i changed the J8300 because there is short in all 5 capacitors C8300 and C7717/18/19/16
I Put Connector from A1466
but the short in the capacitors gone but the backlight problem not gone.
i made my measurements for Voltage on F7700 12 volt -- Q7706 (pin 3 LCDBKLT_EN_L11.7 volt -pin 4 12 v --pin 5,6 changed from 9.6 -7v-5-v-to 2-volt and also on D7701 the same . PPVOUT_S0_LCDBKLT 0volt---PP5VR3V3_SW_LCD_UF 5volt
on Q7706 pin 1234 0volt but pin 5 go down fom 9 to 2 volt also
on U7750
Pin 2 BKLT_SCL_R 4.7 volt ---- Pin 4 5volt---Pin 5 BKL_1_SDA 3.2 Volt---Pin 6 BKL1_SCL 3.2 volt---Pin 7 2.4 volt--Pin 8 0.4 volt Pin 11 5volt Pin 10 0 volt
on U7701
Pin 2 -0volt , pin 5 -5volt , pin 9 -12.6 volt , pin 11-11volt , pin15 -4.7 volt , pin 16 4,7 volt ,pin 18 - 5 volt , pin 17 - 0 volt.
all the measurements without screen
if the problem from q7706-- can i use one from A1466
I Put Connector from A1466
but the short in the capacitors gone but the backlight problem not gone.
i made my measurements for Voltage on F7700 12 volt -- Q7706 (pin 3 LCDBKLT_EN_L11.7 volt -pin 4 12 v --pin 5,6 changed from 9.6 -7v-5-v-to 2-volt and also on D7701 the same . PPVOUT_S0_LCDBKLT 0volt---PP5VR3V3_SW_LCD_UF 5volt
on Q7706 pin 1234 0volt but pin 5 go down fom 9 to 2 volt also
on U7750
Pin 2 BKLT_SCL_R 4.7 volt ---- Pin 4 5volt---Pin 5 BKL_1_SDA 3.2 Volt---Pin 6 BKL1_SCL 3.2 volt---Pin 7 2.4 volt--Pin 8 0.4 volt Pin 11 5volt Pin 10 0 volt
on U7701
Pin 2 -0volt , pin 5 -5volt , pin 9 -12.6 volt , pin 11-11volt , pin15 -4.7 volt , pin 16 4,7 volt ,pin 18 - 5 volt , pin 17 - 0 volt.
all the measurements without screen
if the problem from q7706-- can i use one from A1466
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