PCB board repair refers to the bringing the physical damage which has been done to a PCB-namely pad or trace lifting, laminate repair, eyelet replacement to name a few-back to a point to where the printed circuit board can function based on the original design requirements. Printed circuit board repair skills and processes require lots of patience and a high degree of hand-eye coordination.
Siemens Hemodialysis Electronic PCB Board Reworking can be seen that the appearance of each component is normal, and the resistance of each component is measured in turn. The forward resistance of LED1 is about 30KJ, the forward resistance of D34-36 is about 6Kft, the forward and reverse resistances of voltage regulators Z14, Z16 and triode…
Rework Integrated Chip on the Broken GENERAL Computer Tomography needs to desolder and replace the chip prone to failure, it can be replaced with a chip socket, which is convenient for future chip replacement or elimination test of unstable chip failure. Some chips are inexplicably damaged, mostly due to electrostatic discharge. The general chip antistatic…
Commonly Seen Faulty Issue in Troubleshooting Computer Tomography PCB Board include Migratory or unstable faults are mostly caused by poor device performance, poor temperature characteristics, and poor contact of device pins. For devices suspected of degraded performance, use a memory oscilloscope to carefully observe and compare the changes in the logic waveform. Whether the waveform…
Maintain Medtronic Computer Tomography Motherboard Functional failures are mostly caused by chip damage. The interface part of the general circuit board is most vulnerable to the impact of harmful pulses of the power grid, lightning, and industrial spark pulses. The online tester can be used to easily test the interface circuit chip and determine the…
Repair Non-Functional Computer Tomography Circuit Board will take a lot of trouble to further find the specific faulty chip on the device. The failure phenomena on the circuit board are ever-changing and different, but they can be summarized as follows: the performance of integrated circuits; resistance-capacitance components deteriorates, the unstable performance, and the function fails;…
Siemens Computer Tomography Controller Card Chip Level Repairing is a deep-level maintenance, which has certain difficulties, and its high technical content requires certain conditions. The maintenance instruments should be compatible with the current development level of Siemens Computer Tomography equipment. The methods of using multimeters, ordinary oscilloscopes, and off-line device testing in the past have…
Hereby we would like to introduce some experience when Troubleshoot Automatic Bacteria Identification Device Power Supply PCB Card: The staff of the laboratory of our hospital used the automatic bacteria identification instrument more often in the analysis of pathogenic bacteria in the hospital and the drug sensitivity test. Our hospital uses the bio-Mellie automatic bacteria…
Rework Power Supply Circuit Board Protection Circuit can also be an effective way to repair medical equipment pcb board repairing; There is also a part of the circuit block in the power supply circuit board that is mainly used to protect the entire circuit system, called the protection circuit, usually composed of spark gap, varistor…
Restore Switch Excitation Circuit in Power Supply PCB Card can greatly increase the efficiency of medical instrument PCB board troubleshooting; The switch tube, the positive feedback loop and the switching transformer can form a self-excited switch. This switching power supply is prone to malfunction in the capacitance and resistance existing on the positive feedback loop…
Starter Circuitry Restoration in Medical Electronic Equipment Card power supply system is also very important, in addition to the conventional switching function, the switching tube usually also plays the core role of the switching power supply gap oscillator. Such a switching power supply is called a self-excited switching power supply. Self-excited switching power supply is…