Surface Mount
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Affect Circuit Boards

Most circuit board failures can be attributed to two problems; something that should be conducting is not conducting or something that should not be conducting is conducting. These are referred to as opens and shorts.

When your circuit board will simply "not power up" you should first investigate the power source and verify it is within tolerance. Next look for obvious signs of damage to the board. Component failure may be at fault, but it is hard to determine without the proper diagnostic tools. Also, consider any external inputs required to initialize the board.

Physical damage to a circuit board is an obvious sign of failure. Physical damage can include burnt components, trace damage, cracked board, corrosion, broken terminals, swollen or leaky capacitors, and excessive contamination. Any sign of physical damage on the board needs immediate attention.