Siemens Touchscreen TP1200 Display Black Dot Original Screen Repair

Siemens Touchscreen TP1200 Display Black Dot Original Screen RepairThere is a black dot display on the internal screen of the Siemens touch screen, a malfunction of the Siemens TP1200 splash screen, the TP1200 card logo does not move, the Siemens TP900 cannot enter the system after restarting back and forth, the Siemens TP700 power on display screen does not move, the MP277 splash screen is repaired, the Siemens MP377 white screen is faulty, the Siemens PCU50 crashes for maintenance, and when encountering errors, it needs to be shut down and restarted. The startup interface does not move, the touch screen communication is broken, and the touch is offset,

1、 Hardware malfunction

Physical damage to LCD screen

The collision or compression of the screen may cause damage to the internal LCD material, resulting in black spots or black spots. The LCD screen needs to be replaced to solve the problem

Circuit issues

Internal circuit short circuit, display chip failure, or power components (such as chips, capacitors, diodes) burning out may cause display abnormalities, and damaged parts need to be inspected and replaced

Screen aging

Long term high temperature or humid environments can accelerate screen aging, leading to the appearance of black spots. It is necessary to improve the usage environment or replace the screen

2、 Software or configuration issues

Driver conflict

Outdated or incompatible drivers may cause display abnormalities. It is recommended to update or reinstall the drivers

Calibration error

The failure of touch screen calibration may indirectly lead to black dot problems, and it needs to be recalibrated

3、 External factors

Screen pollution

Dust or stains may form visual black spots, and the screen surface needs to be cleaned

Connection issues

Loose or damaged cables may affect the display and require inspection and reconnection

4、 Repair suggestions

Preliminary investigation: Restart the device, clean the screen, and check the connection cables

Professional testing: If the black spot persists, it is recommended to contact Siemens or an authorized repair center and use professional equipment to test hardware such as backlight boards and motherboards

If the problem involves complex hardware faults (such as BGA chip virtual soldering), it needs to be operated by technical personnel

OP7、OP17、OP27、OP177B、OP270、OP170B、OP277、OP77、OP37、TP27、TP7、TP178、TP177B、TP177、TP170 、TP270、TP277、TP37、MP277、MP370、MP270、MP270B、MP377，OP27、OP177B、OP270、OP170B、OP277、OP37、TP27、TP178、TP177、TP170 、TP270、TP277、TP37、MP277、MP370、MP270、MP377、TP700，KP700，TP900，KP900，TP1200，KP1200，TP1500，KP1500，TP1900，KP1900，TP2200，KP2200， Staying at the SIMATIC HMI interface, the motherboard is broken and causing problems. The Siemens TP1200 often restarts on its own, the TP700 black screen is repaired, the Siemens TP1200 touch screen crashes after being powered on for a period of time, the Siemens exquisite touch screen card screen does not enter the system, the Siemens KP900 system crashes, the touch screen KP1200 displays the startup screen, the TP900 Comfort displays the Siemens screen image, the display screen TP1200 image is not fixed for repair, the black screen KP1200 is repaired, the TP1200 Siemens exquisite screen is repaired, the KP700 does not enter the system, the TP1200 firmware cannot be updated, the TP1500 exquisite panel touch fails, the power on black screen, flower screen, blue screen, white screen, the startup displays a white bar or the manufacturer's SIEMENS logo, and the Siemens cannot work normally due to continuous restarts and crashes. TP1200 cannot update the OS.Siemens Touchscreen TP1200 Display Black Dot Original Screen Repair