Haier HS-2190 Service Manual page 36

Raster without picture and sound
no
Inspect whether the item RAGC in
D-MODE is set to be 00
yes
Using special
controlor to enter S-MODE
or D-MODE
RAGC to be 20
Absent base color such as red
Normal
Replace or reweld
V622
Raster without picture and sound
Snow noise on the screen ?
remoter Inspect circuit of
PIF
,setting V231,V212
N201 etc.
Absent red color
Inspect whether V622 is open or virtual welding
Normal
Inspect V621 R621
Inspect the voltage on the pins of the tuner
Normal
no
Inspect
and
antenna or
replace the
tuner
Abnormal
Inspect the voltage on the pins of XS602
Inspect
N201(pin18) to XS261(pin3)
Available
Abnormal
Inspect the
circuit from
N201 to the
tuner
Abnormal
the circuit from
36