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Chapter 6: Troubleshooting
The Radiation Alert® Frisker is a highly reliable instrument. If it does not seem to be working properly, look
through the following chart to see if you can identify the problem.
Problem
Display works, but no counts
are registered
Reading is high, but another
instrument has a normal read-
ing in the same location
Instrument has false high
reading
Instrument has false high
reading
Display is blank
Possible Cause
defective Geiger tube
possible contamination
moisture
photosensitivity
continuous discharge
electromagnetic field
no battery, dead battery, poor
battery connection, defective
LCD
Action
Look through the window to check the
mica surface of the tube; if it is wrin-
kled or a break is visible, replace it
Scan the Frisker with another
instrument.
The circuit board may be wet. Dry the
instrument in a warm dry place; if it
still has a problem, it requires service
Remove from direct sunlight and
ultraviolet sources. If the high count
drops, the mica window coating may
have washed off the Geiger tube due
to getting wet. The tube will need to be
replaced
Replace the Geiger tube
Move the instrument away from pos-
sible sources of electromagnetic or
radio frequency radiation.
install a new AA Baterries If count light
and audio work, the LCD may need to
be replaced.
9
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