Page 153 - Testing Electronic Components
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The microprocessor pins that hold the crystal oscillator are usually called
                   OSC IN and OSC OUT and the frequency is marked on the crystal. The
                   location of the crystals was labelled as XTAL or X. Some examples of
                   crystal oscillator frequency are 4 mega hertz, 8 MHz, 16 MHz and so on.














                   I’ve experienced quite a number of Computer Monitor crystal
                   breakdowns causing the On Screen Display (OSD) to disappear from the
                   screen. Some On Screen Display even missing half of the display and
                   also erratic. Replacing only the crystal solve the OSD problem in
                   Monitor. A loosen crystal connection in Computer Motherboard could
                   cause the system to ‘hang’ after running for sometime.









































                   Crystals are quite fragile components because of their construction and
                   designed. Unlike a resistor or a capacitor, if you drop one on the ground
                   from a decent height, it’s a 50-50 chances whether it will function again.





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