Haier 21F8A - Page 20

18
Horizontal bright line
Break R908 , let multimeter preset on R 1K and red meter rod grounding, let blac
k
meter rod tap pin 4 at N402.see if the bright line can wide at instant.
Check if R907 R448 are
rosin joint and the resisto
r
value of R448 changes
larger.
Check the
external circuit o
f
N201 and N201.
Normal
There is breakdown in the vertical outpu
t
grate.
Check if the connector o
f
the deflection yoke is
connected well,and C433is
rosin joint or cutoff, and the
external circuit of N402 an
d
N402.
Check 26V powe
r
circuit.
YES
NO
YES
NO
YES
NO
3.
Maintenance Service and Trouble shootin
g