As the wheels of the smart TV era roll back and forth, the interfaces on the TV are becoming more and more abundant, and there are 8 kinds of 10 interfaces on the TV. However, these interfaces are not all safe and hot pluggable. If you do not do so, you will have the biggest brick in history! Let us study some scientific attitudes that do not die without death!
First, popular science content
Let's go to science:
1, what is hot swap?
Refers to unplugging or plugging in the interface cable while the TV is on. While the TV is in the sleep state, although it is not in the hot swap, it also needs to be considered. ; X `0 `" W+ i5 V, J5 G
I
2. What problems will be caused by incorrect hot swapping?
Each hot swap is actually a personal character appraisal, especially for non-hot swappable interfaces, which can easily lead to interface damage, device failure, and even brick changes. Even if the interface is hot-swapped, static electricity and frictional static electricity on the human body may cause damage.
3, electrostatic discharge (~' @
4 L' {) [! k4 m' S( f
Electrostatic discharge is a common threat to hot swaps, so come up with it alone. The friction between human clothes and air can cause static electricity, and the operation of electronic devices can also cause static electricity. Most TVs do not use a three-wire plug with a grounding connection, so static electricity poses a greater threat. Fortunately, TV devices all have certain anti-static capabilities.
However, the anti-static ability of TV depends mainly on the manufacturer's performance. In general, reliable domestic manufacturers can probably protect the static electricity of 4000-8000V, and foreign companies can prevent static electricity of 8000V and more than 15000V of key components because they enforce the ESD20.20 standard. Considering that millet has always been reliable in terms of devices, and foundry Wistron is also an international player, we believe that 8000V should be no problem.
Look, in the winter in the north, everyone calls and then touches the video of Xiaomi TV. It will definitely not stand. Therefore, no matter how excellent Xiaomi TV is, everyone in the house with heating in winter must remember to touch the discharge of the iron pipe before playing with the TV!
Second, the millet TV interface hot swap
Millet TV's interface is the following picture (although the power interface is drawn diagonally, but in fact, this post is specifically for Virgo plug-in, so pay attention to the details are q'
w) V) l" S; N) d
Let's analyze it in turn!
1, power plug 5
U C4 k7 [! s9 E
The power plug is strictly not within the scope of the discussion, but considering the fact that a few days ago when a misfortune occurred, the improper switching of the power supply caused the video of the Xiaomi TV to be cold, so come up with it. E
, e7 @ o N4 |
The behavior of plugging in and plugging in the power plug is not universal, but there are many cases in which the switch plug board or the hardware switch at the rear of the switch millet TV is turned on. The behavioral risk factor of the switching power supply is relatively high. Please pay attention to it. We have three situations:
Switching power supply while the TV is running:
Very dangerous, very likely to cause a brick! No explanation!
Switching power supply when TV is on standby (short press remote control)
Dangerous, it may lead to a brick! Do not explain! 3 {0
|! jp: R, }
Turn off the power when the TV is completely off (ie press and hold the remote control for a shutdown prompt)
It is a bit dangerous. Switching the power supply frequently will shorten the life of the TV's power supply module. Considering that domestically produced electrical devices consistently fail to do so, be sure to abandon the practice of old-fashioned TVs and be sure that the TV is completely powered down. The buddy turned off the back of the hardware power switch every time a buddy had been shut down a few days ago, and his TV was hung five days later. Therefore, the trick is: do not ignore the power supply after long-distance remote control shutdown.
2, USB interface 5]! e/ z$ ~( j3 d4 W
USB is an interface specially developed for hot plugging. Therefore, it is only necessary to consider ESD protection.
HDMI is also an interface specially developed for hot plugging. But its situation is more complicated because of its high electrical and structural requirements.
0 n" w% q H0 _ `& @9 L/ h, |8 ~
First, popular science content
Let's go to science:
1, what is hot swap?
Refers to unplugging or plugging in the interface cable while the TV is on. While the TV is in the sleep state, although it is not in the hot swap, it also needs to be considered. ; X `0 `" W+ i5 V, J5 G
I
2. What problems will be caused by incorrect hot swapping?
Each hot swap is actually a personal character appraisal, especially for non-hot swappable interfaces, which can easily lead to interface damage, device failure, and even brick changes. Even if the interface is hot-swapped, static electricity and frictional static electricity on the human body may cause damage.
3, electrostatic discharge (~' @
4 L' {) [! k4 m' S( f
Electrostatic discharge is a common threat to hot swaps, so come up with it alone. The friction between human clothes and air can cause static electricity, and the operation of electronic devices can also cause static electricity. Most TVs do not use a three-wire plug with a grounding connection, so static electricity poses a greater threat. Fortunately, TV devices all have certain anti-static capabilities.
. ' 
However, the anti-static ability of TV depends mainly on the manufacturer's performance. In general, reliable domestic manufacturers can probably protect the static electricity of 4000-8000V, and foreign companies can prevent static electricity of 8000V and more than 15000V of key components because they enforce the ESD20.20 standard. Considering that millet has always been reliable in terms of devices, and foundry Wistron is also an international player, we believe that 8000V should be no problem.
Look, in the winter in the north, everyone calls and then touches the video of Xiaomi TV. It will definitely not stand. Therefore, no matter how excellent Xiaomi TV is, everyone in the house with heating in winter must remember to touch the discharge of the iron pipe before playing with the TV!
Second, the millet TV interface hot swap
Millet TV's interface is the following picture (although the power interface is drawn diagonally, but in fact, this post is specifically for Virgo plug-in, so pay attention to the details are q'
w) V) l" S; N) d
Let's analyze it in turn!
1, power plug 5
U C4 k7 [! s9 E
The power plug is strictly not within the scope of the discussion, but considering the fact that a few days ago when a misfortune occurred, the improper switching of the power supply caused the video of the Xiaomi TV to be cold, so come up with it. E
, e7 @ o N4 |
The behavior of plugging in and plugging in the power plug is not universal, but there are many cases in which the switch plug board or the hardware switch at the rear of the switch millet TV is turned on. The behavioral risk factor of the switching power supply is relatively high. Please pay attention to it. We have three situations:
Switching power supply while the TV is running:
Very dangerous, very likely to cause a brick! No explanation!
Switching power supply when TV is on standby (short press remote control)
Dangerous, it may lead to a brick! Do not explain! 3 {0
|! jp: R, }
Turn off the power when the TV is completely off (ie press and hold the remote control for a shutdown prompt)
It is a bit dangerous. Switching the power supply frequently will shorten the life of the TV's power supply module. Considering that domestically produced electrical devices consistently fail to do so, be sure to abandon the practice of old-fashioned TVs and be sure that the TV is completely powered down. The buddy turned off the back of the hardware power switch every time a buddy had been shut down a few days ago, and his TV was hung five days later. Therefore, the trick is: do not ignore the power supply after long-distance remote control shutdown.
2, USB interface 5]! e/ z$ ~( j3 d4 W
USB is an interface specially developed for hot plugging. Therefore, it is only necessary to consider ESD protection.
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Different long fingers ensure the power and data connection sequence;
3, HDMI interface
HDMI is also an interface specially developed for hot plugging. But its situation is more complicated because of its high electrical and structural requirements.
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7 
X,
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The 19th pin is a hot-swap sensing pin
If everyone implements the standard, there is no problem, but a large number of cottage HDMI cables and cottage players that flood the domestic market are doing very poorly in this area. Just poke about Du Niang to know that hot pluggable cottage HDMI cable under the ps3, xbox abound. There is a word like chanting: The cottage line, dead one, countless weight, self-growth hate water Changdong! & m' s. W. E
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4, VGA interface
The VGA port is also called RGB, D-Sub, D15 port. Friends with old objects at home know it. Although we are hot-plugging many times, it is not designed for hot plugging. 3 W&s% q4 X7 q2 f
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