How simple to judge whether the chip is oxidized or not?

July 24, 2023

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How simple to judge whether the chip is oxidized or not?


1. Observation method:  to check if there is no burning, foaming, plate surface broken line, socket rust.

 

2. Meter measurement:  +5V, whether GND resistance is too small (below 50Ω).

 

3. Power inspection: For the clear broken board, the voltage can be slightly increased by 0.5-1V, and the IC on the board can be rubbed by hand after starting up to make the chip in question hot, so as to perceive it.