PrescottDan
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When you resolder a multi layer PCB board it can cause more problems
Because an older multi layer PCB can have cold solder joints in the layers or fracture solder in the layers, so you have to reflow the solder again to fix it
How can you reflow the solder again? without cause more problems
When using a DVM meter in Continuity to check the Continuity of each layer to input and output test points or pins, it will check or BEEP. But when you apply or inject a logic signal to test and check each layers input and output test point it's flaky or distortion. Why doesn't the continuity checker work but when injecting a signal it's different?
Because an older multi layer PCB can have cold solder joints in the layers or fracture solder in the layers, so you have to reflow the solder again to fix it
How can you reflow the solder again? without cause more problems
When using a DVM meter in Continuity to check the Continuity of each layer to input and output test points or pins, it will check or BEEP. But when you apply or inject a logic signal to test and check each layers input and output test point it's flaky or distortion. Why doesn't the continuity checker work but when injecting a signal it's different?