Well, i see a lot of people who complains about random freezes, reboots, nand corruptions (they makes our devices don't boot and need reflash again), etc..
I had those stability issues when i bought my minipc, i was frustrated with it, thinking to send back it to the seller. No way to make my device runs stable until i made some test to the stock power supply who comes with my stick (mk808b). I connected an ampere meter to it and found that its marked like 2A power supply but maximum that it gives was 1,2A under load, I tested some other power supplies, and saw how optimistic are some manufacturers about their power supplies. They said that can give an amount of amperes, and under hight load they works only giving the half they announce.
I bought a new quality power supply (Psvita one) that only announce 1,5A, and i found all stability problems goes away. No freezes, no reboots, it works stable like a rock. While the stock power suply can give only 1,2A with heat on it, the new one gives me 1,8A and works cool.
Feed the stick with the tv usb output is not a good idea, cause it is not designed to give so much power out, and in some case it could work, but not allways.
Not only the Amperes what the PSU can give is the problem, bad quality PSU afect with electricals noise our tv sticks.
And pls, all who don't have stability issues post your power supplies name, and how it works.
Mine: PSVITA power supply. http://www.amazon.com/gp/aw/d/B006JK...m_ps2?pi=SX125
Attached to it: External usb hd, wireless keyboard and mouse and ipazzport 3D fly air mouse.
Sorry about my English, and if you want to ask anything, i will try to answer it if I can.
NOTE: The psvita power supply need to be modded to connect standard usb ports in it, is very easy. Only break some plastics sheets in the usb output.
From here:
A very good explication of I said.
Great potential source of electromagnetic and electronic disturbance= Noise that Bob anounces.
I had those stability issues when i bought my minipc, i was frustrated with it, thinking to send back it to the seller. No way to make my device runs stable until i made some test to the stock power supply who comes with my stick (mk808b). I connected an ampere meter to it and found that its marked like 2A power supply but maximum that it gives was 1,2A under load, I tested some other power supplies, and saw how optimistic are some manufacturers about their power supplies. They said that can give an amount of amperes, and under hight load they works only giving the half they announce.
I bought a new quality power supply (Psvita one) that only announce 1,5A, and i found all stability problems goes away. No freezes, no reboots, it works stable like a rock. While the stock power suply can give only 1,2A with heat on it, the new one gives me 1,8A and works cool.
Feed the stick with the tv usb output is not a good idea, cause it is not designed to give so much power out, and in some case it could work, but not allways.
Not only the Amperes what the PSU can give is the problem, bad quality PSU afect with electricals noise our tv sticks.
| summary: |
| PLS, IF YOU HAVE STABILITY ISSUES, TRY A QUALITY POWER SUPPLY BEFORE COMPLAINS ABOUT ROM STABILITY OR DEFECTIVE DEVICES. |
And pls, all who don't have stability issues post your power supplies name, and how it works.
Mine: PSVITA power supply. http://www.amazon.com/gp/aw/d/B006JK...m_ps2?pi=SX125
Attached to it: External usb hd, wireless keyboard and mouse and ipazzport 3D fly air mouse.
Sorry about my English, and if you want to ask anything, i will try to answer it if I can.
NOTE: The psvita power supply need to be modded to connect standard usb ports in it, is very easy. Only break some plastics sheets in the usb output.
From here:
A very good explication of I said.
Originally posted by frog2001
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Hello!
After reading here for some time, i thougt i´m able to clear some things up about the power problems with cheap powersupplies. I will try not to be to technical.
In the old days about 5 to 10 years ago, a powersupply for wallplugs was an big, black havy brick with a lot of copper and other meaner things in it. Quality was easily checked. If it was heavy it was good
, if not it was crap.
Today it is not as easy as in the past.
After the mass appearence of the so called SMPS all changed. SMPS stand for "Switch Mode Power Supply".
The "new" kind of Powersupply has changed a lot of things.
1. It is much more efficent as the old transformator powersupplies.
2. Less powerconsumption if not used, but plugged in.
3. Today it is much cheaper to build.
4. Easy mass production
but on the other side there are
1. Very optimistic data about the usable power
2. Great potential source of electromagnetic and electronic disturbance
Ok, so why all the blah,blah.
If you have an 5 Volt 1 Ampere powersupply, you can thrust the 5 Volt. But don´t thrust about the current. If you drain more than 0.8 Ampere out of it the trouble normally starts. Because of being pushed to the limits, the normally clean and stable 5 Volt are being messed up with so called spikes.
Extremly short impulses that can mess up digital signals like the ones used in the MK8..
This can cause freezes, strange behavior, or even prevent system startup.
So it is better to use an powersupply that offers a much greater usable current.
But there is another problem with this powersupply. They are extremly poorly shielded from sending out electromagnetic waves. So if they are used in the upper limits of their usable current, they can start to mess up with the W-LAN. So if you have W-LAN issues and there are powersupplies nearby (less than an meter or so) try to get them away. You can be surprised about the results. This also counts for the W-LAN router/AP.
If you have any questions about this special theme, feel free to post your question.
If you can explain it better feel also free to post it
frog2001
After reading here for some time, i thougt i´m able to clear some things up about the power problems with cheap powersupplies. I will try not to be to technical.
In the old days about 5 to 10 years ago, a powersupply for wallplugs was an big, black havy brick with a lot of copper and other meaner things in it. Quality was easily checked. If it was heavy it was good
, if not it was crap.Today it is not as easy as in the past.
After the mass appearence of the so called SMPS all changed. SMPS stand for "Switch Mode Power Supply".
The "new" kind of Powersupply has changed a lot of things.
1. It is much more efficent as the old transformator powersupplies.
2. Less powerconsumption if not used, but plugged in.
3. Today it is much cheaper to build.
4. Easy mass production
but on the other side there are
1. Very optimistic data about the usable power
2. Great potential source of electromagnetic and electronic disturbance
Ok, so why all the blah,blah.
If you have an 5 Volt 1 Ampere powersupply, you can thrust the 5 Volt. But don´t thrust about the current. If you drain more than 0.8 Ampere out of it the trouble normally starts. Because of being pushed to the limits, the normally clean and stable 5 Volt are being messed up with so called spikes.
Extremly short impulses that can mess up digital signals like the ones used in the MK8..
This can cause freezes, strange behavior, or even prevent system startup.
So it is better to use an powersupply that offers a much greater usable current.
But there is another problem with this powersupply. They are extremly poorly shielded from sending out electromagnetic waves. So if they are used in the upper limits of their usable current, they can start to mess up with the W-LAN. So if you have W-LAN issues and there are powersupplies nearby (less than an meter or so) try to get them away. You can be surprised about the results. This also counts for the W-LAN router/AP.
If you have any questions about this special theme, feel free to post your question.
If you can explain it better feel also free to post it
frog2001
5A wow.
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