The PDP self-test method summarizes the Samsung V2 screen and shorts the CN802(3)(4) pin on the power board. The SW2001 on the logic board is set to (1)(3), (2)(4); after the self-test Return to normal working mode (1, 2, 4, 3)
Disconnect the motherboard using the connection cable
The power board is repaired separately: short the CN802(3)(4) pin on the power board, short the VS-ON and D5V, and connect the 100W bulb as a dummy load on the VS to detect the output voltage of each group on the power board.
The Samsung V3 screen shorts the JP8005 on the power supply board or shorts the CN9004(3)(4) pin;
Set the SW8001 toggle switch on the logic board to (1)(3), (2)(4); return to normal operation mode after self-test (1, 2, 4, 3)
Disconnect the cable on the motherboard
The power board is separately repaired: short the CN9004(3)(4) pin on the power board or short the JP8005; short the VS-0N and D5V or short the JP8002.
The Samsung V4 screen shorts the CN8007(3)(4) pin on the power board or shorts the Realay to the ground;
Short-circuit the CN2034 on the logic board and disconnect the motherboard.
The power board is repaired separately: short the Realay board on the power board or short the CN8007(3)(4) pin, and short the VS-ON and D5V.
The Samsung V5 screen shorts the (3) (4) pins of the power supply board CN8003 (from the bottom up)
Short the CN2001(3)(4) pin on the logic board (short-circuit left and right)
Disconnect the motherboard using the connection cable
Power board separate maintenance method: short the PS-ON on the power board to the ground; short the VS-ON and D5V
Samsung S50-HW-YD01 screen (used by PT5016 machine)
Short the CN8002(3)(4) pin on the power board (PS-ON is shorted to ground)
Short-circuit the CN2012 on the logic board and disconnect the motherboard using the connection cable.
The power board is separately repaired: short-circuit the PS-ON on the power board to the ground; short-circuit the VS-ON and D5V
Samsung S50HW-YD02 screen shorts the (8) (9) pin of CN8003 on the power supply board; (PS-ON is shorted to ground)
Short-circuit the CN2007(3)(4) pin on the logic board; (VS-ON is shorted to D5V)
Disconnect the connecting cable on the motherboard
Power board separate maintenance method: short PS-ON to ground; short circuit VS-ON and D5V
Samsung S50HW-XD02 screen disconnects the motherboard to the logic board. Set the toggle switch on the logic board to (1)(4)(5); (2)(4)(6);ã€Normal state For (2)(4), (1)(3)(5)(6)
Self-test can be realized by powering on twice
The power board works separately: short the VS-ON to the ground and short the PS-ON to the D5V
Samsung S50HW-XD03 screen disconnects the motherboard to the logic board. Set the toggle switch on the logic board to (1)(2)(3)(4)(5); (6)下ã€Normal state: (1) (3) above; (2) (4) (5) (6)
The self-test can be realized by powering on the second time.
Power board separate maintenance method: short the VS-ON on the power board to the ground; short the PS-ON and D5V
Samsung S42AX-YD01 screen shorts the CN8007's (3) (4) on the power supply board, short the CN2072 on the logic board to disconnect the existing cable on the motherboard. If the screen and screen components are on the normal screen, Self-test screen showing white field
The power board is separately repaired: short the CN8007(3)(4) pin on the power board (ie PS-ON is shorted to ground); short the VS-ON and D5V.
Samsung S42AX-YD02 screen shorts the CN8007(3)(4) pin on the power board and shorts the CN2072(3)(4) pin on the logic board to disconnect all the connecting cables on the motherboard.
The power board is separately repaired: short the CN8007(3)(4) pin on the power board (ie PS-ON is shorted to ground); short the VS-ON and D5V
11. Samsung S42AX-YD03 screen shorts the PS-ON on the power supply board to the ground. Short-circuit the CN2013 socket on the logic board in the horizontal direction to disconnect all the connection cables of the motherboard.
Separate maintenance method for the power board: short the PS-ON on the power board to the ground; disconnect the VS-ON from the D5V
12. Samsung S42AX-YD05 screen shorts the CN8003(3)(4) pin on the power board [ie PS-ON and ground short]
Short the CN2007(3)(4) pin on the logic board (short in horizontal direction)
After disconnecting all the connection cables on the motherboard, the screen self-test screen will appear, and nine screen savers will be displayed.
Power board separate maintenance method: short the CN8003 (3) (4) pin on the power board, short the VS-ON and D5V
Thirteen, Samsung S42AX-YD09 screen
(1) Disconnect the mains cable.
Short the (2) pin (PS-ON) and (3) pin (GND) of CN801 on the power supply board.
Short the CN2007(3)(4) pin on the logic board.
Separate maintenance method of the power board: short the (1) (3) pin (PS-ON and ground) of CN801 on the power supply board, VS-ON and 5.3V
14. Samsung S42AX-YD11 screen shorts the (1) (4) pin of CN801 on the power supply board. The socket next to the F2000 on the logic board (the socket has no bit number) (3) (4) is shorted to the motherboard. All the cables are disconnected. After power-on, the screen displays a self-test screen.
Power board separate maintenance method: short-circuit PS-ON on the power board to ground; VS-ON is shorted to 5.3V
Fifteen, Samsung S42AX-YD13 screen will short the (1) (5) pin of CN801 on the power supply board;
Short-circuit the (3) (4) pin of CN2007 of the logic board to disconnect all the connecting cables on the main board. After power-on, the screen will display a self-test screen.
Power board separate maintenance method: short PS-ON to ground; short circuit VS-ON and D5.3V
Sixteen, LG-V7 screen (LG-V7 screen uses two kinds of power boards, the method is basically the same, but the position of the power board SW601 is different.)
Short the AUTO end of SW601 on the SUB module on the power supply board to the two pins in the middle. If SW601 is the toggle switch on the power supply board, turn SW601 to the end of AUTO to disconnect the cable used on the main board. R407 is removed from the logic board (disconnect R407)
After the power is turned on, the screen will display a self-test screen.
The power board is separately repaired: (1) short the AUTO end of the socket SW601 on the SUB module of the power supply board to the 2 pins in the middle; or turn the SW601 with the toggle switch to the end of the AUTO (2) Connect 5VCTRL to ground at the output 5VCTRL and ground (3) Connect the 1001W bulb to the VS load to check if all the output voltage of the power board is normal.
Seventeen, 32-inch LG screen (PDP32F10000, PDP32F1T374, PDP32F1X374, PDP32F1T031, PDP32F1X031, PDP32G1T001)
Disconnect all the connecting cables on the main board and turn off the two small holes next to R117 and R118 on the logic board. The self-test screen will appear on the screen (color card signal 0)
Power board separate maintenance method: disconnect all the connection cables at the output end of the power board, pass 220V AC, check whether all output voltages are normal.
Eighteen, Panasonic screen Panasonic screen can not achieve the screen self-test, can not be like Samsung, LG screen through the self-test way to determine whether the fault is caused by the motherboard, or the screen component or the screen itself caused by the failure. The self-test of the Panasonic screen only uses the dedicated remote control and receiving head of Panasonic Corporation. The fault range is judged according to the number of flashes of the indicator light. Because the SS board needs to feed back the STB-PS signal on the Panasonic screen, all the SS boards cannot be disconnected. judgment.
Panasonic screen power board separate maintenance method and method to protect the circuit:
Panasonic M7 screen:
Separate maintenance method of the power board: terminate the (4) (5) pin of P12 on the power board; short the (2) (4) pin of P27 on the power board; connect the 100W bulb to the VS output.
Disconnect the protection circuit method: (1) Y board - disconnect the S0S1 (11) on the SC20 socket (Y board) and the (12) foot of the S0S2 (2) Z board - the (9) pin on the SS23 socket Disconnected, this pin is protected when it is high.
(2) Panasonic M8 screen:
The power board is separately repaired: short the (4) (5) pins of the P12 on the power supply board; short the (17) (10) pins of the P25 on the power supply board, and connect the 100w bulbs to the VS output terminals.
Disconnect the protection circuit: (1) Y board - disconnect the (11) (12) foot of the SC20 on the Y board (2) Z board - disconnect the (9) foot of the SC23 on the Z board, high Level protection.
(3) Panasonic S9 screen:
The power board is separately repaired: short the (17) and (10) pins of P15 on the power supply board; short the (10) pin of P12 on the power supply board to ground, and the 100W light bulb is connected to the VS output terminal.
Disconnect protection: (1) Y board - disconnect the (11) (12) foot of the SC20 on the Y board (2) Z board - disconnect the (8) foot of the SC23 on the Z board ( 3) Protection board of the power board, test pin P25 (16), high level protection
Separate maintenance method for Panasonic H10 screen power supply board: short the (9) and (11) pins of P25 of the power supply board
Disconnect the protection circuit method: (1) Y board - disconnect the (15) (16) foot of the SC20 on the Y board (2) Z board - disconnect the (8) foot of the SS23 on the Z board
Panasonic 50H10 screen
The method of disconnecting the protection circuit: the socket of the Y board is a flexible cable, and the cable on the socket cannot be disconnected, and only the corresponding component is disconnected. Y board - disconnect the SC20 (15) pin corresponding components are D480, D862, you need to disconnect these two components at the same time; (16) the corresponding components are D585, D499. High level protection, normal work should be Low level.
LG42G1T245 self-test method: short the RL-on of the power board socket P8813 and the 5V pin; short the two test holes next to R211 and R241 on the logic board. PDP42G1T001 self-test method: disconnect the power board from the motherboard cable, short the two test holes next to R211 and R241 on the logic board, and connect to 220 AC.
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