FUNAI F42PDME Service Manual page 85

FLOW CHART NO.7
Horizontal defect
Is the following picture displayed?
Is the following picture displayed?
Check diode value P11 on Y DRV UPPER B/D unit
and P9 on Y DRV LOWER B/D unit.
Normal diode value. Defective diode value=0.018
(In case of Panasonic
IC=1.035)
*It is different from each IC Maker.
(In case of TI IC=0.6~0.7)
Replace Y SUS B/D unit.
No improvement can be found.
Replace LDVS CTRL B/D unit.
Yes
Screen off
No
Yes
Horizontal
bar
No
No
P11
Y DRV
UPPER
B/D unit
Yes
No
Yes
Check the connectors and connection between Y DRV
UPPER B/D unit (P12) and Y DRV LOWER B/D unit (P13).
Yes
No improvement can be found.
Check the connector and connection on Y DRV UPPER
B/D unit (P1~P4) and Y DRV LOWER B/D unit (P5~P8).
Replace Y DRV UPPER B/D unit or Y DRV LOWER
B/D unit.
Original Y SUS B/D unit
2-3-6
is poor.
PDMTR2