Symptom: sound normal, the image , but the image is not normal gray , the image bright part of the normal scene , some were negative image of dark scene . Hair , eyebrows, dark green , menus and character normal.n7zservice manual download site
Analysis and Maintenance : This symptom is gray not normal , abnormal images belong . For images of abnormal fault , there may be bad motherboard, or it may be bad logic board , LVDS cable may be bad . Clean LVDS cable , the fault persists.n7zservice manual download site
Next, to distinguish between a bad motherboard or logic board . Adverse Both boards will have this symptom . The distinction is commonly used menus and character to distinguish , if the menu or characters normal , indicating that the logic board is good. Fault on the motherboard . If the menu and character have the same symptoms , indicating a fault in the motherboard. The fault TV , character and menu normal. In fact , high -contrast menus and character , slight gray is not normal, and the characters on the menu does not appear obvious . Therefore, the failure to determine the use of menus and character fault location is not very effective .n7zservice manual download site
In fact , the symptom is Y correction circuit logic board due to the poor . The machine uses a TW odd screen, the same model to replace a logic board , put the boot OK.n7zservice manual download site