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 |
Buy and sell Bitcoin, Ethereum, NoOnes and other cryptocurrencies Peer-to-Peer on NoOnes. Secure, fast, and user-friendly transactions on a trusted platform.
Empower Your Crypto Journey
with Tangem Wallet
A hyper-efficient decentralized crypto marketplace built on Sui. Turbos finance Trade Trade any crypto on Sui. Best prices are offered through aggregating liquidity.
A hyper-efficient decentralized crypto marketplace built on Sui. Turbos finance Trade Trade any crypto on Sui. Best prices are offered through aggregating liquidity.
BPI Net Empresas é o serviço do Banco BPI que permite gerir as contas e realizar operações bancárias online, com segurança e comodidade. Saiba mais sobre as vantagens, as operações Bpi Net Empresas
From caramel to crumble to cider and cake, the possibilities are all scrumptious.
Balances Active Orders Withdraw Deposit TradeOgre Logout · Sign In. Search: Currency, Market, Change, Price
Balances Active Orders Withdraw Deposit TradeOgre Logout · Sign In. Search: Currency, Market, Change, Price
A hyper-efficient decentralized crypto marketplace built on Sui. Turbos finance Sui Trade Trade any crypto on Sui. Best prices are offered through aggregating liquidity.
SecuX hardware wallets prote SecuX wallet cts your private key in a Secure Element chip, support
A hyper-efficient decentralized crypto marketplace built on Sui. Turbos finance Trade Trade any crypto on Sui. Best prices are offered through aggregating liquidity.
Loved the insight in this post. It’s very comprehensive and full of helpful information. Great work!