicles accumulating over the top of a hot component carried there by convection. That's normal in any equipment with a cover over a hot component with natural ariflow through it.
BW
DFB1 Open source 50MHz 030 and TT-RAM accelerator for the Falcon
DSTB1 Open source 16Mhz 68k and AltRAM accelerator for the ST
Smalliermouse ST-optimised USB mouse adapter based on SmallyMouse2
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DSTB1 Open source 16Mhz 68k and AltRAM accelerator for the ST
Smalliermouse ST-optimised USB mouse adapter based on SmallyMouse2
FrontBench The Frontier: Elite 2 intro as a benchmark
- stephen_usher
- Posts: 5668
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Re: Black dust....
Not sure, possibly static charge.
Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
Re: Black dust....
Well, thanks guys.
I find the part about diesels interesting. I live about 4-5 miles outside of a city
with a population of around 4500-4800 or so. Can't remember the last time I
saw an actual diesel within miles of me. Do see them on the 4-lane highways
but that's literally miles away.
So does this stuff carry that far? Ugh.
I find the part about diesels interesting. I live about 4-5 miles outside of a city
with a population of around 4500-4800 or so. Can't remember the last time I
saw an actual diesel within miles of me. Do see them on the 4-lane highways
but that's literally miles away.
So does this stuff carry that far? Ugh.
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Re: Black dust....
Diesel exhaust loves to fertilize allergies and moss on things down wind
Tom
Tom
Re: Black dust....
I understand....still, I live in the hills of Appalachia (Eastern Kentucky, to be exact).
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Re: Black dust....
I would say most likely not unless diesel dust loves Mega’s. Now if you have black else where then maybe but with your local I’d say very unlikely especially if the Mega is the only place it showed up. . The Atari supplies run so hot it could be some out gassing from components on the supply.
Re: Black dust....
Fans with sleeve bearings (instead of ball races) will grind themselves to bits over time creating fine dust. So could be fan guts.