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Author Topic: If electricity in my home goes of does it harm my miner?  (Read 201 times)
endi17
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March 18, 2018, 02:13:40 AM
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Hello,
I have just purchased an avalon miner and its my first miner. I have a question,these miners stay at work 24/7 right? But in my city sometimes the lights( electricity) go off. Does this thing harms my miner?
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March 18, 2018, 04:59:13 AM
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Hello,
I have just purchased an avalon miner and its my first miner. I have a question,these miners stay at work 24/7 right? But in my city sometimes the lights( electricity) go off. Does this thing harms my miner?

It certainly isn’t good for it, but I don’t think it will break the miner. If you’re overly concerned you could get a Tesla Powerwall or a DIY battery solution.

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March 18, 2018, 06:22:41 AM
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Add a surge device and you should be fine.  Biggest issue is thermal expansion and cooldown - that is why classic light bulbs almost always burn out when you turn them on.

But from a practical perspective, other than surges, it shouldn't harm them.  I wouldn't recommend power cycling them a dozen times a day, but once or twice should not unduly affect them.

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March 18, 2018, 11:37:26 PM
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I haven't had a power outage since I started mining; but as long as It's just a loss of power there should be no problem. That's no different than turning off the power supply.

If you are home when it happens I would unplug it as a precaution for when power is restored to make sure the grid is stable to avoid a bunch of on/off cycles.

Surge protectors are a nice safety net in unstable grids as well, I use a whole home protector at my panel just for peace of mind


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March 19, 2018, 02:58:09 PM
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Power surge in a large amount and instantaneously will potentially damage the devices. And would be more dangerous, when your electricity goes off and back on in a short time. It will cause a more significant power surge and also the electric current would 'invades' in into your device.
A classic example of an emotion creating a conclusion.  Anyone can learn from numbers.

Power cycling is a standard voltage (ie 120 VAC) dropping to zero and then slowly climbing back towards the standard voltage again.   A surge is a voltage that well exceeds that standard voltage.

Anyone can read numbers on surge protectors.  A 120 volt protector has a 330 volt let-through voltage.  That means it does absolutely nothing until a surge exists - well over 330 volts on a 120 volt service.

When power cycles, voltage does not even exceed 120 volts during restoration.  Only reason that power restoration creates well over 330 volts - one make conclusions from emotions.  One has violated even even what was taught in junior high science.  One made conclusion only from wild speculation.  And then posted those speculations as if fact.

Blackout and brownouts do not harm electronics.  Only brownouts are potentially harmful ... to motorized appliances ... not electronics.
endi17
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March 19, 2018, 04:35:15 PM
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Thank you all for your answers! One more question please, i have 3 avalon741. As you know they dont have a power button. If i want to turn them off which is the best way tp do it? Should i turn of first the power supply?
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March 19, 2018, 05:10:00 PM
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Just power down the power supply, either via switch or unplugging it.

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March 19, 2018, 08:25:11 PM
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If i want to turn them off which is the best way tp do it? Should i turn of first the power supply?
It does not matter to electronic hardware if power off is from a front panel button, yanking its power cord, tripped off by a circuit breaker, or a nuclear power plant crashes.  To hardware, that power off is same.
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March 19, 2018, 09:22:14 PM
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It does not matter to electronic hardware if power off is from a front panel button, yanking its power cord, tripped off by a circuit breaker, or a nuclear power plant crashes.  To hardware, that power off is same.


Except for methods that cause surges...  Letting the power supply drain down is a decent way to prevent that.

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March 20, 2018, 01:53:41 AM
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Thank you all for your answers! One more question please, i have 3 avalon741. As you know they dont have a power button. If i want to turn them off which is the best way tp do it? Should i turn of first the power supply?

Look at it this way your PSU is your on/off button for the Avalons, in the same way you could push the power button on your PC. There is no shutdown feature to idle in the way you would choose shutdown for your PC. Again this is a feeling I remember having myself when the first time I wanted to shut things down, you eventually get past the small hurdles.

Good luck.



(Moderator's note: This post was edited by frodocooper to remove an off-topic portion of the post.)

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March 20, 2018, 04:48:50 PM
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Except for methods that cause surges... 
How does power off or on cause a surge?  That belief comes from many who only believe a first thing told.  Knowledge means ignoring every recommendation that does not also say why - with numbers.

Power loss does not cause a surge and does not damage any properly designed appliance.  Numbers, previously posted, demonstrate why.

UPS is only temporary and 'dirty' power so that unsaved data can be saved.  And so that reboots (due to short power offs) might be avoided.  Nothing more.

Hardware protection from other potentially destructive anomalies require completely different solutions.
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March 21, 2018, 11:26:20 PM
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Thank you all for your answers! One more question please, i have 3 avalon741. As you know they dont have a power button. If i want to turn them off which is the best way tp do it? Should i turn of first the power supply?

Look at it this way your PSU is your on/off button for the Avalons, in the same way you could push the power button on your PC. There is no shutdown feature to idle in the way you would choose shutdown for your PC. Again this is a feeling I remember having myself when the first time I wanted to shut things down, you eventually get past the small hurdles.

Good luck.



(Moderator's note: This post was edited by frodocooper to remove an off-topic portion of the post.)

Dont know a about avalons but I shut down my s9s and m3s trough ssh, command poweroff. Leave them to cool down and then unplug psu.
ccgllc
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March 21, 2018, 11:29:21 PM
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Dont know a about avalons but I shut down my s9s and m3s trough ssh, command poweroff. Leave them to cool down and then unplug psu.

And THAT has got to be the absolute safest way!

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Vene
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March 22, 2018, 06:43:21 AM
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Dont know a about avalons but I shut down my s9s and m3s trough ssh, command poweroff. Leave them to cool down and then unplug psu.

And THAT has got to be the absolute safest way!

Well I suppose it is. I just dont feel comfortable unpluging something that drains 2.2kw (like M3) without proper shutdown. Not to mention sparkling effect that is sometimes seen in the socket. Also this way chips can properly cool down, if you just unplug them while they are at 85 degrees whole miner gets damn hot.
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March 30, 2018, 06:44:38 AM
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Dont know a about avalons but I shut down my s9s and m3s trough ssh, command poweroff. Leave them to cool down and then unplug psu.

And THAT has got to be the absolute safest way!

Well I suppose it is. I just dont feel comfortable unpluging something that drains 2.2kw (like M3) without proper shutdown. Not to mention sparkling effect that is sometimes seen in the socket. Also this way chips can properly cool down, if you just unplug them while they are at 85 degrees whole miner gets damn hot.

I agree with Vene that a proper shutdown like he does is the best way.
If i,m powering down i pull the network cable first on my avalons and let the miners go to idle before unplugging the PSU but would be interested in a shutdown command for them.

Makes perfect sense to NOT let your miners get overheated every time you power off.
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