Sony KE-42MR1 / KE-42MR1E / KE-MR42M1 Service Manual ▷ View online
7
Lighting strip
PDP Malfunction Phenomenon
Check our specification .
Screen Defect
Black strip
Check our specification .
8
Alarm
Protection
Panel Alarm
FPC Opened
No Picture
Panel alarm line go through the edge
of the FPC.
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.
of panel.
This case is caused by sulfur issue.
Next parts will be broken, Scan
Board, Common Board, High Voltage
Board, Scan Relay Board.
Board, Common Board, High Voltage
Board, Scan Relay Board.
CHECK POINT
FPC cutting at scan side and TCP
side.
FPC cutting at scan side and TCP
side.
CHECK POINT
Panel Grid condition.
Panel Grid condition.
CHECK POINT
Fuse on boards, Power HIC,
Between NEGA and POSI on scan
relay board
Fuse on boards, Power HIC,
Between NEGA and POSI on scan
relay board
REWORK
Change the Scan, Common
board and Scan relay board.
Change the Scan, Common
board and Scan relay board.
REWORK
We can not rework this.
We can not rework this.
REWORK
We can not rework this.
We can not rework this.
9
Alarm
Protection
No Picture
In case of shortage between Vd line
and GND in TCP, Vd protection will
be worked.
and GND in TCP, Vd protection will
be worked.
Vd Protection
5V Protection
TCP Broken
Data Relay Board Broken
Digital Board Broken
CHECK POINT
Shortage between Vd line and GND,
TCP surface
Shortage between Vd line and GND,
TCP surface
In case of shortage between Vd line
and GND in data relay board, Vd
protection will be worked.
and GND in data relay board, Vd
protection will be worked.
CHECK POINT
Shortage between Vd line and GND
on data relay board.
Shortage between Vd line and GND
on data relay board.
In case of no supply from supply
board, 5V protection will be worked.
board, 5V protection will be worked.
CHECK POINT
Fuse on digital board
Fuse on digital board
REWORK
We can not rework this.
We can not rework this.
REWORK
Change the data relay board.
Change the data relay board.
REWORK
Change the digital board.
Change the digital board.
10
No Priming
No Signal
High Voltage Circuit Broken
No Picture
Digital Board Broken
Digital is not working.
CHECK POINT
Fuse on board, Vp, Vbw and Vsw
line of Power HIC.
Fuse on board, Vp, Vbw and Vsw
line of Power HIC.
CHECK POINT
fuse on digital board, LVDS cable
fuse on digital board, LVDS cable
Next parts will be broken, Vp or Vbw
line on Scan Board, Vsw line on
Common Board, (High Voltage
Board).
line on Scan Board, Vsw line on
Common Board, (High Voltage
Board).
REWORK
Change the scan or common
board (High voltage board).
Change the scan or common
board (High voltage board).
REWORK
Change the digital board.
Change the digital board.
Vacuum Tube Cracking
With big noise.
CHECK POINT
Vacuum tube
Vacuum tube
REWORK
We can not rework this.
We can not rework this.
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