Repair a Sony KLV-46R476A. It was not powered at first, but a board was sent and installed; The sound of the avatar during the power on test is normal, but there is a slight flicker on the screen, just like a concert flash. Occasionally, it returns to normal again, thinking that there is a problem with the light strip. After removing the light strip, the test does not flash normally, and the logic board and screen cable (connected to the screen) are also sent to replace them. It can be confirmed that the flicker is caused by the screen.
The logic board to the edge board is a double row cable,
Take off the right cable and turn on the left half screen. There is no avatar on the white light,
Take off the left cable and turn on the power. The right half screen has an avatar flashing,
Try using the isolation method previously used.
Remove the right screen cable, cut several millimeters of transparent tape and stick it on the metal sheet of the right screen cable section by section for testing,
When trying to stick the 4th to 12th line (counting from right to left), the avatar no longer flickered normally, and it was a great success. Another isolation method successfully repaired the screen.
Guangzhou weicai electronic technology Co., Ltd.
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