Pinhole In Semiconductor
Certain semiconductors like diodes, IC’s and Transistors can be tested good but it will fail when under load. Upon careful inspection, sometimes you could see very tiny pinhole at the outer layer of the component. In the future if you suspect that a section have problem and you can’t locate the faulty components, you may have to directly replace the components and retest. You may also have the choice to see the semiconductor with a magnifying glass first before replacing it.