Page 11 - Testing Electronic Components

8. Wearing Goggles

The CRT has a complete vacuum inside. It must be handled carefully and
safely. Always wear goggles, to protect the eyes from flying glass, in the
event of an implosion when removing and old tube from the set and
installing a replacement. Do not lift the CRT by the neck, instead hold the
CRT with both hands on the heavy glass front of the tube. Also be sure to
place the CRT facing downwards on a soft surface.

9. Electrostatically Sensitive Devices (ESD)

Integrated circuits (IC) & some field-effect transistors are examples of
ESD devices. These components can be easily damaged by static
electricity. There are several techniques which can reduce the incidence
of component damage, caused by static electricity.

a) Immediately, before handling any ESD devices drain the
electrostatic charge from your body by touching a known earth
ground.
b) Store ESD devices in conductive foam pad until installation in
circuit.
c) Wear a grounding strap, attached to your wrist.
d) Use only a grounded tip soldering iron to solder or desolder ESD
devices. (Some suggest using a battery powered soldering iron
when working on ESD circuits).

10. Fire

Before returning the equipment to the user, every reasonable precaution is
taken to avoid fire hazards. Be sure to use only direct replacements and
not one that defeats some safety measure. For example, the fuses in your
equipment are carefully designed. Fuses must be replaced only with the
same size, type and ratings. Should you install a fuse that is too large than

the original rating, chances are that the equipment will be flammable.

11. Lifting

Some equipment like TV, Hi-fi or Monitor can easily weight around 15 to
30 kilogram. Many problems arise when lifting this equipment from the
floor. Wrong posture when lifting equipment may cause acute back pain.
The right way to lift is keep your back straight and upright, and use your
legs to supply the lifting power.

11