KE-50XBR900 - Sony TV Service Manual (repair manual). Page 10

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8
Alarm
Protection
Panel Alarm
FPC Opened
No Picture
Panel alarm line go through the edge 
of the FPC.
Vs Protection
Panel Grid Opened
High Voltage Circuit Broken
Panel alarm line go through the edge 
of panel.
This case is caused by sulfur issue.
Next parts will be broken, Scan 
Board, Common Board, High Voltage 
Board, Scan Relay Board.
CHECK POINT
FPC cutting at scan side and TCP 
side.
CHECK POINT
Panel Grid condition.
CHECK POINT
Fuse on boards, Power HIC, 
Between NEGA and POSI on scan 
relay board
REWORK
Change the Scan, Common 
board and Scan relay board.
REWORK
We can not rework this.
REWORK
We can not rework this.
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