Samsung TXJ2766 Service Manual - Page 23

No Vert Scan Horizontal Line

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4-3 No Vert Scan (Horizontal Line) Troubleshooting Power OFF (after 10 ~ 15 seconds) In the Factory Mode, select " V-sync Not Used" (See " Option Byte Table 3-2") Normal Normal Check/Replace IC301 Check IC301 Pin 2 , 4 Abnormal Check IC201 Pin 46 , 47 Abnormal Check/Replace IC201 Check D812 (D811) Abnormal Check T444 Pin 6 , 8 , R410, R409 Abnormal Check/Replace FBT Samsung Electronics 4-3

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Troubleshooting
Samsung Electronics
4-3
4-3 No Vert Scan (Horizontal Line)
Check D812 (D811)
In the Factory Mode, select
" V-sync Not Used"
(See " Option Byte Table 3-2")
Abnormal
Power OFF
(after 10 ~ 15 seconds)
Normal
Check IC301
Pin
,
2
4
Normal
Check/Replace
IC301
Check/Replace
IC201
Check T444
Pin
,
,
R410, R409
6
8
Check/Replace
FBT
Abnormal
Check IC201
Pin
,
46
47
Abnormal
Abnormal