Page
29
IN
CASE
OF
DIFFICUL
TV
This section
of
the Manual
is
divided
into
two
parts. The
first
part,
titled
"General Troubleshooting
Information:'
describes
what
to
do
about
the
difficulties
that
may occur
right
aher
your
Tester
is
assembled.
The second part,
titled
"Troubleshooting
Chart."
is
provided
to
assist
you
in
servicing the Tester
if
the "General
Troubleshooting
Information"
fails
to
clear
up
the problem,
or
if
difficulties
occur
after
your
Tester
has
been
in
use
for
some time. The
"Troubleshooting
Chart"
lists possible
difficulties
that
could raise along
with
several possible
solutions
to
those
difficulties.
Try
to
analyze
the
symptoms
of
any problem you
might
have before starting any troubleshooting procedure. This can
usually
be
accomplished
by
trying
the various functions
of
your
Tester
to
determine abnormal operations. A review
of
the
"Operation"
section may help.
GENERAL TROUBLESHOOTING
INFORMATION
NOTE: The
following
checks
will
be
most
effective
if
you
apply them
to
one
part
of
the
kit
at
a time.
1.
Recheck
the
wiring. Trace
each
lead in colored pencil
on the Pictorial
as
it
is
checked.
It
is
frequently
helpful
to
have a
friend
check
your
work.
Someone
who
is
not
familiar
with
the
unit
may
notice
something
you
have consistently overlooked.
2.
About
90%
of
the
kits
that
are
returned
for
repair
do
not
function
properly
due
to
poor
connections
and
soldering.
Therefore,
many
troubles
can
be
elimi-
nated
by
a
careful
inspection
of
connections
to
make
sure
they
are
soldered
as
described
in
the
"Kit
Builders
Guide."
Reheat
any
doubtful
connections.
Be
sure
all
wires
are
soldered
at
places
where
sev-
eral
wires
are
connected
.
3.
Check
each
circu
it
board
foil
to
be
su
re
there are no
solder bridges between adjacent connections. Remove
any solder bridges
by
holding
a clean soldering
iron
tip
between the
two
points
that
are bridged
until
the
excess
solder
flows
down
onto
the
tip
of
the
soldering
iron.
4.
Check
each
resistor value carefully. A resistor
that
is
discolored,
or
cracked.
or
shows
any
sign
of
bulging
would
indicate
that
it
is
faulty
and should
be
replaced.
5.
Be
sure
the
diode
is
installed
with
the banded end
positioned
correctly.
6.
Check all
component
leads connected
to
the
circuit
boards. Make sure
the
leads
do
not
extend through the
circuit
board and come in
contact
with
other
connections
or
parts.
7.
Check all wires
that
are connected
to
the
circuit
board
switches. Make sure the wires
do
not
touch the other
lugs. Make sure all wires are
properly
soldered.
NOTE:
In
an extreme
case
where you are unable
to
resolve a
difficulty,
refer
to
the
"Customer
Service"
information
inside the rear cover
of
the Manual.
Your
Warranty
is
located inside the
front
cover.
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