Skyworth LCD TV 49E510E play for a while before the image of the fault repair - android - Phones Developers

DFN1006 TP-RCLAMP3321P ESD Diode Low Capacitance

Brand model; Skyworth 49E510E motherboard number; 5800-A8S500-0P90 Maintenance at: 2016.11.09
Fault phenomenon; the startup Skyworth screen shows that after 3-4 seconds, the gray screen backlight is bright and there is sound, and it will take some time to see the image.
After unpacking the back cover habitually igniting a cigarette, booting straight to the logic board, the first test screen power supply 12V followed by 3-4 seconds without, the table hit the diode gear logic board to the ground resistance is normal! Viewing the motherboard screen power supply is supplied to the logic board by the P-channel 8-pin field tube STM9435 (U113). At that time, I did not want to directly replace it and turn it on; the fault is still sound. Ignite a cigarette, start measuring the P-channel 8-foot field tube STM9435 (U113) four feet are pulled down to 4 volts and then increase by more than 11V, P-channel 8-foot field tube STM9435 (U113) four feet normal value should be It is 4 o'clock! Because it is a lot of inconvenience for home repair, and there is no such model drawing in the mobile phone. Please see the screenshot for the operation method! Back to the store to download the movement of the motherboard board drawings, seriously thought that it is likely that the motherboard line leakage caused the Q123 base to rise above 0.7V, resulting in the Q1063 base is pulled down!
Attached to the movement drawings for everyone to download!
Skyworth 49e510 motherboard circuit diagram.pdf
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