Endocardial Mapping Instrument Display Circuit Board Restoration
Endocardial Mapping Instrument Display Circuit Board Restoration can start from inspection over the electronic components: First of all, check the start-up of the crystal, especially the faulty circuit board in a vibrating working environment, which can easily cause the crystal pins to loosen with the inside, causing the crystal to malfunction. After confirming that the…
Repair Intracardiac Hexagram Mainboard by IC Online Tester
Repair Intracardiac Hexagram Mainboard by IC Online Tester can improve maintenance efficiency since it has a learning function, an offline test function, an LSI (large-scale integrated circuit) inspection and analysis function, and a VI (volt-ampere characteristic) curve analysis function. Test and compare the logic function of the integrated circuit chip through a large number of…
Electronic PCB Card Damaged Components Reworking
The general law of Electronic PCB Card Damaged Components Reworking (this can greatly improve the repair speed), the probability of electronic PCB card component damage in turn is: electrolytic capacitors, power modules, high-power transistors, zener diodes, resistors less than 100Ω, resistances greater than 100kΩ , relay, small ceramic capacitors. Circuit characteristics for repairing damaged capacitors…
Operational Amplifier PCB Board Repairing
Operational Amplifier PCB Board Repairing can be categoried as below steps:1st of all, judging the quality of op amps is quite difficult for quite a few electronic maintainers. Ideal op amps have “virtual short” and “virtual break” characteristics. These two characteristics are very useful for analyzing operational amplifier circuits that are used linearly. To ensure…
Failed Electronic Circuit Card Maintenance Order
Engineer needs to pay attention to Failed Electronic Circuit Card Maintenance Order to find the shortest path to solve the problem, avoid random dismantling or desoldering which will cause the unsuccessful of motherboard maintenance and the failure will expand to more blocks or positions; Control board reworking is like a doctor seeing a doctor, but…
Restore Broken Printed Circuit Board Without Schematic Diagram
When Restore Broken Printed Circuit Board Without Schematic Diagram, most of engineers will feel it is very difficult and have no idea where to start, below we would like to introduce several methods which can help you effectively conquer this obstacles and find the most efficient way to do it: Be “chattered”To thoroughly understand the…
Malfunctional Canon SCH/EL PCB Board Troubleshooting
Malfunctional Canon SCH/EL PCB Board Troubleshooting can take advantage of analog signal analysis method, and there are several main points need to take into account for the process: (1) Accumulate and improve VI curve library. The VI curves of various circuit board nodes that may be tested in the future are collected into a VI…
Faulty Controller Circuit Card Refurbishing by Analog Signal Analysis
As we all know, Faulty Controller Circuit Card Refurbishing by Analog Signal Analysis can be applied on the pcb board repairing, different components have different characteristics and have different VI curves; at the same time, when a component fails, its VI curve will also change, and the nodes on the circuit board are composed of…