西门子触摸屏电路基础
西门子触摸屏黑屏不加电
西门子触摸屏黑屏维修Smart1000iev3，用灯光照也没有任何图像。
打开后发现这个降压芯片已经损坏了。
在显微镜下可以看到明显烧坏的痕迹。
一般是由于TL431损坏，导至各路输出电压均不正常。
更换降压芯片和TL431后各路电压也就都正常了。
西门子触摸屏上电黑屏
24V转5V的电路出问题，首要检查降压块。
再者就是光耦和电源芯片要做为检测对象。
西门子触摸屏上电黑屏
不加电一般是电源管理芯片出问题了。
常用的芯片引脚及功能定义表
| 序号 | 丝印 | 型号 | 引脚定义 | 备注 |
|---|---|---|---|---|
| 1 | 40210 | TPS40210 |  |
电压的 4.5V 至 52V 宽输入范围电流模式升压控制器 |
| 2 | Y13 | BZX84C36LT1G |  |
250毫瓦；齐纳二极管稳压器，36V SOT23 |
| 3 | 9AB | BC856BMTF |  |
双极晶体管 PNP 65V 100mA SOT23 |
| 4 | 1Bt或3Bt | BC846BW |  |
NPN三极管 SOT23 |
| 5 | Z7 | BZX84C8V2 |  |
8.2V贴片稳压二极管 SOT23 |
| 6 | AF3 | SN74AHC1G14DCKR |  |
具有施密特触发输入的单路 2V 至 5.5V 反相器 |
| 7 | ABAA | MAX809M |  |
复位电路 SOT23 |
| 8 | 1A 1B 1C | BC846A BC846B BC846C |  |
NPN, 65V, 0.1A, SOT23 |
| 9 | B1C | MBRS1100T3G |  |
100V 1A肖特基二极管 |
| 10 | TL431I | TL431IDR |  |
可调精密并联稳压器芯片 |
| 11 | 217A | IL217AT |  |
贴片光耦 |
| 12 | 19N10L | 19N10L | N沟 MOS场效应管 | |
| 13 | 10P6F6 | 10P6F6 | P沟道 10A 60V MOS场效应管 | |
| 14 | VP1176 | SN65HVD1176DR |  |
PROFIBUS RS-485 收发器 |
| 15 | L1117 | L1117 |  |
液晶屏贴片稳压管 |
| 16 | QVB | TLV62065 |  |
开关稳压器芯片 |
| 17 | G5N | SGM61030 |  |
电源管理芯片 |
| 18 | G101STN01.0 | S513 |  |
10.1寸液晶屏 |
Thank you very much for your post! I am very interested in your points.
최고의 카지노 사이트을 찾고 계신다면, 저희가 엄선한 최고의 온라인 카지노를 소개해드리겠습니다. 에볼루션 카지노에서 안전하고 게임 경험을 만나보세요.
Very good post. I will be facing some of these issues as well..
I could not refrain from commenting. Very well written.
May I simply say what a comfort to discover somebody that really knows what they’re talking about online. You definitely know how to bring a problem to light and make it important. More people need to check this out and understand this side of the story. I was surprised you aren’t more popular because you definitely have the gift.
It’s hard to find educated people for this subject, however, you seem like you know what you’re talking about! Thanks
After I initially left a comment I appear to have clicked the -Notify me when new comments are added- checkbox and from now on every time a comment is added I receive 4 emails with the same comment. Perhaps there is a way you can remove me from that service? Kudos.
Saved as a favorite, I love your web site!
This diamond,” wrote the British Colonial Secretary on the time, “is the rock upon which the future success of South Africa will likely be constructed.
Hi there! Do you know if they make any plugins to assist with Search Engine Optimization?
I’m trying to get my website to rank for some targeted
keywords but I’m not seeing very good gains. If you know of any please share.
Many thanks! You can read similar blog here: [Bij nl](https://www.ecobij.nl/ “Bij nl”)