Astar ltv-1701 Manuale Istruttivo

Pagina di 26
Before calling for service, have you checked (       ) the following chart on symptoms and solutions.
No picture, no sound
Poor sound, picture OK
Poor picture, sound OK
Weak picture
Blurred picture
Double image 
Lines in picture
Distorted picture
Weak reception on some channels
Horizontal bars
Picture rolls vertically
Poor colour
No colour
Misoperation of Remote control
No Remote control
On Screen Display Control outside the screen
T
ry
 d
iff
e
re
n
ch
a
n
n
e
l, 
if 
O
K
p
ro
b
a
b
ly
 s
ta
tio
n
 t
ro
u
b
le
C
h
e
ck
 a
e
ri
a
l c
o
n
n
e
ct
io
n
o
n
 b
a
ck
 o
se
t
C
h
e
ck
 a
e
ri
a
l f
o
b
ro
ke
n
 w
ir
e
s
R
e
-o
ri
e
n
a
e
ri
a
l (
if 
in
d
o
o
ty
p
e
)
P
ro
b
a
b
ly
 lo
ca
l i
n
te
rf
e
re
n
ce
su
ch
 a
a
n
 a
p
p
lia
n
ce
A
d
ju
st
 f
in
e
 t
u
n
in
g
 c
o
n
tr
o
l
A
d
ju
st
 b
ri
g
h
tn
e
ss
 c
o
n
tr
o
l
A
d
ju
st
 c
o
n
tr
a
st
 c
o
n
tr
o
l
C
h
e
ck
 if
 s
ta
tio
n
 is
 b
ro
a
d
ca
st
in
g
 c
o
lo
u
r
A
d
ju
st
 c
o
lo
u
co
n
tr
o
l
C
h
e
ck
 if
 s
ys
te
m
 s
w
itc
h
 is
 c
o
rr
e
ct
C
h
e
ck
 if
 o
n
/o
ff
 s
w
itc
h
 is
 "
o
n
"
C
h
e
ck
 B
a
tt
e
ri
e
in
 R
e
m
o
te
 c
o
n
tr
o
l
S
o
lu
ti
o
n
Symptoms
-25-
PART II
Incorporated in your TV receiver are the most up-to-date devices to eliminate interference. Local radiation however, 
can create disturbances which visibly affect your picture. Proper installation and a good aerial are your best safe-
guards against these disturbances.
Nearby cars and electrical motors can cause small streaks across the picture or make the picture roll.
Herringbone pattern and partial picture loss can result from the operation of diathermy equipment from a nearby 
doctor's surgery or hospital.
Moving ripples across the screen are caused by nearby transmitting or receiving-short-wave radio equipment.
Weak TV signals from long distant stations result in an instead picture and give the effect of falling snow. Anaerial 
adjustment or antenna amplifier may be needed.
Multiple image caused by TV signals reflected back from surrounding buildings, hills, aircraft, etc. is minimized by 
correct aerial positioning.
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