The examination method of open a way of FPC open circuit is shared
- source:TAMIKO CNC Machining
Observe the line that gives an issue with microscope above all, find first doubtful the positional marked that rupture. 2.
If microscope also cannot find the position that assumes He Ke doubt to rupture, also can distribute line into a few paragraphs small. 3.
The position that ruptures possibly in circuit two end, or the position that is section, take care with bit soft board outer protect film (Cover Film) rift, had better take new art design knife or it is burin, put bit outer layer to protect on film or so shift to blow except layer to protect film next (Cover Film) , make its show the Copper Foil line next. Can take so 3 will measure circuit with ammeter. Eliminate the position that likelihood happening ruptures stage by stage according to foreword next, can find the rupture place with Copper Foil exact circuitry finally. 4.
If fear this method may be right circuitry of strand Copper Foil, also can try to dissection the position that there is Copper Foil by Copper Foil circuitry, try to tear apart next come off outer protect film (Cover Film) , achieve identical goal. (this method need is exceedingly attentive with deft, believe capable PCBA engineer should be OK do get just be been opposite) once find exact Copper Foil circuitry to rupture the position, the phenomenon that if still cannot observe,ruptures, what try to curve this position below microscope is soft board, such OK dash forward show and enlarge ruptures the mouth of Copper Foil. 5.
Once find exact Copper Foil line,rupture the position, the phenomenon that if still cannot observe,ruptures, what try to curve this position below microscope is soft board, such OK dash forward show and enlarge ruptures the mouth of Copper Foil. CNC Milling CNC Machining