How simple to judge whether the chip is oxidized or not?
July 24, 2023
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.